Premier Spherical Brochure, 2007 by NTN Bearing Corporation of America

Premier spherical roller bearings: our vast experience

Industry

All you need to know about SNR Premier spherical roller bearings

Summary Premier: more than a product range a leading manufacturer's philosophy

2-3

Performance and sizes available

4-5

Materials and treatments

6-7

Design, tests and manufacturing means

8-9

Cages

10-13

Lubrication

14-15

Speeds

16-17

Technical information: fundamentals

18-21

Designations, suffixes

Range

23-27

Sleeves

28-33

Maintenance - Installation - Removal

- Lubrication

- Monitoring, Services

36-37

Premier: more than a product range a leading manufacturer's philosophy

Optimize each product to achieve the greatest performance possible, without increasing prices: this is our manufacturing philosophy. This approach is especially obvious with the Premier line. It consists of providing the highest level of reliability as a standard. This high product quality is supported by our experienced staff, in order to propose the most efficient solutions for your productivity. The SNR spherical roller bearings are the first to benefit by the Premier approach.

Bearings designed to bear the unbearable Spherical roller bearings are dedicated to extremely severe applications, such as heavy industries like iron & steel, paper mills, quarriesâ&#x20AC;Ś etc. They support high loads, severe misalignment, contaminated environments, shocks, and vibrations. These conditions demand exceptional mechanical qualities.

Highly significant improvements During the last few years, the SNR engineers and researchers have dedicated themselves to material selection, product design, bearing kinematics, manufacturing processesâ&#x20AC;Ś leading to an outstanding result. As first beneficiaries of the Premier technology, the SNR spherical roller bearings demonstrate an 18 % load capacity increase and a service life extension of at least 75 %.

SNR proposes more reliable, higher performance bearings with unrivalled quality/price ratio.

A product range as exemplary as its performance ratings

The SNR Premier spherical roller bearings have improved in all respects: - Reduced friction torque, as much as 30% less,

- Increased load capacity, extended service life, thanks to:

offering lower operating temperature, with lower

• very high quality steels, almost free of imperfec-

power and lubricant consumption.

tions.

- Appreciably increased operating speed, allowing

• optimized rolling element complement, of maxi-

an extended scope of applications.

mized profile and quantity. Therefore, their

- High temperature capacity up to 200°C (392°F)

actual service life, as well as dynamic and static

for metallic cage bearings. Dimensional stability is

load capacities are appreciably higher, for the

ensured by a specific heat treatment.

same envelope dimensions, resulting in:

- +/- 0.5° mis-alignment capability, without reducing

• higher reliability of the machines and facilities.

the load capacity, and up to 1°30’ in case of low

• use of smaller bearings in new design studies,

loads.

permitting smaller machines and reduced total costs of the facilities.

Optimization of the SNR Premier spherical roller bearings L10 (life duration)

COMPETITION In optimal operating conditions, the life can be extended by 10, 15, 20 fold

+18%

+75%

load capacity.

minimum service life extension.

Diversified conditions, tailor-made solutions A spherical roller bearing is not subjected to the

SNR proposes small dimension bearings for high-

same stresses depending on its intended application.

speed applications: series 23000 and larger section

The SNR range breaks down into 9 series, each

bearings such as series 22300, particularly suitable

dedicated to specific conditions.

for high loads.

These bearings are also available with reduced and increased internal clearances (C2, C3 and C4), with cylindrical and taper bore (K), glass fiber â&#x20AC;&#x201C; filled polyamide cage (G15), steel cage (A) and solid brass cage (M), with lubrication groove (W33). The series EF800 were created to meet the particularly severe requirements of vibratory mechanisms.

From casting to surface treatment: total steel control

Cast quality, alloy purity To sustain extreme stress loads, spherical roller bearings require a steel quality beyond reproach. Two main considerations: strictly observed casting process and inclusion cleanliness. The SNR steel suppliers are selected worldwide, in line with these two criteria. The corporate agreements implemented with them guarantees reliable availability and perfect traceability. While continuously improving measurement accuracy, SNR has maintained the same test principles for thirty-five years! These constant principles are valuable, having allowed us to assess and control the evolution of the steels for several decades.

Service life is almost doubled Some 15 years ago, the best steelworks in the world used to reach a minimum performance criterion of 250 hours for 100 Cr6 steel in SNR's severe Service life of the steels used by SNR

testing conditions. The cooperative work with our

1 000 900

in hours

800

suppliers allowed us to achieve the new steel

700 600 500

300 200 100

quality, raising the performance criteria to more

Since 1993: 450 hours

400

x 1,75

Before 1993: 250 hours

than 450 hours: below this threshold, SNR refuses

Before 1991: 100 hours

any steel production.

0 88

Average service life SNR's acceptance limit

Years

With both rings manufactured from this new quality steel, an a2 coefficient equal to 1.75 could be

Corrected nominal service life (Lna)

integrated in the corrected service life calculation.

Lna = a1.a2.a3.L10 a1 = a2 =

This is the minimum guaranteed value. In fact, this

correction coefficient for a different reliability from 90%.

rate is regularly exceeded: the average of the steel

correction coefficient according to material used,

batches used would allow a factor 3 or 4 to be

internal geometry and bearing manufacture. a3 =

applied by adopting this minimum value.

correction coefficient according to operating conditions (considered equal to 1 in normal

SNR focuses on safety, for all types of applica-

operating conditions). L10 = basic nominal life.

tions.

Test protocol SNR systematically qualifies each supplier's perfor-

Axial load

mance, and each steel's quality, through test ben-

Test specimens

ches referred to as "FB2". In fact, we test the intrinsic performance of the material in bearing applications, totally irrespective of all parameters which could be attributed to bearing geometry. The test consists of trying a large number of samples under high loads and at 1,500 rpm, and deducing the service life (L10) reached by 90% of the samples.

Test specimens

Speed 1,500 rpm

Heat treatment: protecting against wear The specific spherical roller bearings heat treatment

Dimensional stability up to 200째C

guarantees dimensional stability, even at very

Expansion results from the transformation of residual austenite when present in large quantities.

high temperature. It provides the bearing with its intended operating properties: resistance to failure

There is virtually no expansion because there is very little residual austenite.

and wear, reliability. The tempering treatment after quenching provides a martensitic structure, with

2,000 hours

suitable durability, allowing our bearings to withs-

Standard heat treatment Specific SNR heat treatment

tand extreme operating conditions.

Life

Shrinkage due to the development of the martensitic matrix.

Dimensional variation when the bearings are used at high temperature.

Cage surface treatment: optimized lubrication In the SNR Premier bearings, the steel cages are

making it porous, so that it acts as an oil pump. This

protected from corrosion by a phosphate treatment

guarantees a lubricant film at cage contact with

which changes the superficial steel structure,

rollers and inner race, thereby limiting friction wear.

Design, geometry: 3D efficiency

__ New SNR Premier design. --- Former design.

Larger diameter rollers, thanks to a corresponding reduction of the ring thickness, allowed by the improvements in the steel and the heat treatment and machining technologies.

Simple design, high performance, high reliability bearings

Longer rollers, thanks to the removal of the shoulder sections whose guidance function was assumed by the bearing races and the geometry of the cage.

The SNR Premier spherical rollers are guided by a minimum number of components; rollers are only guided by the tabs in the cage pockets (*). This reduced number of components is a key factor, facilitating parameter control (thermal expansion, tolerancesâ&#x20AC;Ś). Also, shoulders have been eleminated, reducing friction; precision is improved, and load capacity optimized. Very large bearing surface for the rollers.

Maximum load capacity, robust rollers

Optimized load distribution.

Optimized bearing races, ensuring: - A larger bearing surface for the roller on the race,

In addition to the quality of the steel, a bearing's

thanks to the elimination of lateral and central

load capacity essentially depends on the number

shoulders.

and size of the rolling elements.

- Better load distribution, by optimized relative

The SNR Premier spherical roller bearings feature

curvatures, in order to obtain a homogenous

larger rollers, and in larger quantity. The redesigned

distribution of the loads along the roller width.

races also ensure better load distribution.

- Improved roller / race contact thanks to a better (*) when design permits.

control of the shapes and surface conditions, resulting from the use of new inspection and machining methods.

Tests and calculations: state-of-the-art means for an ideal solution

Cage geometry optimization by finite element analysis

In a bearing, all parameters interact and must be

of test hours on endurance benches and series-

considered at the same time: geometry, lubrication,

production qualification tests.

friction, to obtain the best compromise. In this

Our analysis programs simultaneously integrate all

research work, SNR implements two types of tools:

parameters: kinematics, lubricant viscosity, geometry,

tests, and analysis software, benefiting from many

loads. They provide access to more than 1,000 pos-

years of experience.

sible solutions for a bearing of the same standard

In fact, suppressed shoulder sections, roller guidance

dimensional envelope (ISO), allowing us to propose

by the race and cage were validated by thousands

optimum solutions according to the type of cage used.

Manufacturing facilities & methods to match the goals of the Premier range. Our engineers are not only seeking the best

quality drift in the course of time: these principles

product: they also look for the best methods in

enabled SNR to attain the highest levels in the

order to guarantee the bearing quality in large

aerospace and automotive sectors. They are in

quantity production.

effect in the Premier range.

For example, SNR commits itself to ensure equivalent precision and tolerance homogeneity both

Thanks to a production quality assurance

on solid, steel sheet or cast cages.

system and a continuous improvement effort

The manufacturing and inspection process layouts

on machines and processes, the Premier

were approved as accurate specifications.

bearing finishing level is achieving unrivalled

Combining quality and productivity, excluding any

regularity.

Cages: the bearing's back-bone Cage failure results in bearing failure and consequently, machine failure. Failure prevention and adaptation to all applications are obtained by optimizing the various types of cages, available in diversified materials: polyamide, steel sheet, brass.

SNR PREMIER EG15 SERIES

Average temperature applications Polyamide 6.6 nylon cage, filled with 25 % glass fiber This bearing is designed for all general applications when temperature does not exceed 150°C. - Very good strength thanks to the material, providing flexibility and elasticity, as well as dual design: each row of rollers is guided by its own cage. - Very good roller guidance thanks to its « window style » design, obtained from a specific cast pro-

Contoured profile for a close guidance of rolling elements

cess, guaranteeing high reliability. - Good lubrication, improved by the cage design: apertures in the external shroud, low polyamide / steel friction coefficient. This cage ensures good distribution of the lubrication film. - Low noise level, thanks to the material used.

Lubrication apertures

- Good corrosion resistance: no alteration of the cage in case of accidental presence of water. Non-conductive and resistant to many chemical or electrochemical agents.

Added lubricant

SNR PREMIER EA SERIES

General and extreme temperature applications Steel sheet cage This bearing is designed for all general applications and more particularly when the operating temperature exceeds 150째C. - Resistance to high and low temperatures: from -60 to +200째C, thanks to the bearing ring dimensional stabilization heat treatment, complemented by a suitable lubricant. - Accurate cage centering, on the ground surface of the inner ring's bearing race and on the large rolling elements, resulting in more precise roller guidance. - Precise guidance of the rollers, retained by the pockets, each comprising 4 retaining tabs with a controlled chamfer, for perfect positioning of the rolling elements without added components. This

4 tangs per cage pocket to guide and retain rolling elements

guarantees minimized friction and overheating, for an increased service life, with reduced maintenance. Peening of edge of pressed steel

- The surface treatment (phosphatizing - oiling) reduces the friction coefficient and the wear, for Added lubricant

higher resistance at high speed. - Excellent lubrication due to the shape of the cage which increases the lubricant reserves in the bearing and facilitates its flow.

The series 24000 is a very wide series, with extra-long rollers ensuring optimized capacity. Therefore, SNR decided to maintain the lateral shoulders and the central rib.

Cages: the bearing's back-bone

SNR PREMIER EM SERIES

Demanding applications Solid copper alloy cage (brass) This bearing provides a solution for temperatures up to 200Â°C, with tough operating conditions (high speeds, shock loads, contamination). - Minimized resonance, due to the one-piece cage. - Resistance to shocks and highest rigidity due to the plastic deformation capacity of the material

- Perfect roller radial guidance and good roller / cage load distribution, by the pockets surrounding the rolling elements.

(copper alloy â&#x20AC;&#x201C; brass) - Friction reduction, due to: - the self-lubricating properties of the cage material, reducing friction at high speed. - The cage centered on the rolling elements, with lateral shoulder sections on the inner ring. The absence of a cage / ring contact prevents any

Pocket contoured to fit the rollers

component from siezing in case of thermal expansion.

S N R P R E M I E R EF800 S E R I E S

High vibration applications Solid copper alloy cage (brass), reduced internal tolerance & clearance ranges The vibratory mechanisms such as those found in shaker screens, crushers, grinders or construction equipment engines, are the most demanding applications for spherical roller bearings. - Resistance to vibrations, by the solid one-piece machined cage, which minimizes resonance

Tolerances

Machined solid cage

phenomena, and their induced failures.

Clearance

thanks to the lateral shoulders in the inner ring and

ISO

EF800

- Strengthened roller retention under vibrations, to the internal clearance control at installation. To ensure correct operation in vibration applications, the tolerances on the outer diameter, the bore and

the internal clearance are reduced. - Special radial play: C4, utilizing the upper 2/3 of

internal clearance after installation. This type of spe-

the tolerance range, in order to perfectly control the

cial tolerance is also available in classes C0 and C3.

Cage selection guidelines Series Selection criteria

Applications

Cage materials

EA series

EM series

EF800 series

EG15 series

General

Difficult

Vibrating

General

Copper alloys

Steel, Surface treatment

Polyamide 6.6 (reinforced with 25% glass fibers) Up to 120°C (250°F) continuous and 150°C (302°F) transient peak

Operating temperatures

Up to 200°C (392°F)

Resistance to impacts and vibrations

***

*****

****

Resistance to friction

***

****

*****

Resistance to heating

*****

***

*** **** *****

: average : good : excellent

Suitable lubrication: critical for long service Lubrication is an essential element for correct operation of the bearing. In fact, 70% of premature failures are due to faulty lubrication. Viscosity is key, as well as lubricant distribution between the components, due to geometry and surface conditions. This point was particularly optimized in spherical roller bearings.

- Suppressed shoulders to offer a sufficient volume to correctly lubricate the bearing and ensure that the lubricant flow maintains a permanent grease film between rollers and races,

- Cage design and material: • Steel sheet cage, with phosphate treatment to ensure lubricant retention. • Solid brass cage, whose self-lubricating properties

thereby significantly reducing overheating.

reduce high speed friction. - Lubrication grooves

• Glass fiber - filled polyamide cage, with apertures

and holes:

in the outer shroud to facilitate lubrication.

enlarged lubrication

Lubrication is also improved by the polyamide-

grooves and increased

steel contact at the rollers, and by the material

diameter for the 3

featuring high resistance to inadequate lubrication.

lubrication holes located in the outer ring, to facilitate relubrication.

Lubrication tips It is critical to obtain satisfactory lubrication as early as the first rotation of the bearing. In case of lubrication by grease, ensure that the grease fully packs the available volume and, in particular the space between cage and inner ring. For more information on lubrication tips and SNR products, refer to page 35.

SNR LubSolid: life lubrication Spherical bearings with two rows of rollers, by their internal design expel grease from the rolling element / race contact points, are the types of bearings which consume the highest quantity of grease. Even sealed, they do not permit life lubrication. Therefore, for a speed factor N.Dm = 100 000, SNR proposes a new lubrication concept called LubSolid. LubSolid is a porous polymer material containing a large quantity of oil. This matrix completely fills the free volume in the bearing providing 3 to 4 times more oil than with a conventional grease.

Spectacular performance

LubSolid's advantages:

in the following applications:

- Extended service life. The core of the bearing is

- Bearings submitted to low amplitude oscillations where the risk of false Brinelling is high. With SNR LubSolid, the performance rating can be multiplied by 20, versus the best available

permanently supplied with oil. - No relubrication required. - Environmentally friendly. - Better sealing: protection in case of dust aggres-

grease. - Bearings submitted to strong centrifugal effect (4000gâ&#x20AC;&#x2122;s). The grease is instantaneously expelled

sion (this can be improved by adding grease in the bearing body).

from the bearing, whereas the LubSolid material allows thousands of operating hours. The bearings with LubSolid also meet the particular requirements of vacuum applications, in which the lubricant is even more severely altered (oil evapora-

SNR remains at your disposal to study the

tion), and of agri-food where health hazards are high.

use of this concept in your applications.

400

100

With LubSolid

Without LubSolid

Oil quantity contained in a bearing with LubSolid.

Oil quantity contained in a greased bearing.

100

Speed: better knowledge to select the most appropriate bearing

Thermal reference speed nθr (ISO 15312 standard) The thermal reference speed is the inner ring rota-

- Lubrication method:

ting speed for which thermal equilibrium is reached,

oil bath, with oil level up to, the center of the rolling

between heat produced by friction in the bearing

element at its lowest position.

and thermal flow emitted through the bearing seat (shaft and bearing housing), in reference conditions. Reference conditions determining heat generation by friction: - Bearing reference temperature on fixed outer ring θr: 70°C. - Bearing reference ambient temperature θAr: 20°C. - Reference load P1r = 0,05 x C0r (5% of the basic

- Bearing size range: up to and including a bore diameter of 1,000 mm. - Internal clearance: group « N ». - Bearing rotation axis: horizontal. - Fixed outer ring. The reference conditions for grease lubrication are determined so that the thermal reference speed is identical to oil bath lubrication reference speed.

static load, taken as pure radial load). - Lubricant: mineral oil without extreme pressure additives, featuring, at θr = 70°C, a kinematic viscosity νr = 12 mm2 /s (ISO VG 32).

Limit speed The admissible limit speed depends on mechanical

If you wish to exceed the admissible limit speed

limitations such as the ultimate failure strength of

indicated in the table (page 23-27), consult your

the bearing components.

SNR contact.

fp: Dimension-based coefficient, linked with actual applied load P/C = 0,05

1 0,9

P/C = 0,1

0,8

Admissible operating thermal speed

0,7

P/C = 0,2

0,6 P/C =0,3

0,5

P/C =0,4

0,4

The admissible operating speed

0,3

nadm is the rotating speed at which

0,2

the mean bearing temperature

P/C =0,5

0,1

reaches the admissible limit value, 0

in actual operating conditions.

100

150

200

250

300

350

400

450

500 dm (mm)

fv: Load-based coefficient, linked with actual lubricant viscosity

1,2

To obtain an approximate

VG 15

calculation of the operating

1,1

thermal speed, multiply the reference speed nθr by the

VG 32

coefficients fp and fv that

VG 46

originate from the table

0,9

opposite. nadm = nθr x fp x fv

0,8

VG 68

VG 150

0,7

To perform a more accurate analysis based

0,6

on standards, use

VG 460

the formulae listed below.

0,5 0

0,05

0,1

0,15

0,2

0,25

0,3

0,35

Mathematic calculation based on Standards The standard permits a calculation based on all parameters which can be indicated, in lieu of the reference values. In particular, the following parameters can be taken into account: - actual load P, - deviation between ambient temperature and internal bearing temperature Δθ, - actual viscosity ν. The equation to determine nadm is:

π x nadm

x [10-7 f0r x (ν x nadm)2 /3 x dm3 + f1r x P x dm] = 103 x qr x Ar

30 dm = mean diameter (D+d)/2 Ar = bearing journal area Ar = (D+d)B qr = 0.016 (Δθ/50) (Ar /50000)-0.34 w/mm2 if Ar > 50000 mm2

f1r: friction coefficient linked to load, drawn from ISO 15312 standard, Appendix A (values for information) f0r: friction coefficient linked with speed, drawn from ISO 15312 standard, Appendix A (values for information) An iterative process is necessary to solve this equation. Starting from a zero or low initial value for nadm the nadm value is incremented until equality is obtained.

0,4

0,45

0,5 P/C

Technical information: fundamentals

Standards The SNR Premier spherical roller bearings meet the requirements in the DIN 635-2 and ISO 15 standards.

Misalignment The SNR Premier spherical roller bearings admit

order to remain within values in keeping with the

misalignment to the order of 0.5°, without reduction

sealing system used.

in service life. However, this angle must be limited in

Tolerances The SNR Premier spherical roller bearings are deli-

The EF800 range features tight tolerances on the

vered in standard precision class: ISO 492 standard.

outer diameter and the bore, as well as the reduced

Upon request, SNR can deliver bearings with redu-

internal clearance tolerance. They provide better

ced tolerances, on one or more characteristics

control of the residual play after installation, which

(bore, outer diameter, rotation precision, inner ring,…).

must remain as low as possible.

Inner ring – Reduced bore tolerances Dimensions in mm Nominal bore

greater than up to

Micron-scale differences Cylindrical bore dm, d Tapered bore

Width

30 50

50 80

80 120

120 180

180 250

0 -7 25 0 0 -120

0 -9 30 0 0 -150

0 -12 35 0 0 -200

0 -15 40 0 0 -250

0 -18 46 0 0 -300

Outer ring – Reduced tolerances on the outside diameter Dimensions in mm Nominal outside Diameter

greater than up to

Micron-scale differences Outside Dm, D diameter

80 120 -5 -13

120 150 -5 -13

150 180 -5 -18

180 250

250 315

315 400

400 500

500 630

-10 -23

-13 -28

-13 -30

-15 -35

The outer ring has the same width tolerance as the inner ring.

Internal clearance Radial play Radial play is defined by the ISO 5753 standard.

EF800 range: standard choice to meet usual

The values are different for tapered bore bearings

applications: C4 for standard design EF800, C3 for

due to the strongly reduced internal clearance from

EF801 design and C0 for EF802 design. These tole-

interference fitting during installation.

rances are reduced to the upper 2/3 of the clearance range considered, in order to ensure proper clearance

Residual play order of magnitude Jrm recommended:

control after installation.

Jrm = 5.Vd.10-3 To meet the requirements of various installations and operating conditions, SNR proposes a basic design of bearings with normal clearance and, upon request, bearings with increased radial play C3, C4, etc.

Reduced radial clearance tolerances Dimensions in mm Nominal bore greater than 30 up to 40

40 50

50 65

65 80

80 100

100 120

120 140

140 160

160 180

180 200

200 225

225 250

250 280

With cylindrical bore Clearances in microns Group of clearances min. EF800 (C4) max.

65 80

85 100

100 120

120 145

150 180

180 210

205 240

240 280

260 310

285 340

320 380

355 420

385 460

Clearances in microns Group of clearances min. EF801 (C3) max.

50 60

60 75

75 90

90 110

110 135

135 160

160 190

190 220

200 240

220 260

245 290

265 320

290 350

Clearances in microns Group of clearances min. EF802 (C0) max.

35 45

40 55

50 65

60 80

75 100

90 120

110 145

130 170

140 180

155 200

165 220

180 240

200 260

With tapered bore (taper 1/12) Clearances in microns Group of clearances min. EKF800 (C4) max.

70 85

85 100

105 120

130 150

155 180

185 220

220 260

255 300

285 340

315 370

350 410

385 450

425 490

Clearances in microns Group of clearances min. EKF801 (C3) max.

55 65

65 80

80 95

100 120

120 140

145 170

175 200

195 230

220 260

245 290

275 320

295 350

330 390

Clearances in microns Group of clearances min. EKF802 (C0) max.

40 50

50 60

60 75

80 95

90 110

110 135

135 160

145 180

160 200

180 220

205 250

225 270

245 300

Axial play Axial play, Ja depends upon radial play, Jr, therefore, it can be estimated using the following formula: Ja = 2,27 Yo . Jr

Technical information: fundamentals

Internal clearance reduction at installation The bearing residual play must be controlled after installation. This precaution is mandatory for tapered bore bearings. The relationship between axial displacement (a) in a tapered bore bearing and the corresponding reduction of its radial play

Δ Jr is as follows:

Δ Jr / ti Taper 1/30: a = 30 Δ Jr / ti

Taper 1/12: a = 12

Δ Jr a Δ Jr ti

= axial displacement = radial play reduction = clearance reduction rate on inner ring: ti = 0.75 if the bearing is directly mounted on a solid shaft taper journal. ti = 0.7 if the bearing is mounted on a taper sleeve.

For more details, refer to the installation section, page 29.

Installation & Adjustment Periodic installation and removal causes modifi-

EF800 series (for vibrating or rotating load appli-

cations to the geometrical tolerances and to the

cations): the following fits & adjustments are

shapes of the bearing housings and shafts. When

recommended for new bearing housings:

fitting a new bearing, the geometry must be care-

- Tight fit at bearing housing: class P6.

fully checked; particularly at bearing housing and W33 lubrication groove level where bearing housing defects often occur in the groove, forming ridges on the edge. In this case, be careful before re-installing the bearings in these worn housings.

- Slip fit at shaft level: class g6.

Cylindrical and tapered bores The large majority of SNR Premier spherical roller bearings are available both in cylindrical and tapered bore (taper 1/12), identified by the suffix K. The 24000 and 24100 series bearings feature 1/30 taper, with K30 suffix.

Lubrication groove and holes The SNR Premier spherical roller bearings are delivered

Upon request, these bearings can be delivered

protected with an anti-oxident and not lubricated.

without lubrication groove or holes.

To facilitate lubrication, all SNR spherical roller

For vertical shaft applications, particular attention

bearings, except those of the 21300 series, are

must be paid to the lubricant supply. SNR recom-

equipped with a lubrication groove, and 3 lubrication

mends oil lubrication.

holes on the outer ring, identified by suffix W33. Their dimensions are indicated on pages 23 to 27.

Fitting dimensions The values mentioned in the tables on pages 23

For adapter sleeve mounting, the bearing ring

to 27 concern the maximum value of r1 and the

dimensions must be taken into account.

shoulder section diameter.

Designations and suffixes

SNR takes advantage of the Premier

Former designation

New designation

range launch to change our references

EG15

to become more uniform with the market

designations. For practical reasons,

EB33M

EMW33

this evolution will allow you to save

VB33M

VMW33

B33

W33

Jx0

EA*

time when placing orders and avoid any risk of confusion.

*For 24000 and 24100 series

Former designation (example)

Technical characteristics

22314EKB33MJ30

snap-ring groove in outer ring

W33 lubrication groove and holes in outer ring

Cages A

high capacity bearing, steel sheet cage

high capacity bearing, solid copper alloy cage (brass)

F800 bearing with solid cage for vibration applications, clearance upper 2/3 of C4 F801 bearing with solid cage for vibration applications, clearance upper 2/3 of C3

G15 polyamide 6.6 cage (with 25% fiber glass fill)

F802 bearing with solid cage for vibration applications, clearance upper 2/3 of C0

New designation

22314EMKW33C3 Internal clearances

Internal characteristics

Bore types

internal design index

internal design index, reinforced manufacturing

K30 tapered bore, 1/30

The figure refers to the ISO clearance category

clearance < normal

clearance normal (reference not included in part number)

clearance> normal

clearance> C3

tapered bore, 1/12

b k r1

Range

D1 r1 d3 D4

OVERALL DIMENSIONS

BASIC CAPACITIES x 1,000 newton

SPEEDS

Dynamic

Static

52 52 52 62

18 18 18 17

3 3 3

1,5 1,5 1,5

54,4 54,4 54,4 48,5

46,1 46,1 46,1 37,5

17 17 17 12

62 62 62 72

20 20 20 19

4,4 4,4 4,4

2 2 2

72 72 68,4 63

64,5 64,5 60,2 50

13 13 13 10

72 72 72 80

23 23 23 21

4,9 4,9 4,9

2 2 2

95,4 95,4 95,4 79

80 80 80 90 90 90 90 90

23 23 23 23 33 33 33 33

5,4 5,4 5,4

2,5 2,5 2,5

5,9 5,9 5,9 5,9

3 3 3 3

85 85 85 100 100 100 100 100

23 23 23 25 36 36 36 36

5,8 5,8 5,8

2,5 2,5 2,5

6,4 6,4 6,4 6,4

3 3 3 3

90 90 90 110 110 110 110 110

23 23 23 27 40 40 40 40

5,8 5,8 5,8

2,5 2,5 2,5

7,4 7,4 7,4 7,4

3,5 3,5 3,5 3,5

100 100 100 120 120 120 120 120

25 25 25 29 43 43 43 43

6,3 6,3 6,3

3 3 3

7,8 7,8 7,8 7,8

3,5 3,5 3,5 3,5

110 110 110 130 130 130 130 130

28 28 28 31 46 46 46 46

6,9 6,9 6,9

3 3 3

8,7 8,7 8,7 8,7

4 4 4 4

WEIGHTS (kg)

rpm

DESIGNATIONS

FITTING DIMENSIONS

Bore

reference

cylindrical

000 000 000 000

11 000 11 000 11 000 9 100

0,17 0,16 0,17 0,25

• 22205.EAW33 • 22205.EG15W33 • 22205.EMW33 21305.V

30 30 30 34

30 30 30 32

800 800 800 000

9 9 9 7

300 300 300 700

0,27 0,26 0,28 0,38

• 22206.EAW33 • 22206.EG15W33 • 22206.EMW33 21306.V

37 37 37 40

92 92 92 66

11 000 11 000 11 000 9 500

8 8 8 6

300 300 300 900

0,43 0,42 0,44 0,50

• 22207.EAW33 • 22207.EG15W33 • 22207.EMW33 21307.V

110 110 105 96 161 161 161 161

105 105 98 84 152 152 152 152

10 800 10 800 10 800 9 000 7 300 7 300 7 300 7 300

7 7 7 6 5 5 5 5

300 300 300 100 300 300 300 300

0,52 0,49 0,52 0,70 1,00 1,02 0,96 1,03

115 115 110 119 196 196 196 196

113 113 106 106 187 187 187 187

10 000 10 000 10 000 8 000 6 800 6 800 6 800 6 800

6 6 6 5 4 4 4 4

600 600 600 400 800 800 800 800

124 124 118 137 237 237 237 237

124 124 117 128 232 232 232 232

9 9 9 7 6 6 6 6

500 500 500 000 000 000 000 000

6 6 6 4 4 4 4 4

147 147 147 167 282 282 282 282

148 148 148 158 274 274 274 274

8 8 8 6 5 5 5 5

500 500 500 500 500 500 500 500

178 178 170 186 323 323 323 323

181 181 171 179 319 319 319 319

7 7 7 6 5 5 5 5

400 400 400 000 200 200 200 200

limit

mm d3 min D1 max

r1 max

46 46 46 55

46 46 46 52

1 1 1 1,1

36 36 36 37

56 56 56 65

55 55 55 60

1 1 1 1,1

45 45 45 46

42 42 42 44

65 65 65 71

63 63 63 68

1,1 1,1 1,1 1,5

• 22208.EAW33 • 22208.EG15W33 • 22208.EMW33 21308.V • 22308.EAW33 • 22308.EF800 • 22308.EG15W33 • 22308.EMW33

50 50 50 53 52 52 52 52

47 47 47 49 49 49 49 49

73 73 73 81 81 81 81 81

71 71 71 76 78 78 78 78

1,1 1,1 1,1 1,5 1,5 1,5 1,5 1,5

0,57 0,54 0,57 0,95 1,35 1,37 1,29 1,37

• 22209.EAW33 • 22209.EG15W33 • 22209.EMW33 21309.V • 22309.EAW33 • 22309.EF800 • 22309.EG15W33 • 22309.EMW33

54 54 54 59 58 58 58 58

52 52 52 54 54 54 54 54

78 78 78 91 91 91 91 91

76 76 76 85 87 87 87 87

1,1 1,1 1,1 1,5 1,5 1,5 1,5 1,5

200 200 200 900 400 400 400 400

0,60 0,58 0,61 1,24 1,81 1,83 1,73 1,83

• 22210.EAW33 • 22210.EG15W33 • 22210.EMW33 21310.V • 22310.EAW33 • 22310.EF800 • 22310.EG15W33 • 22310.EMW33

59 59 59 66 63 63 63 63

57 57 57 61 61 61 61 61

83 83 83 99 99 99 99 99

81 81 81 93 95 95 95 95

1,1 1,1 1,1 2 2 2 2 2

5 5 5 4 4 4 4 4

500 500 500 500 000 000 000 000

0,82 0,78 0,81 1,54 2,29 2,34 2,20 2,34

• 22211.EAW33 • 22211.EG15W33 • 22211.EMW33 21311.V • 22311.EAW33 • 22311.EF800 • 22311.EG15W33 • 22311.EMW33

66 66 66 73 68 68 68 68

64 64 64 66 66 66 66 66

91 91 91 109 109 109 109 109

90 90 90 102 104 104 104 104

1,5 1,5 1,5 2 2 2 2 2

5 5 5 4 3 3 3 3

100 100 100 100 700 700 700 700

1,13 1,07 1,15 1,94 2,80 2,89 2,71 2,89

• 22212.EAW33 • 22212.EG15W33 • 22212.EMW33 21312.V • 22312.EAW33 • 22312.EF800 • 22312.EG15W33 • 22312.EMW33

71 71 71 79 75 75 75 75

69 69 69 72 72 72 72 72

101 101 101 118 118 118 118 118

99 99 99 110 113 113 113 113

1,5 1,5 1,5 2,1 2,1 2,1 2,1 2,1

Bearings available with cylindrical or tapered bore (EAK, EMK, EG15K). All clearance variants are available upon request. These bearings can be fitted by means of adapter or withdrawal sleeves (refer to selection guidelines, pages 31-33). • Premier

Range

OVERALL DIMENSIONS

BASIC CAPACITIES x 1,000 newton

SPEEDS

Dynamic

Static

120 120 120 140 140 140 140 140

31 31 31 33 48 48 48 48

7,8 7,8 7,8

3,5 3,5 3,5

9,2 9,2 9,2 9,2

4 4 4 4

215 215 206 224 351 351 351 351

224 224 212 215 343 343 343 343

6 6 6 5 4 4 4 4

500 500 500 500 800 800 800 800

4 4 4 3 3 3 3 3

125 125 125 150 150 150 150 150

31 31 31 35 51 51 51 51

7,4 7,4 7,4

3,5 3,5 3,5

10,4 10,4 10,4 10,4

5 5 5 5

224 224 224 246 400 400 400 400

240 240 240 240 396 396 396 396

6 6 6 5 4 4 4 4

300 300 300 000 500 500 500 500

130 130 130 160 160 160 160 160

31 31 31 37 55 55 55 55

7,4 7,4 7,4

3,5 3,5 3,5

10,3 10,3 10,3 10,3

5 5 5 5

232 232 232 280 467 467 467 467

249 249 249 275 467 467 467 467

6 6 6 4 4 4 4 4

140 140 140 170 170 170 170 170

33 33 33 39 58 58 58 58

7,9 7,9 7,9

3,5 3,5 3,5

10,4 10,4 10,4 10,4

5 5 5 5

265 265 254 305 515 515 515 515

287 287 272 305 522 522 522 522

150 150 150 180 180 180 180

36 36 36 41 60 60 60

7,9 7,9 7,9

3,5 3,5 3,5

11 11 11

5 5 5

308 308 308 355 570 570 570

WEIGHTS (kg)

rpm

DESIGNATIONS

FITTING DIMENSIONS

Bore

cylindrical

700 700 700 800 400 400 400 400

1,51 1,44 1,59 2,38 3,41 3,49 3,27 3,49

• 22213.EAW33 • 22213.EG15W33 • 22213.EMW33 21313.V • 22313.EAW33 • 22313.EF800 • 22313.EG15W33 • 22313.EMW33

78 78 78 85 81 81 81 81

74 74 74 77 77 77 77 77

4 4 4 3 3 3 3 3

400 400 400 600 200 200 200 200

1,59 1,52 1,68 2,92 4,18 4,27 3,99 4,27

• 22214.EAW33 • 22214.EG15W33 • 22214.EMW33 21314.V • 22314.EAW33 • 22314.EF800 • 22314.EG15W33 • 22314.EMW33

84 84 84 91 85 85 85 85

000 000 000 900 300 300 300 300

4 4 4 3 3 3 3 3

200 200 200 400 000 000 000 000

1,64 1,58 1,71 3,49 5,08 5,21 4,91 5,21

• 22215.EAW33 • 22215.EG15W33 • 22215.EMW33 21315.V • 22315.EAW33 • 22315.EF800 • 22315.EG15W33 • 22315.EMW33

5 5 5 4 4 4 4 4

500 500 500 800 000 000 000 000

3 3 3 3 2 2 2 2

900 900 900 200 800 800 800 800

2,07 1,99 2,16 4,13 6,03 6,20 5,81 6,26

330 330 330 365 604 604 604

5 5 5 4 3 3 3

200 200 200 700 700 700 700

3 3 3 3 2 2 2

600 600 600 000 600 600 600

limit

reference

mm d3 min D1 max

r1 max

111 111 111 128 128 128 128 128

107 107 107 120 122 122 122 122

1,5 1,5 1,5 2,1 2,1 2,1 2,1 2,1

79 79 79 82 82 82 82 82

116 116 116 138 138 138 138 138

113 113 113 127 131 131 131 131

1,5 1,5 1,5 2,1 2,1 2,1 2,1 2,1

88 88 88 97 91 91 91 91

84 84 84 87 87 87 87 87

121 121 121 148 148 148 148 148

118 118 118 137 139 139 139 139

1,5 1,5 1,5 2,1 2,1 2,1 2,1 2,1

• 22216.EAW33 • 22216.EG15W33 • 22216.EMW33 21316.V • 22316.EAW33 • 22316.EF800 • 22316.EG15W33 • 22316.EMW33

94 94 94 104 98 98 98 98

91 91 91 92 92 92 92 92

129 129 129 158 158 158 158 158

127 127 127 145 148 148 148 148

2 2 2 2,1 2,1 2,1 2,1 2,1

2,56 2,45 2,64 5,23 7,06 7,23 7,23

• 22217.EAW33 • 22217.EG15W33 • 22217.EMW33 21317.VM • 22317.EAW33 • 22317.EF800 • 22317.EMW33

100 100 100 111 107 107 107

96 96 96 99 99 99 99

139 139 139 166 166 166 166

137 137 137 154 157 157 157

2 2 2 3 3 3 3

160 40 10,2 4,5 160 40 10,2 4,5 160 40 10,2 4,5 160 52,4 8,86 4 160 52,4 8,86 4 190 43 190 64 11,56 5 190 64 11,56 5 190 64 11,56 5

366 366 366 445 445 385 636 636 636

398 398 398 513 513 400 652 652 652

5 5 5 4 4 4 3 3 3

000 000 000 300 300 500 600 600 600

3 3 3 2 2 3 2 2 2

500 500 500 900 900 000 500 500 500

3,28 3,16 3,42 4,38 4,41 6,11 8,29 8,50 8,50

• • • • •

22218.EAW33 22218.EG15W33 22218.EMW33 23218.EAW33 23218.EMW33 21318.VM • 22318.EAW33 • 22318.EF800 • 22318.EMW33

105 105 105 104 104 117 110 110 110

101 101 101 101 101 104 104 104 104

149 149 149 149 149 176 176 176 176

144 144 144 141 141 162 166 166 166

2 2 2 2 2 3 3 3 3

170 170 200 200 200

395 395 696 696 696

417 417 751 751 751

4 4 3 3 3

600 600 200 200 200

3 3 2 2 2

200 200 300 300 300

3,93 4,14 9,75 9,97 9,97

• • • • •

110 110 120 120 120

107 107 109 109 109

158 158 186 186 186

153 153 174 174 174

2,1 2,1 3 3 3

43 9,93 4,5 43 9,93 4,5 67 12,15 6 67 12,15 6 67 12,15 6

22219.EAW33 22219.EMW33 22319.EAW33 22319.EF800 22319.EMW33

b k r1

D1 r1 d3 D4

OVERALL DIMENSIONS

BASIC CAPACITIES x 1,000 newton

SPEEDS

WEIGHTS (kg)

Static

100 150 50 6,4 3,5 165 52 8,4 4 165 52 8,4 4 165 52 8,4 4 180 46 11,2 5 180 46 11,2 5 180 46 11,2 5 180 60,3 9,44 4,5 180 60,3 9,44 4,5 215 73 13,3 6 215 73 13,3 6 215 73 13,3 6

325 448 448 448 449 449 449 558 558 787 787 787

425 575 575 575 495 495 495 661 661 844 844 844

3 4 4 4 4 4 4 3 3 3 3 3

800 200 200 200 200 200 200 500 500 000 000 000

2 2 2 2 3 3 3 2 2 2 2 2

500 800 800 800 100 100 100 300 300 200 200 200

2,83 4,32 4,26 4,37 4,82 4,60 5,08 6,38 6,48 12,41 12,78 12,78

• • • • • • • • • • • •

24020.EAW33 23120.EAW33 23120.EG15W33 23120.EMW33 22220.EAW33 22220.EG15W33 22220.EMW33 23220.EAW33 23220.EMW33 22320.EAW33 22320.EF800 22320.EMW33

108 114 114 114 118 118 118 118 118 127 127 127

107 111 111 111 112 112 112 112 112 114 114 114

110 170 45 7,83 3,5 170 45 7,83 3,5 180 56 8,86 4 180 56 8,86 4 180 69 8,4 4 200 53 12,2 6 200 53 12,2 6 200 53 12,2 6 200 69,8 10,52 5 200 69,8 10,52 5 240 80 15,6 7 240 80 15,6 7 240 80 15,6 7

397 397 521 521 530 573 573 573 716 716 928 928 928

517 517 669 669 675 643 643 643 869 869 972 972 972

4 4 4 4 2 4 4 4 3 3 2 2 2

300 300 000 000 600 000 000 000 200 200 800 800 800

3 3 2 2 1 2 2 2 2 2 2 2 2

000 000 700 700 300 800 800 800 300 300 000 000 000

3,59 3,61 5,45 5,48 6,48 6,93 6,72 7,22 9,25 9,33 16,76 17,41 17,41

• • • • • • • • • • • • •

23022.EAW33 23022.EMW33 23122.EAW33 23122.EMW33 24122.EAW33 22222.EAW33 22222.EG15W33 22222.EMW33 23222.EAW33 23222.EMW33 22322.EAW33 22322.EF800 22322.EMW33

123 123 125 125 121 130 130 130 130 130 139 139 139

120 180 180 180 180 200 200 200 215 215 215 260 260 260

46 46 60 60 62 62 80 58 58 76 86 86 86

7,83 7,83 7,34 7,34 10,04 10,04 10,05 12,16 12,16 11,01 18 18 18

3,5 3,5 3,5 3,5 4,5 4,5 4,5 6 6 5 8 8 8

424 424 465 465 630 630 695 654 654 815 1110 1110 1110

577 577 640 640 820 820 925 753 753 998 1280 1280 1280

4 4 3 3 3 3 2 3 3 2 2 2 2

200 200 000 000 400 400 200 600 600 800 500 500 500

2 2 2 2 2 2 1 2 2 1 1 1 1

900 900 100 100 400 400 200 500 500 900 800 800 800

3,96 3,99 5,01 5,06 7,62 7,70 9,73 8,69 8,94 11,62 22,35 22,60 22,60

• • • • • • • • • • • • •

23024.EAW33 23024.EMW33 24024.EAW33 24024.VMW33 23124.EAW33 23124.EMW33 24124.EAW33 22224.EAW33 22224.EMW33 23224.EMW33 22324.EAW33 22324.EF800 22324.EMW33

130 200 200 200 210 210 210 230 230 230 280 280 280

52 52 69 64 64 80 64 64 80 93 93 93

8,91 4 8,91 4 8,4 4 10,04 4,5 10,04 4,5 9,48 4,5 13,21 6 13,21 6 11,56 5 18,9 9 18,9 9 18,9 9

538 538 590 675 675 720 768 768 912 1260 1260 1260

721 721 795 906 906 965 898 898 1130 1400 1400 1400

3 3 2 3 3 2 3 3 2 2 2 2

600 600 600 000 000 100 500 500 600 400 400 400

2 2 1 2 2 1 2 2 1 1 1 1

600 600 900 300 300 200 400 400 800 700 700 700

5,79 5,94 7,33 8,33 8,43 10,13 10,77 10,97 13,70 26,80 27,87 27,87

• • • • • • • • • • • •

140 210 210 210 225

53 8,91 4 53 8,91 4 69 9,9 4,5 68 10,54 5

568 568 625 763

783 783 900 1030

3 3 2 2

500 500 500 800

2 2 1 2

500 500 800 100

6,21 6,27 7,66 10,08

• • • •

limit

reference

Bore

cylindrical

FITTING DIMENSIONS

Dynamic

rpm

DESIGNATIONS

mm d2

d3 min D1 max

r1 max

143 154 154 154 168 168 168 168 168 201 201 201

136 147 147 147 161 161 161 159 159 187 187 187

1,5 2 2 2 2,1 2,1 2,1 2,1 2,1 3 3 3

119 119 121 121 121 122 122 122 122 122 124 124 124

161 161 169 169 169 188 188 188 188 188 226 226 226

155 155 161 161 158 179 179 179 176 176 209 209 209

2 2 2 2 2 2,1 2,1 2,1 2,1 2,1 3 3 3

134 134 131 131 138 138 133 141 141 139 156 156 156

129 129 129 129 131 131 131 132 132 132 134 134 134

171 171 171 171 189 189 189 203 203 203 246 246 246

165 165 165 162 179 179 172 193 193 190 225 225 225

2 2 2 2 2 2 2 2,1 2,1 2,1 3 3 3

23026.EAW33 23026.EMW33 24026.EAW33 23126.EAW33 23126.EMW33 24126.EAW33 22226.EAW33 22226.EMW33 23226.EMW33 22326.EAW33 22326.EF800 22326.EMW33

145 145 141 148 148 144 151 151 150 164 164 164

139 139 139 141 141 141 144 144 144 144 147 147

191 191 191 199 199 199 216 216 216 263 263 263

183 183 179 189 189 184 206 206 204 243 243 243

2 2 2 2 2 2 3 3 3 4 4 4

23028.EAW33 23028.EMW33 24028.EAW33 23128.EAW33

155 155 153 159

149 149 149 152

201 201 201 213

193 193 189 203

2 2 2 2,1

Range

OVERALL DIMENSIONS

BASIC CAPACITIES x 1,000 newton

SPEEDS

WEIGHTS (kg)

Dynamic

Static

140 225 68 10,54 5 225 85 10,7 4,5 250 68 14,18 7 250 68 14,18 7 250 88 12,64 6 300 102 18,9 9 300 102 18,9 9 300 102 18,9 9

763 830 867 867 1090 1470 1470 1470

1030 1120 1010 1010 1370 1720 1720 1720

2 2 3 3 2 2 2 2

800 000 000 000 400 200 200 200

2 1 2 2 1 1 1 1

100 100 200 200 700 600 600 600

10,17 12,30 13,63 14,11 18,14 34,01 34,90 34,90

150 225 56 9,96 4,5 225 56 9,96 4,5 225 75 9,3 4 250 80 12,63 6 250 80 12,63 6 250 100 10,4 5 270 73 15,33 7 270 73 15,33 7 270 96 13,7 6 320 108 19,9 9 320 108 19,9 9

628 628 715 1010 1010 1070 1020 1020 1280 1660 1660

893 893 1000 1350 1350 1400 1220 1220 1620 1890 1890

3 3 2 2 2 2 2 2 2 2 2

400 400 400 600 600 000 800 800 200 000 000

2 2 1 1 1 1 2 2 1 1 1

300 300 600 900 900 100 000 000 700 500 500

160 240 240 240 270 270 270 290 290 290 340 340

60 60 80 86 86 109 80 80 104 114 114

10,52 5 10,52 5 9,4 4,5 13,7 6 13,7 6 11,7 5 16,94 8 16,94 8 14,85 7 20,3 10 20,3 10

711 711 785 1160 1160 1260 1160 1160 1470 1850 1850

1000 1000 1090 1580 1580 1740 1390 1390 1890 2210 2210

3 3 2 2 2 1 2 2 2 1 1

000 000 200 500 500 900 600 600 200 900 900

2 2 1 1 1 1 1 1 1 1 1

170 260 260 260 280 280 280 310 310 360 360

67 67 90 88 88 109 86 110 120 120

11,59 5 11,59 5 10,5 5 13,7 6 13,7 6 13,2 6 17,98 8 13,9 7,5 20,25 10 20,25 10

869 869 1010 1200 1200 1310 1330 1210 2100 2100

1240 1240 1430 1700 1700 1840 1610 1830 2630 2630

2 2 2 2 2 1 2 2 1 1

180 280 280 280 300 300 300 320 320 380

74 74 100 96 96 118 86 112 126

13,24 6 13,24 6 11,7 5 14,85 7 14,85 7 14,1 6 18 8 13,9 7,5 23,1 12

1020 1020 990 1420 1420 1470 1380 1290 1580

1450 1450 1700 1960 1960 2050 1660 2050 2190

190 290 75 13,24 6 290 75 13,24 6 290 100 11,59 5 320 104 20 7,5 320 128 14,2 6

1080 1080 1240 1180 1760

1570 1570 1800 1950 2480

rpm

DESIGNATIONS

FITTING DIMENSIONS

Bore

cylindrical

• • • • • • • •

23128.EMW33 24128.EAW33 22228.EAW33 22228.EMW33 23228.EMW33 22328.EAW33 22328.EF800 22328.EMW33

159 154 163 163 162 181 181 181

152 152 154 154 154 157 157 157

7,56 7,65 9,77 15,46 15,64 18,46 17,42 17,92 23,40 41,99 41,99

• • • • • • • • • • •

23030.EAW33 23030.EMW33 24030.EAW33 23130.EAW33 23130.EMW33 24130.EAW33 22230.EAW33 22230.EMW33 23230.EMW33 22330.EF800 22330.EMW33

167 167 162 171 171 165 177 177 174 188 188

200 200 500 800 800 000 900 900 500 400 400

9,15 9,22 11,61 19,84 19,97 24,29 22,06 22,79 29,42 50,70 50,70

• • • • • • • • • • •

23032.EAW33 23032.EMW33 24032.EAW33 23132.EAW33 23132.EMW33 24132.EAW33 22232.EAW33 22232.EMW33 23232.EMW33 22332.EF800 22332.EMW33

800 800 000 400 400 800 500 000 700 700

2 000 2 000 1 400 1 700 1 700 850 1 700 1 300 1 200 1 200

12,67 12,69 16,19 21,33 21,47 25,57 28,18 37,00 60,15 60,15

• • • • • • •

2 2 1 2 2 1 2 2 1

600 600 800 200 200 600 400 000 500

1 900 1 900 1 300 1 600 1 600 800 1 700 1 300 1 100

2 2 1 2 1

400 400 700 000 500

1 800 1 800 1 250 1 300 750

limit

reference

mm d3 min D1 max

r1 max

213 213 236 236 236 283 283 283

203 198 224 224 220 261 261 261

2,1 2,1 3 3 3 4 4 4

161 161 161 162 162 162 164 164 164 167 167

214 214 214 238 238 238 256 256 256 303 303

207 207 205 223 223 219 242 242 237 279 279

2,1 2,1 2,1 2,1 2,1 2,1 3 3 2,1 4 4

177 177 173 185 185 180 190 190 186 205 205

172 172 172 172 172 172 174 174 174 177 177

229 229 229 258 258 258 276 276 276 323 323

221 221 217 240 240 236 260 260 259 296 296

2,1 2,1 2,1 2,1 2,1 2,1 3 3 3 4 4

23034.EAW33 23034.EMW33 24034.EAW33 23134.EAW33 23134.EMW33 24134.EAW33 22234.EMW33 23234.VMW33 • 22334.EF800 • 22334.EMW33

190 190 184 195 195 189 201 199 223 223

181 181 181 182 182 182 187 187 187 187

249 249 249 268 268 268 293 293 343 343

238 238 233 250 250 245 277 264 313 313

2,1 2,1 2,1 2,1 2,1 2,1 4 4 4 4

16,57 16,70 21,74 26,89 27,21 31,57 28,94 39,80 67,60

• • • • • • •

23036.EAW33 23036.EMW33 24036.EAW33 23136.EAW33 23136.EMW33 24136.EAW33 22236.EMW33 23236.VMW33 22336.VMW33

201 201 198 205 205 200 209 210 223

191 191 191 194 194 194 197 197 197

269 269 269 286 286 286 303 303 363

255 255 250 267 267 261 287 274 313

2,1 2,1 2,1 3 3 3 4 4 4

17,55 17,74 22,52 34,50 40,12

• 23038.EAW33 • 23038.EMW33 • 24038.EMW33 23138.VMW33 • 24138.EAW33

213 213 206 218 213

201 201 201 204 204

279 279 279 306 306

266 266 261 278 289

2,1 2,1 2,1 3 3

b k r1

D1 r1 d3 D4

OVERALL DIMENSIONS

BASIC CAPACITIES x 1,000 newton

190 340 92 19,6 340 120 16,7 400 132 22,3

SPEEDS

WEIGHTS (kg)

rpm

DESIGNATIONS

FITTING DIMENSIONS

Dynamic

Static

Bore

limit

reference

cylindrical

9 9 12

1540 1480 1830

1870 2370 2650

2 200 1 800 1 500

1 600 1 200 1 100

35,31 48,50 76,40

• 22238.EMW33 23238.VMW33 22338.VMW33

222 223 240

207 207 210

d3 min D1 max

r1 max

323 323 380

305 290 332

4 4 5

200 280 310 310 340 340 360 360 420

60 82 109 112 140 98 128 138

12,2 6,3 14,28 7 12,67 6 16,7 9 16,98 8 20 10 16,7 9 22,3 12

620 1250 1440 1290 2030 1720 1630 1830

1000 1790 2120 2120 2930 2100 2700 2650

2 2 1 1 1 2 1 1

000 200 500 700 400 000 600 400

1 700 1 700 1 200 1 200 650 1 500 1 100 940

12,20 22,56 29,05 42,50 51,07 42,53 58,40 99,00

23940.VMW33 • 23040.EMW33 • 24040.EMW33 23140.VMW33 • 24140.EMW33 • 22240.EMW33 23240.VMW33 22340.VMW33

217 223 219 230 225 234 238 302

210 211 211 214 214 217 217 220

283 299 299 326 326 343 343 400

263 283 278 294 292 323 307 346

2,1 2,1 2,1 3 3 4 4 5

220 300 340 340 370 370 400 400 460

60 90 118 120 150 108 144 145

12,2 15,37 12,2 20,7 12,2 20,6 20,02 22,3

6,3 7 6,3 9 6,3 11 10 12

665 1450 1400 1540 1900 2100 2750 2110

1120 2110 2700 2600 3450 2690 3830 3150

1 1 1 1 1 1 1 1

800 900 400 500 300 800 500 300

1 500 1 500 1 100 1 100 670 1 300 1 100 890

12,30 29,52 39,50 53,00 65,60 59,47 78,83 125,00

23944.VMW33 • 23044.EMW33 24044.VMW33 23144.VMW33 24144.VW33 • 22244.EMW33 • 23244.EMW33 22344.VMW33

237 246 246 253 253 264 261 332

230 233 233 237 237 237 237 240

269 327 327 353 353 383 383 440

284 310 302 321 316 358 350 380

2,1 3 3 4 4 4 4 5

240 360 360 400 400 440 440 500

92 118 128 160 120 160 155

13,9 7,5 12,2 6,3 16,7 9 12,2 6,3 22,3 12 22,3 12 22,3 12

1090 1500 1720 2120 1170 2420 2450

2050 2900 2950 3900 1950 3950 3700

1 500 1 300 1 400 1 200 1 600 1 300 1 300

1 300 1 000 1 000 610 890 950 790

33,98 43,60 67,20 80,70 85,00 113,18 159,00

23048.VMW33 24048.VMW33 23148.VMW33 24148.VW33 22248.VMW33 23248.VMW33 22348.VMW33

270 264 276 270 333 285 362

253 253 257 257 257 257 260

347 347 383 383 423 423 480

324 319 348 342 377 372 414

3 3 4 4 4 4 5

260 400 400 440 440 480

104 140 144 180 174

16,7 9 12,2 6,3 16,7 9 12,2 6,3 22,3 12

1490 1900 2140 2700 2700

2430 3800 3750 5100 4450

1 1 1 1 1

400 200 300 100 200

1 200 950 950 560 850

47,70 67,20 93,40 114,00 147,00

23052.VMW33 24052.VMW33 23152.VMW33 24152.VW33 23252.VMW33

284 291 302 294 364

275 275 277 277 280

385 385 423 423 460

364 354 380 373 405

4 4 4 4 5

280 420 420 460 460 500 580

106 140 146 180 176 175

16,7 9 12,2 6,3 16,7 9 12,2 6,3 22,3 12 22,3 12

1500 2000 2240 2700 2900 3429

2850 4000 4050 5200 4900 5182

1 300 1 100 1 200 1 000 1 100 950

1 100 900 900 530 800 670

54,95 70,50 100,00 119,00 157,20 232,00

23056.VMW33 24056.VMW33 23156.VMW33 24156.VW33 23256.VMW33 22356.VMW33

311 318 322 315 327 437

295 295 300 300 300 306

405 405 440 440 480 554

379 375 401 396 426 493

4 4 5 5 5 6

300 460 460 500 500 540

118 160 160 200 192

16,7 9 12,2 6,3 16,7 9 12,2 6,3 22,3 12

1820 2500 2632 3250 3350

3350 5200 4645 6300 5600

1 200 1 000 1 100 900 1 000

1 000 800 850 490 750

75,27 102,00 134,00 159,00 200,00

23060.VMW33 24060.VMW33 23160.VMW33 24160.VW33 23260.VMW33

376 343 346 340 415

315 315 320 320 320

445 445 480 480 520

414 407 435 429 459

4 4 5 5 5

320 480 121 16,7 540 176 22,3

9 12

1920 3050

3600 5500

1 100 1 000

1 000 800

79,50 171,00

23064.VMW33 23164.VMW33

355 369

335 340

465 520

433 468

4 5

340 520 133 22,3 580 190 22,3 580 243 15

12 12 8

2270 3500 4400

4200 6100 8500

1 000 900 800

950 750 430

109,00 208,60 266,00

23068.VMW33 23168.VMW33 24168.VW33

426 455 383

358 360 360

502 560 560

468 501 485

5 5 5

360 540 134 22,3 600 192 22,3

12 12

2390 3681

4550 6683

950 850

900 700

114,00 231,60

23072.VMW33 23172.VMW33

400 475

378 380

522 580

488 522

5 5

380 560 135 22,3

2420

4700

900

850

119,80

23076.VMW33

466

398

542

508

400 600 148 22,3

2926

5648

800

750

156,00

23080.VMW33

497

418

582

542

Adapter and withdrawal sleeves: enhancing productivity

The SNR adapter and withdrawal sleeves greatly simplify spherical roller bearing installation/removal and allow you to save significant time in this repetitive operation.

Adapter sleeves

Withdrawal sleeves

The quality of the assembly and fit is of vital

To facilitate the fitting and dismantling of large-size

importance to ensure bearing reliability and

bearings (shaft diameters of 200mm and larger),

durability. The sleeves enable bearings with tapered

SNR proposes hydraulic adapter and withdrawal

bores to be interference fitted onto cylindrical shafts

sleeves featuring a channel for pressure-injection of

with wide diameter tolerances.

oil. The presence of oil reduces friction thereby

The taper of the bearing bore is usually 1/12 (K). It is

avoiding damage to the contact surfaces. This method optimizes bearing fitting and dismantling times, thereby reducing system downtimes.

1/30 for spherical roller bearings (24000 and 24100).

There are 2 main types of sleeves: â&#x20AC;˘ Adapter sleeves create the interference fit by pressing the bearing onto the sleeve. They are supplied with a lock washer and nut.

Whether the bearing is installed using an adapter sleeve or a withdrawal sleeve, it is vital to check that the internal radial clearance of the bearing remains sufficient after tightening the nut (see table on page 30).

â&#x20AC;˘ Withdrawal sleeves create the interference fit through insertion of the sleeve into the bearing bore. In addition, these sleeves provide for easy dismantling of the bearing by simply turning the withdrawal nut (to be ordered separately).

For each spherical roller bearing you will find the corresponding adapter and withdrawal sleeve in this catalog (pages 31 to 33).

When fitting the bearing or sleeve, the expansion of the inner ring reduces the internal radial clearance of the bearing. The reduction in clearance enables the tightness of the fit to be determined. It is important to check this. Check carefully that the clearance necessary for the correct functioning of the bearing is maintained.

Reduction of the internal clearance after fitting Measurement principle

Measurement method

The clearance is measured by sliding thickness gauges between the outer ring and the rollers. With large-size bearings, do not use gauges of thickness exceeding 0.15mm, as they are too rigid to follow the curve of the bearing raceway; use 2 or more thinner gauges to make up the required thickness.

Place the bearing in the vertical position with the rings parallel. Rotate the bearing to position the rollers. In table in page 30, identify the value of the gauges corresponding to the considered bearing bore and tolerance class (column 3). Slide the feeler blade between the most unloaded roller and the outer raceway (the upper part of the bearing if it rests on a support, or the lower part of the bearing if the outer ring is unrestrained or suspended). The tolerance value is between the two indicated gauges (column 3).

Adapter and withdrawal sleeves: enhancing productivity

Verification of clearance reduction Radial clearance Tighten the nut until the reduction in internal clearance is within the indicated limits. Check that the final residual clearance, which depends on the original clearance category, at least equals the value indicated (column 3).

Verification of radial clearance on assembly BEFORE FITTING (2)

Bearing bore (mm) from

AFTER FITTING (3)

Per ISO 5753 (mm)

Gauge to use

Min.

Max.

Min.

Max.

Min.

Max.

Yes

0,035

0,050

0,065

0,085

0,045

0,060

0,080

0,100

0,055

0,075

0,095

0,120

0,070

0,095

0,120

0,150

100

0,080

0,110

0,140

0,180

100

120

0,100

0,135

0,170

0,220

120

140

0,120

0,160

0,200

0,260

140

160

0,130

0,180

0,230

0,300

160

180

0,140

0,200

0,260

0,340

180

200

0,160

0,220

0,290

0,370

200

225

0,180

0,250

0,320

0,410

225

250

0,200

0,270

0,350

0,450

250

280

0,220

0,300

0,390

0,490

280

315

0,240

0,330

0,430

0,540

315

355

0,270

0,360

0,470

0,590

355

400

0,300

0,400

0,520

0,650

400

450

0,330

0,440

0,570

0,720

450

500

0,370

0,490

0,630

0,790

500

600

0,410

0,540

0,680

0,870

Range of installation/withdrawal sleeves, nuts, washers, taper bore bearings (suffix K) and associated wrenches

I N S TA L L AT I O N

Shaft BRG WRE

N(*)

BRG

N(*)

BRG

N(*)

BRG

N(*)

BRG

15/35

H304 KM4

35/50

H305 KM5

21305 22205

H2305

KM5

35/50

H306 KM6

21306 22206

H2306

KM6

50/80

H307 KM7

21307 22207

H2307

KM7

50/80

H308 KM8

21308 22208

H2308

KM8

22308

50/80

H309 KM9

21309 22209

H2309

KM9

22309

50/80

H310 KM10 21310 22210

H2310

KM10

22310

50/80

H311 KM11 21311 22211

H2311

KM11

22311

50/80

H312 KM12 21312 22212

H2312

KM12

22312

65 80/120

H313 KM13 21313 22213

H2313

KM13

22313

70 80/120

H314 KM14 21314 22214

H2314

KM14

22314

75 80/120

H315 KM15 21315 22215

H2315

KM15

22315

80 80/120

H316 KM16 21316 22216

H2316

KM16

22316

85 80/120

H317 KM17 21317 22217

H2317

KM17

22317

90 120/180 H318 KM18 21318 22218

H2318

KM18

22318

95 120/180 H319 KM19

22219

H2319

KM19

22319

95 100 120/180 H320 KM20

22220

H2320

KM20

22320 23220

H3120

KM20

23120

100 110 120/180 H322 KM22

22222 23022 H2322

KM22

22322 23222

H3122

KM22

23122

110 120 120/180

H2324

KM24

22324 23224

H3024

KML24

23024

H3124

KM24 22224 23124

115 130 120/180

H2326

KM26

22326 23226

H3026

KML26

23026

H3126

KM26 22226 23126

125 140

H2328

KM28

22328 23228

H3028

KML28

23028

H3128

KM28 22228 23128

135 150

H2330

KM30

22330 23230

H3030

KML30

23030

H3130

KM30 22230 23130

140 160

H2332

KM32

22332 23232

H3032

KML32

23032

H3132

KM32 22232 23132

150 170

H2334

KM34

22334 23234

H3034

KML34

23034

H3134

KM34 22234 23134

160 180

H2336

KM36

22336 23236

H3036

KML36

23036

H3136

KM36 22236 23136

170 190

H2338

KM38

22338 23238

H3038

KML38

23038

H3138

KM38 22238 23138

180 200

H2340

KM40

22340 23240

H3040

KML40

23040

H3140

KM40 22240 23140

H3144

HM44T 22244 23144

200 220

H2344H HM44T

22344 23244 H3044H HM3044 23044

220 240

H2348H HM48T

22348 23248 H3048H HM3048 23048 H3148H

HM48T

23148

240 260

H2352H HM52T

23252 H3052H HM3052 23052 H3152H

HM52T

23152

260 280

H2356H HM56T

22356 23256 H3056H HM3056 23056 H3156H

HM56T

23156

280 300

H3060H HM3060 23060 H3160H HM3160

23160

300 320

H3064H HM3064 23064 H3164H HM3164

23164

320 340

H3068H HM3068 23068 H3168H HM3168

23168

340 360

H3072H HM3072 23072 H3172H HM3172

23172

360 380

H3076H HM3076 23076

380 400

H3080H HM3080 23080

BRG : WRE : S: N:

Taper bore bearing (suffix K) Corresponding spanner wrench Sleeve Nut

N(*) : nut nut nut nut

KMx with washer MBx KMLxx with washer MBLxx HMxxT with MBxx HMxxxx with MSxxxx

e.g.: KM8 with MB8 KML34 with MBL34 HM44T with MB44 HM3056 with MS3056

N(*)

BRG

H3260H HM3160 23260

Adapter and withdrawal sleeves: enhancing productivity Range of installation/withdrawal sleeves, nuts, washers, taper bore bearings (suffix K) and associated wrenches

R E M O VA L

Shaft BRG

WRE

50/80

AH308

KM9

21308

22208

AH2308

KM9

22308

50/80

AH309

KM10

21309

22209

AH2309

KM10

22309

50/80

AHX310

KM11

21310

22210

AHX2310

KM11

22310

50/80

AHX311

KM12

21311

22211

AHX2311

KM12

22311

50/80

AHX312

KM13

21312

22212

AHX2312

KM13

22312

80/120

AH313G

KM14

21313

22213

AH2313G

KM14

22313

80/120

AH314G

KM15

21314

22214

AHX2314G

KM15

22314

80/120

AH315G

KM16

21315

22215

AHX2315G

KM16

22315

80/120

AH316

KM18

21316

22216

AHX2316

KM18

22316

80/120

AHX317

KM19

21317

22217

AHX2317

KM19

22317

120/180

AHX318

KM20

21318

22218

AHX2318

KM20

22318

BRG

120/180

AHX319

KM21

22219

AHX2319

KM21

22319

100

120/180

AHX320

KM22

22220

AHX2320

KM22

22320

105

110

120/180

AHX2322G

KM24

22322

115

120

120/180

AHX2324G

KM26

22324

AHX3024

KM26

23024

125

130

120/180

AHX2326G

KM28

22326

AHX3026

KM28

23026

135

140

AHX2328G

KM30

22328

AHX3028

KM30

23028

145

150

AHX2330G

KM32

22330

AHX3030

KM32

23030

150

160

AH2332G

KM34

22332

AH3032

KM34

23032

160

170

AH2334G

KM36

22334

AH3034

KM36

23034

170

180

AH2236G KM38 22236

AH2336G

KM38

22336

AH3036

KM38

23036

180

190

AH2238G KM40 22238

AH2338G

KM40

22338

AH3038G

KM40

23038

190

200

AH2240 HM44T 22240

AH2340

HM44T

22340

AH3040G

HM42T

23040

200

220

AOH2244 HM48T 22244

AOH2344

HM48T

22344 23244 AOH3044G

HM46T

23044

220

240

AOH2348

HM52T

23248

AOH3048

HM52T

23048

240

260

AOH2352G

HM56T

23252

AOH3052

HM56T

23052

260

280

AOH2356G

HM3160

23256

AOH3056

HM3060 23056

280

300

AOH3060

HM3064 23060

300

320

AOH3064G HM3068 23064

320

340

AOH3068G HM3072 23068

340

360

AOH3072G HM3076 23072

360

380

AOH3076G HM3080 23076

380

400

AOH3080G HM3084 23080

Note: For one same shaft diameter, the sleeves with suffix "G" do not feature the same nuts as sleeves without suffix "G".

BRG : WRE : S: N: S

AHX3120

KM22

AHX3122

KM22

AHX3124

BRG

23120

AHX3220

KM22

23220

22222

23122

AHX3222G

KM24

23222

AH24122

KM23

KM24

22224

23124

AHX3224G

KM26

23224

AH24024

KM25

24024

AH24124

KM26

24124

AHX3126

KM26

22226

23126

AHX3226G

KM28

23226

AH24026

KM27

24026

AH24126

KM28

24126

AHX3128

KM28

22228

23128

AHX3228G

KM30

23228

AH24028

KM29

24028

AH24128

KM30

24128

AHX3130G

KM30

22230

23130

AHX3230G

KM32

23230

AH24030

KM31

24030

AH24130

KM32

24130

AH3132G

KM32

22232

23132

AH3232G

KM34

23232

AH24032

KM34

24032

AH24132

KM34

24132

AH3134G

KM34

22234

23134

AH3234G

KM36

23234

AH24034

KM36

AH24134

KM36

24134

AH3136G

KM36

23136

AH3236G

KM38

23236

AH24036

KM38

24036

AH24136

KM38

AH3138G

KM38

23138

AH3238G

KM40

23238

AH24038

KM40

24038

AH24138

KM40

24138

AH3140

KM40

23140

AH3240

HM44T

23240

AH24040

HM42T

AH24140

HM42T

24140

AOH3144

HM48T

23144

AOH24044 HM46T

24044

AOH24144

HM46T

24144

AOH3148

HM52T

23148

AOH24048 HM50T

24048

AOH24148

HM52T

24148

AOH3152G

HM56T

23152

AOH24052G HM56T

AOH24152

HM56T

24152

AOH3156G

HM3160

23156

AOH24056G HM3160

AOH24156

HM3160

AOH3160G

HM3164

23160

AOH24160

HM3164

AOH3164G

HM3168

23164

AOH24164

HM3168

AOH3168G

HM3172

23168

AOH24168

HM3172

AOH3172

HM3176

23172

AH24172

HM3176

AOH3260G

HM3164

23260

AOH24060G HM3164

BRG

Taper bore bearing (suffix K) Corresponding spanner wrench Sleeve Nut

24060

BRG

Maintenance: installation-removal Quality, for a longer service life Know-how and cleanliness are essential factors for bearing installation and removal. SNR proposes suitable tools, tailored to your needs to optimize bearing service life.

- Induction heating devices: Fast Therm 20/35/150/300/600/1000 - Installation kit - Wrench for standard and precision locknuts - Hydraulic extractor, 10T - KevlarÂŽâ&#x20AC;&#x161; heat-resistant gloves

You will find all our products in SNR's Maintenance catalogue: 64 pages of solutions. - Lubrication - Installation & removal - Measurement & monitoring - Vibratory analysis, training, â&#x20AC;Ś

Maintenance: lubrication Your bearings' life insurance To maintain all bearing properties, suitable lubrication is a constant requirement.

Lubrication tips Obtaining satisfactory lubrication as early as the first turns of the bearing is a prerequisite.

• then, rotate the rollers until the grease appears at the upper part, guaranteeing adequate lubricant film between rollers and races.

- Grease lubrication

- Oil lubrication

It is recommended to use an SNR syringe or lubrication gun to inject grease under pressure: • underneath the cage and between the rollers, • underneath the rollers,

Use a suitable oil, in sufficient quantity. The bearing must be « splash » - lubricated in oil.

Relubrication When bearings are operated at high speeds and temperatures, relubrication is required. Grease can be introduced via the groove and the 3 lubrication holes in the outer ring. The bearing must turn during

lubrication to obtain suitable grease distribution. It is advisable to use the same grease as that used for first greasing.

SNR products tailored to your needs - SNR-LUB grease range, particularly suitable for spherical roller bearings:

• SNR-LUB EP grease: extreme pressure: high loads, normal speed. • SNR-LUB VX grease: high loads, low speeds: recommended for vibratory applications. • SNR-LUV FV grease: low speeds. - Special grease gun for bearings. - Automatic lubricator.

Monitoring, SNR Services: follow the life cycle of each bearing

Continuous and/or periodic vibratory monitoring 90% of the premature bearing failures are caused by external factors. Therefore, it is recommended to check the bearing state and monitor their evolution. The periodic/continuous inspection process is intended to detect and evaluate incipient failures in order to plan bearing replacement. The whole series of characteristic indicators must be set, depending on the concerned equipment: noise level, lubrication, bearing temperature in the application, aspect according to the pollution level, the dampness level, … In partnership with the 01dB-Metravib company, SNR offers a range of monitoring devices to analyze the environmental constraints which are detrimental to correct operation of your bearings and facilities. Our vibratory application expertise services will allow you to define: • the monitoring methods and inspection means, • the inspection periods, • the organization to be put in place, • the formal result recording process.

The laser sighting thermometer For bearing temperature monitoring in operation.

Calibrated thickness gauges Internal radial play measurement in spherical roller bearings and cylindrical bearings.

Bearing installation or removal operations Installing or removing a bearing is not a simple process. If you do not have the suitable facilities and means, or the available personnel, SNR proposes an alternative. Our work teams, especially trained by SNR, are comprised of reliable, professional agents. They will supervise your fitting-extraction operations or even perform them upon your request, providing you with optimised solutions. The services are tailored to each type of application and each sector: paper mills, iron & steel, quarries, cement works, agri-food, chair lifts and ski lifts, etc.

Shaft alignment Misalignment generates loads and vibrations which in turn cause premature wear on the bearings, but also to the couplings, packings, seals, â&#x20AC;Ś The abnormal loads caused by misalignment generally result in an increased energy consumption and have a direct

Entrust the SNR experts with your shaft

effect on the maintenance costs and on your pro-

alignment operations: a reliable partner is at

duction tool's availability rating.

your disposal.

Bearing expertise Bearing expertise allows better control of the actual work conditions and clear comprehension of the detrimental processes. It takes into account the

How to have your bearings analyzed

environment (pollution, humidity, vibrations, etc.),

The bearing must be shipped to us

the installation quality, the lubrication and the nature

uncleaned, together with an

of the imposed loads.

request sheet, available from your SNR

This investigation also allows determination of the

contact or dealer.

nature of the monitoring process to be implemented,

Please provide maximum information

as well as the need for on-going maintenance.

concerning your equipment operation and

analysis

environment, to allow us to determine the We wil provide a complete report as well as

failure causes.

technical tips in order to improve your bearing operations.

Spherical roller bearings: choose Premier to benefit from SNR's entire expertise Optimize each product to achieve the greatest performance possible, without increasing prices: this is a leading manufacturer's mission. The Premier quality approach essentially addresses the family of spherical bearings and allows us to appreciably optimize our product range in the four main categories effecting reliability and service life: steel selection, internal geometry, lubrication /

www.snr-contact.com

A U T O M O T I V E

A E R O S P A C E

I N D U S T R Y

SiĂ¨ge social : SNR ROULEMENTS - Rue des Usines - 74000 Annecy - FRANCE - RCS Annecy B 325821072 - Code NAF 291H www.snr-bearings.com

DOC.I_SPHER_CAT1.GBa - Non contractual document - SNR copyright international 03/2005 - Printed in France - Photos : SĂŠmaphore - Delphis - SNR

sealing, and finishing.