Turning How to select threading tools ■ Structure of threading tools selected table ● Identified as external threading machining and internal threading machining according to different machining type ● Separately listed out products according to series
Threading inserts type
Dimension picture of product shape
Including type, standard, class of tolerance
Structure of thread pitch
Stands for external threading and internal threading
External threading tools
ISO metric thread (with end) ISO 965-1980 DIN 13 GB/T 197-2003 Class of tolerance：6g/6H
Example is R type
Basic dimensions(mm) Type
Stock
Applicable inserts Inserts screw
a
h
b
L
s
Shim
Shim screw
Wrench
R type
SWR
▲
16
16
16
100
20
L type Type
Basic dimensions(mm)
Recommended coating grade YBG201 R L
2020K16
▲
20
20
20
125
25
2525M16
▲
25
25
25
150
32
3225P16
▲
32
32
25
170
32
RT16.01W-1.00GM
LT16.01W-1.00GM
1.00
3.97
9.525
4.4
☆
☆
3232P16
▲
32
32
32
170
40
RT16.01W-1.25GM
LT16.01W-1.25GM
1.25
3.97
9.525
4.4
★
☆
RT16.01W-1.50GM
LT16.01W-1.50GM
1.50
3.97
9.525
4.4
★
★
2525M22
▲
25
25
25
150
32
3225P22
▲
32
32
25
170
32
3232P22
▲
32
32
32
170
40
4040S22
△
40
40
40
250
50
1616H16
▲
16
16
16
100
20
RT16.01W-
RT22.01W-
I60M3.5×12
I60M5×17
MT16-M
MT22-M
SM4×8C
SM4×8C
The right hand tools
WT15IP
WT15IP WT20IP
External thread
SWL
1616H16
The left hand tools
Pitch/mm (pitch/Inch)
S
ØI.C
ød
RT16.01W-1.75GM
LT16.01W-1.75GM
1.75
3.97
9.525
4.4
★
☆
RT16.01W-2.00GM
LT16.01W-2.00GM
2.00
3.97
9.525
4.4
★
★
RT16.01W-2.50GM
LT16.01W-2.50GM
3.97
9.525
RT16.01W-3.00GM
LT16.01W-3.00GM
3.00
3.97
9.525
4.4
★
☆
RT22.01W-3.50GM
LT22.01W-3.50GM
3.50
5.56
12.7
5.5
★
☆
2.50
4.4
★
☆
RT22.01W-4.00GM
LT22.01W-4.00GM
4.00
5.56
12.7
5.5
★
☆
RT22.01W-4.50GM
LT22.01W-4.50GM
4.50
5.56
12.7
5.5
★
☆
RT22.01W-5.00GM
LT22.01W-5.00GM
5.00
5.56
12.7
5.5
★
☆
32
RT22.01W-5.50GM
LT22.01W-5.50GM
5.50
5.56
40
RT22.01W-6.00GM
LT22.01W-6.00GM
6.00
5.56
2020K16
▲
20
20
20
125
25
2525M16
▲
25
25
25
150
32
3225P16
▲
32
32
25
170
3232P16
▲
32
32
32
170
2525M22
▲
25
25
25
150
32
3225P22
▲
32
32
25
170
32
3232P22
▲
32
32
32
170
40
4040S22
△
40
40
40
250
50
LT16.01W-
I60M3.5×12
MT16-M
SM4×8C
WT15IP
★Recommended grade and always stock available
●Available grade and always stock available
LT22.01W-
I60M5×17
MT22-M
SM4×8C
12.7
5.5
☆
☆
12.7
5.5
★
☆
☆Recommended grade and produce according to order ○Available grade and produce according to order
WT15IP WT20IP
▲Stock available △Produce according to order
Production specification Production specification
Including type, (right and left hand), Basic dimensions, Stock
Including type, (right and left hand), Basic dimensions, Applicable inserts, Spare parts
Dimension picture of inserts shape
A 276
Turning Threading Tools Threading tools overview Introduction of threading inserts grade and chipbreaker Threading insert
A278-A279 A280 A281-A288
Threading inserts code key
A281
ISO metric external thread
A282
ISO metric internal thread
A283
General pitch thread
A284
Whitworth thread
A285
Unified thread
A286
British standard taper piper thread
A287
American standard taper piper thread
A288
Threading tools
A289-A291
Threading tools code key
A289
External threading tools
A290
Internal threading tools
A291
Application information of threading
A292-A302
A 277
A
Turning
Threading Tools Threading tools overview
General turning
Applications
For general
Parting and grooving
60o
55o
Cutline
Threading Threading tools overview
Thread name
ISO metric thread With end
General pitch thread Without end
General pitch thread Without end
Profil
GM
60
55
As picture shows R type external threads
As picture shows R type external threads
As picture shows R type external threads
Shape of insert (length: 11, 16, 22mm) A282
Dimensions (mm) (H×W×L) Pitch/mm (pitch/Inch) (Dia.× Length × Min.Diameter)
Pitch Toolholder
A284
A284
Pitch/mm (pitch/Inch)
Pitch/mm (pitch/Inch)
1.0~6.0
0.5~5.0 (5~48)
0.5~5.0 (5~48)
1.0~6.0
0.5~5.0 (5~48)
0.5~5.0 (5~48)
External thread
16×16×100 20×20×125 25×25×150 32×25×170 32×32×170 40×40×250 A290 16×125×12 16×150×16 16×150×20
Internal thread
20×150×25 20×180×25 25×150×32 32×200×40 32×250×40 40×300×50 A291
A 278
50×350×63
Turning
Threading Tools Threading tools overview
Whitworth thread
Unified thread (American standard threads)
Profil
W
UN
For connecting between pipe fitting and coupling of gas and water
Parting and grooving
Thread name
Applications
Pipe thread for heater, gas and water
General turning
For general
For aerospace and aviation industries
Cutline
British standard taper piper American standard taper threads pipe threads
NPT
As picture shows R type external threads
As picture shows R type external threads
Shape of insert (length: 11, 16, 22mm) A285
A286
A287
A288
External thread
Pitch/mm (pitch/Inch)
Pitch/mm (pitch/Inch)
Pitch/mm (pitch/Inch)
Pitch/mm (pitch/Inch)
8~16
8~20
11~28
8~27
8~16
8~20
11~28
8~27
16×16×100 20×20×125 25×25×150 32×25×170 32×32×170 40×40×250
16×125×12 16×150×16 16×150×20
Internal thread
20×150×25 20×180×25 25×150×32 32×200×40 32×250×40 40×300×50 50×350×63
A 279
Threading tools overview
BSPT
As picture shows R type external threads
Threading
As picture shows R type external threads
Dimensions (mm) (H×W×L) (Dia.× Length × Min.Diameter)
A
Golden TiN coated on surface have the functions of diminishing friction and identifying abrasion The inner layer nc-TiAlN coating has outstanding performance of wear resistance.
Threading Grade YBG201 is upgraded to be nc-TiAlN.
YBG201 PVD coating alloy has good toughness and wear resistance, it’s the unique threading grade for carbon steel, stainless steel and cast iron etc.
The functions and applications of wiper for threading inserts Reduce machining procedures
Before machining threading, it’s not necessary to finishing the threaded part, which can be realized by wiper to make the major diameter to achieve ideal dimensions and surface quality.
Automatically remove burrs
The wiper on threading inserts realizes finishing on major diameter of machined threading, which ensures no necessary to remove burrs after machining , therefore to get better surface quality.
Designing features of Threading insert’s chipbreaker Outstanding chip breaking performance
There is wavy chipbreaker designed on rake face of threading inserts. The chip flow will be lifted because of the function of chipbreaker, leading the chip move along the front of chipbreaker, till to be final shape, so make the chip to get small curvature radius
Chipbreaker design with Good Generality
Because the specific chipbreaker structure, moving, curling and breaking of chips are mainly controlled by inserts itself, therefore the result is still satisfied even for different materials and under different cutting parameters.
A 280
Threading Tools Threading insert
Turning
General turning
Threading inserts code key
A
Cutting direction Left hand
Parting and grooving
Righ hand
Inserts shape Others
Threading
Insert size
Threading insert
Stands for diameter of insert IC is 12.7 Stands for diameter of insert IC is 9.525 Stands for diameter of insert IC is 6.35
Tooth number of cutting edge Tooth number of each cutting edge
Cutting type External threading inserts Internal threading inserts
Screw pitch Full profile(range of screw pitch is showed by numbers)
(Range of screw pitch is showed by Letters)
Profile Iso metric 60o thread 60o general pitch thread 55o general pitch thread Whitworth thread Unified thread(American standard threads) British standard taper piper thread American standard taper piper thread
Chipbreaker Chipbreaker is showed by P (Omit P in metric thread)
A 281
A
Turning
Threading Tools Threading insert
General turning
ISO metric thread (with end) ISO 965-1980 DIN 13 GB/T 197-2003 Class of tolerance：6g/6H
Parting and grooving Threading Threading insert
R type
L type Type
The right hand tools
Basic dimensions(mm) The left hand tools
Pitch/mm (pitch/Inch)
S
ØI.C
External thread
RT16.01W-1.00GM
LT16.01W-1.00GM
1.00
3.97
9.525
4.4
☆
☆
RT16.01W-1.25GM
LT16.01W-1.25GM
1.25
3.97
9.525
4.4
★
☆
RT16.01W-1.50GM
LT16.01W-1.50GM
1.50
3.97
9.525
4.4
★
★
RT16.01W-1.75GM
LT16.01W-1.75GM
1.75
3.97
9.525
4.4
★
☆
RT16.01W-2.00GM
LT16.01W-2.00GM
2.00
3.97
9.525
4.4
★
★
RT16.01W-2.50GM
LT16.01W-2.50GM
2.50
3.97
9.525
4.4
★
☆
RT16.01W-3.00GM
LT16.01W-3.00GM
3.00
3.97
9.525
4.4
★
☆
RT22.01W-3.50GM
LT22.01W-3.50GM
3.50
5.56
12.7
5.5
★
☆
RT22.01W-4.00GM
LT22.01W-4.00GM
4.00
5.56
12.7
5.5
★
☆
RT22.01W-4.50GM
LT22.01W-4.50GM
4.50
5.56
12.7
5.5
★
☆
RT22.01W-5.00GM
LT22.01W-5.00GM
5.00
5.56
12.7
5.5
★
☆
RT22.01W-5.50GM
LT22.01W-5.50GM
5.50
5.56
12.7
5.5
☆
☆
RT22.01W-6.00GM
LT22.01W-6.00GM
6.00
5.56
12.7
5.5
★
☆
★Recommended grade and always stock available
☆Recommended grade and produce according to order
●Available grade and always stock available
A 282
ød
Recommended coating grade YBG201 R L
○Available grade and produce according to order
Threading Tools Threading insert
Turning
General turning
ISO metric thread (with end)
A
ISO 965-1980 DIN 13 GB/T 197-2003 Class of tolerance：6g/6H
Parting and grooving Threading
L type Type
The right hand tools
Basic dimensions(mm) The left hand tools
Pitch/mm (pitch/Inch)
S
ØI.C
ød
Recommended coating grade YBG201 R L
Internal thread
RT11.01N-1.00GM
LT11.01N-1.00GM
1.00
3.18
6.35
2.8
RT11.01N-1.25GM
LT11.01N-1.25GM
1.25
3.18
6.35
2.8
☆
☆
RT11.01N-1.50GM
LT11.01N-1.50GM
1.50
3.18
6.35
2.8
★
☆
RT11.01N-1.75GM
LT11.01N-1.75GM
1.75
3.18
6.35
2.8
☆
☆
RT11.01N-2.00GM
LT11.01N-2.00GM
2.00
3.18
6.35
2.8
★
☆
RT16.01N-1.00GM
LT16.01N-1.00GM
1.00
3.97
9.525
4.4
★
☆
RT16.01N-1.25GM
LT16.01N-1.25GM
1.25
3.97
9.525
4.4
☆
☆
RT16.01N-1.50GM
LT16.01N-1.50GM
1.50
3.97
9.525
4.4
★
★
RT16.01N-1.75GM
LT16.01N-1.75GM
1.75
3.97
9.525
4.4
☆
☆
RT16.01N-2.00GM
LT16.01N-2.00GM
2.00
3.97
9.525
4.4
★
★
RT16.01N-2.50GM
LT16.01N-2.50GM
2.5
3.97
9.525
4.4
★
★
☆
☆
RT16.01N-3.00GM
LT16.01N-3.00GM
3.00
3.97
9.525
4.4
★
★
RT22.01N-3.50GM
LT22.01N-3.50GM
3.50
5.56
12.7
5.5
☆
☆
RT22.01N-4.00GM
LT22.01N-4.00GM
4.00
5.56
12.7
5.5
★
☆
RT22.01N-4.50GM
LT22.01N-4.50GM
4.50
5.56
12.7
5.5
☆
☆
RT22.01N-5.00GM
LT22.01N-5.00GM
5.00
5.56
12.7
5.5
★
☆
RT22.01N-5.50GM
LT22.01N-5.50GM
5.50
5.56
12.7
5.5
☆
☆
RT22.01N-6.00GM
LT22.01N-6.00GM
6.00
5.56
12.7
5.5
★
☆
★Recommended grade and always stock available
☆Recommended grade and produce according to order
●Available grade and always stock available
○Available grade and produce according to order
A 283
Threading insert
R type
A
Turning
Threading Tools Threading insert
General turning
General pitch thread (without end)
Parting and grooving R type Threading
Type The right hand tools
Threading insert
RT16.01W-A60
60
RT16.01W-G60P*
LT16.01W-G60P*
External thread
LT16.01W-AG60
RT22.01W-N60
LT22.01W-N60
RT16.01W-A55
LT16.01W-A55
RT16.01W-G55 55
The left hand tools
LT16.01W-G60
RT16.01W-AG60
o
Basic dimensions(mm)
LT16.01W-A60
RT16.01W-G60 o
There is chipbreaker on this kinds of inserts nose
L type
LT16.01W-G55
Pitch/mm (pitch/Inch)
S
ØI.C
ød
αo
0.5-1.5(48-16)
3.97
9.525
4.4
60o
4.4
60
o
60
o
60
o
60
o
55
o
55
o o
1.75-3.0(14-8)
3.97
1.75-3.0(14-8)
3.97
0.5-3.0(48-8)
3.97
3.5-5.0(7-5)
5.56
0.5-1.5(48-16)
3.97
1.75-3.0(14-8)
3.97
9.525 9.525 9.525 12.7 9.525
1.75-3.0(14-8)
3.97
9.525
4.4
55
LT16.01W-AG55
0.5-3.0(48-8)
3.97
9.525
4.4
55o
5.5
o
LT22.01W-N55
3.5-5.0(7-5)
5.56
12.7
The right hand tools RT16.01N-A60 RT16.01N-G60 RT16.01N-G60P*
Internal thread
RT16.01N-AG60 RT22.01N-N60 RT16.01N-A55 RT16.01N-G55 RT16.01N-G55P*
55
LT16.01N-A60 LT16.01N-G60 LT16.01N-G60P*
S
ØI.C
ød
αo
0.5-1.5 (48-16)
3.97
9.525
4.4
60o
4.4
60
o
60
o
60
o
LT16.01N-AG60
60
o
LT22.01N-N60
55
o
55
o
55
o o
1.75-3.0 0.5-3.0 (48-8) 3.5-5.0 (7-5)
LT16.01N-A55 LT16.01N-G55 LT16.01N-G55P*
0.5-1.5(48-16) 1.75-3.0(14-8) 1.75-3.0(14-8)
☆
★
☆
★
☆
☆
☆
☆
☆
☆
☆
★
★
★
☆
☆
☆
There is chipbreaker on this kinds of inserts nose
Pitch/mm (pitch/Inch) 1.75-3.0
☆
☆
○Available grade and produce according to order
Basic dimensions(mm)
The left hand tools
★
☆Recommended grade and produce according to order
L type Type
3.97 3.97 3.97 5.56 3.97 3.97 3.97
9.525 9.525 9.525 12.7 9.525 9.525 9.525
4.4 4.4 5.5 4.4 4.4 4.4
RT16.01N-AG55
LT16.01N-AG55
0.5-3.0(48-8)
3.97
9.525
4.4
55
RT22.01N-N55
LT22.01N-N55
3.5-5.0(7-5)
5.56
12.7
5.5
55o
★Recommended grade and always stock available
Recommended coating grade YBG201 R L ☆
☆
☆
☆
★
☆
★
☆
☆
☆
☆
☆
☆
☆
★
☆
★
☆
☆
☆
☆Recommended grade and produce according to order
●Available grade and always stock available
A 284
4.4
LT16.01W-G55P*
R type
55
4.4
9.525
●Available grade and always stock available
o
5.5
RT16.01W-AG55
★Recommended grade and always stock available
60
4.4
RT16.01W-G55P*
RT22.01W-N55
o
4.4
Recommended coating grade YBG201 R L
○Available grade and produce according to order
Threading Tools Threading insert
Turning
General turning
Whitworth thread (with end)
A Parting and grooving
ISO 228/1:1982, DIN 259, B.S.84:1956 Class of tolerance：Medium class A
Threading
L type Type
The right hand tools
Basic dimensions(mm) The left hand tools
Pitch/mm (pitch/Inch)
S
ØI.C
ød
Recommended coating grade YBG201 R L
External thread
RT16.01W-8W
LT16.01W-8W
8
3.97
9.525
4.4
☆
☆
RT16.01W-9W
LT16.01W-9W
9
3.97
9.525
4.4
☆
☆
RT16.01W-10W
LT16.01W-10W
10
3.97
9.525
4.4
☆
☆
RT16.01W-11W
LT16.01W-11W
11
3.97
9.525
4.4
☆
☆
RT16.01W-12W
LT16.01W-12W
12
3.97
9.525
4.4
☆
☆
RT16.01W-14W
LT16.01W-14W
14
3.97
9.525
4.4
☆
☆
RT16.01W-16W
LT16.01W-16W
16
3.97
9.525
4.4
☆
☆
★Recommended grade and always stock available
☆Recommended grade and produce according to order
●Available grade and always stock available
R type
L type Type
The right hand tools
○Available grade and produce according to order
Basic dimensions(mm) The left hand tools
Pitch/mm (pitch/Inch)
S
ØI.C
ød
Recommended coating grade YBG201 R L
Internal thread
RT16.01N-8W
LT16.01N-8W
8
3.97
9.525
4.4
☆
☆
RT16.01N-9W
LT16.01N-9W
9
3.97
9.525
4.4
☆
☆
RT16.01N-10W
LT16.01N-10W
10
3.97
9.525
4.4
☆
☆
RT16.01N-11W
LT16.01N-11W
11
3.97
9.525
4.4
☆
☆
3.97
9.525
4.4
☆
☆
9.525
4.4
☆
☆
9.525
4.4
☆
☆
RT16.01N-12W
LT16.01N-12W
12
RT16.01N-14W
LT16.01N-14W
14
3.97
RT16.01N-16W
LT16.01N-16W
16
3.97
★Recommended grade and always stock available
☆Recommended grade and produce according to order
●Available grade and always stock available
○Available grade and produce according to order
A 285
Threading insert
R type
A
Turning
Threading Tools Threading insert
General turning
Unified thread (with end) ASME B1.1-1989 Class of tolerance：2A/2B
Parting and grooving Threading Threading insert
R type
L type Type
The right hand tools
Basic dimensions(mm) The left hand tools
Pitch/mm (pitch/Inch)
S
ØI.C
ød
External thread
RT16.01W-8UN
LT16.01W-8UN
8
3.97
9.525
4.4
☆
☆
RT16.01W-10UN
LT16.01W-10UN
10
3.97
9.525
4.4
☆
☆
RT16.01W-12UN
LT16.01W-12UN
12
3.97
9.525
4.4
☆
☆
RT16.01W-14UN
LT16.01W-14UN
14
3.97
9.525
4.4
☆
☆
RT16.01W-16UN
LT16.01W-16UN
16
3.97
9.525
4.4
☆
☆
RT16.01W-18UN
LT16.01W-18UN
18
3.97
9.525
4.4
☆
☆
RT16.01W-20UN
LT16.01W-20UN
20
3.97
9.525
4.4
☆
☆
★Recommended grade and always stock available
☆Recommended grade and produce according to order
●Available grade and always stock available
R type
The right hand tools
○Available grade and produce according to order
L type Type
Basic dimensions(mm) The left hand tools
Pitch/mm (pitch/Inch)
S
ØI.C
ød
Recommended coating grade YBG201 R L
Internal thread
RT16.01N-8UN
LT16.01N-8UN
8
3.97
9.525
4.4
☆
☆
RT16.01N-10UN
LT16.01N-10UN
10
3.97
9.525
4.4
☆
☆
RT16.01N-12UN
LT16.01N-12UN
12
3.97
9.525
4.4
☆
☆
RT16.01N-14UN
LT16.01N-14UN
14
3.97
9.525
4.4
☆
☆
3.97
9.525
4.4
☆
☆
9.525
4.4
☆
☆
9.525
4.4
☆
☆
RT16.01N-16UN
LT16.01N-16UN
16
RT16.01N-18UN
LT16.01N-18UN
18
3.97
RT16.01N-20UN
LT16.01N-20UN
20
3.97
★Recommended grade and always stock available
☆Recommended grade and produce according to order
●Available grade and always stock available
A 286
Recommended coating grade YBG201 R L
○Available grade and produce according to order
Threading Tools Threading insert
Turning
General turning
British standard taper piper thread (with end)
A Parting and grooving
ISO 7/1:1994 B.S.21:1985 Standard BSPT
Threading
L type Type
The right hand tools
Basic dimensions(mm) The left hand tools
Pitch/mm (pitch/Inch)
S
ØI.C
ød
Recommended coating grade YBG201 R L
External thread
RT16.01W-11 BSPT
LT16.01W-11 BSPT
11
3.97
9.525
4.4
☆
☆
RT16.01W-14 BSPT
LT16.01W-14 BSPT
14
3.97
9.525
4.4
☆
☆
RT16.01W-19 BSPT
LT16.01W-19 BSPT
19
3.97
9.525
4.4
☆
☆
RT16.01W-28 BSPT
LT16.01W-28 BSPT
28
3.97
9.525
4.4
☆
☆
★Recommended grade and always stock available
☆Recommended grade and produce according to order
●Available grade and always stock available
R type
L type
Type The right hand tools
○Available grade and produce according to order
Basic dimensions(mm) The left hand tools
Pitch/mm (pitch/Inch)
S
ØI.C
ød
Recommended coating grade YBG201 R L
Internal thread
RT16.01N-11 BSPT
LT16.01N-11 BSPT
11
3.97
9.525
4.4
☆
☆
RT16.01N-14 BSPT
LT16.01N-14 BSPT
14
3.97
9.525
4.4
☆
☆
RT16.01N-19 BSPT
LT16.01N-19 BSPT
19
3.97
9.525
4.4
☆
☆
RT16.01N-28 BSPT
LT16.01N-28 BSPT
28
3.97
9.525
4.4
☆
☆
★Recommended grade and always stock available
☆Recommended grade and produce according to order
●Available grade and always stock available
○Available grade and produce according to order
A 287
Threading insert
R type
A
Turning
Threading Tools Threading insert
General turning
American standard taper piper thread (with end) ASME B1.20.1-1983 Standard NPT
Parting and grooving Threading Threading insert
R type
L type
Type The right hand tools
Basic dimensions(mm) The left hand tools
External thread
RT16.01W-8 NPT
LT16.01W-8NPT
RT16.01W-11.5 NPT
LT16.01W-11.5NPT
Pitch/mm (pitch/Inch)
S
ØI.C
ød
8
3.97
9.525
4.4
☆
☆
11.5
3.97
9.525
4.4
☆
☆
RT16.01W-14 NPT
LT16.01W-14NPT
14
3.97
9.525
4.4
☆
☆
RT16.01W-18 NPT
LT16.01W-18NPT
18
3.97
9.525
4.4
☆
☆
RT16.01W-27 NPT
LT16.01W-27NPT
27
3.97
9.525
4.4
☆
☆
★Recommended grade and always stock available
☆Recommended grade and produce according to order
●Available grade and always stock available
R type
The right hand tools
○Available grade and produce according to order
L type Type
Basic dimensions(mm) The left hand tools
Pitch/mm (pitch/Inch)
S
ØI.C
ød
Recommended coating grade YBG201 R L
Internal thread
RT16.01N-8 NPT
LT16.01N-8 NPT
8
3.97
9.525
4.4
☆
☆
RT16.01N-11.5 NPT
LT16.01N-11.5 NPT
10
3.97
9.525
4.4
☆
☆
RT16.01N-14 NPT
LT16.01N-14 NPT
12
3.97
9.525
4.4
☆
☆
RT16.01N-18 NPT
LT16.01N-18 NPT
18
3.97
9.525
4.4
☆
☆
RT16.01N-27 NPT
LT16.01N-27 NPT
20
3.97
9.525
4.4
☆
☆
★Recommended grade and always stock available
☆Recommended grade and produce according to order
●Available grade and always stock available
A 288
Recommended coating grade YBG201 R L
○Available grade and produce according to order
Turning
Threading Tools Threading tools
Thread type
Screw clamping Internal thread
Cutting direction Right hand
Parting and grooving
Clamping system Top clamping
General turning
Threading tools code key
A
Left hand
External thread Threading Threading tools
Nose height
Note: round toolholders are showed by 00. Only label integer for example: h=8mm label as 08
Shank width
Note:round holder is showed by diameter
Tool length Code Length
Insert size Code Triangle side length Inscribed circle
A 289
A General turning Parting and grooving Threading
External threading tools
Threading tools Example is R type
Basic dimensions(mm) Type
SWR
SWL
Stock
a
h
b
L
s
1616H16
▲
16
16
16
100
20
2020K16
▲
20
20
20
125
25
2525M16
▲
25
25
25
150
32
3225P16
▲
32
32
25
170
32
3232P16
▲
32
32
32
170
40
2525M22
▲
25
25
25
150
32
3225P22
▲
32
32
25
170
32
3232P22
▲
32
32
32
170
40
4040S22
△
40
40
40
250
50
1616H16
▲
16
16
16
100
20
2020K16
▲
20
20
20
125
25
2525M16
▲
25
25
25
150
32
3225P16
▲
32
32
25
170
32
3232P16
▲
32
32
32
170
40
2525M22
▲
25
25
25
150
32
3225P22
▲
32
32
25
170
32
3232P22
▲
32
32
32
170
40
4040S22
△
40
40
40
250
50
▲Stock available △Produce according to order
A 290
Applicable inserts Inserts screw
Shim
Shim screw
Wrench
WT15IP
RT16.01W-
I60M3.5×12
MT16-M
SM4×8C
RT22.01W-
I60M5×17
MT22-M
SM4×8C
LT16.01W-
I60M3.5×12
MT16-M
SM4×8C
LT22.01W-
I60M5×17
MT22-M
SM4×8C
WT15IP WT20IP
WT15IP
WT15IP WT20IP
Threading Tools Threading tools
Turning
General turning
Internal threading tools
A Parting and grooving
Basic dimensions(mm) Type
SNL
d
L
b
DmIn
s
h
L1
0016K11
▲
16
125
16
12
10
15
20.9
0016M11
▲
16
150
15.5
16
10.5
15
25.9
0016M16
▲
16
150
15.5
20
12
15
27
0020M16
▲
20
150
19
25
14
18
28.7
0020Q16
▲
20
180
19
25
14
18
34
0025M16
▲
25
150
24
32
17
23
28.8
0032R16
▲
32
200
31
40
22
30
30.9
0032S16
▲
32
250
31
40
22
30
30.9
0040T16
▲
40
300
38.5
50
27
37
31.5
0050U16
▲
50
350
49.5
63
35
49
40.2
0020Q22
▲
20
180
21.5
25
15
18
35
0025R22
▲
25
200
24
32
19
23
39
0032S22
▲
32
250
31
40
22
30
36.4
0040T22
▲
40
300
38.5
50
27
37
37.2
0050U22
▲
50
350
48.5
63
35
47
42.6
0016K11
▲
16
125
16
12
10
15
20.9
0016M11
▲
16
150
15.5
16
10.5
15
25.9
0016M16
▲
16
150
15.5
20
12
15
27
0020M16
▲
20
150
19
25
14
18
28.7
0020Q16
▲
20
180
19
25
14
18
34
0025M16
▲
25
150
24
32
17
23
28.8
0032R16
▲
32
200
31
40
22
30
30.9
0032S16
▲
32
250
31
40
22
30
30.9
0040T16
▲
40
300
38.5
50
27
37
31.5
0050U16
▲
50
350
49.5
63
35
49
40.2
0020Q22
▲
20
180
21.5
25
15
18
35
0025R22
▲
25
200
24
32
19
23
39
0032S22
▲
32
250
31
40
22
30
36.4
0040T22
▲
40
300
38.5
50
27
37
37.2
0050U22
▲
50
350
48.5
63
35
47
42.6
Inserts screw
Shim
Shim screw
Wrench
RT11.01N-
I60 M2.5×6.5
---
---
WT07IP
I60 M3.5×8
---
---
WT15IP
I60 M3.5×12
MT16-M
SM4×8C
WT15IP
RT16.01N-
I60 M5×10
RT22.01N-
LT11.01N-
LT16.01N-
LT22.01N-
Threading tools
SNR
Stock
Applicable inserts
Threading
Example is R type
WT20IP
WT15IP
I60 M5×17
MT22-M
SM4×8C
I60 M2.5×6.5
---
---
WT07IP
I60 M3.5×8
---
---
WT15IP
I60 M3.5×12
MT16-M
SM4×8C
WT15IP
I60 M5×10
---
---
WT20IP
I60 M5×17
MT22-M
SM4×8C
WT20IP
WT15IP WT20IP
▲Stock available △Produce according to order
A 291
A
Turning
Threading Tools
Application information of threading
General turning
Please follow the following steps to get the best threading result:
Parting and grooving
Select proper thread machining method
By checking reference table of standard
Decide helical angle, select shim
threading program, select feasible cutting
Choose proper insert and toolholder
parameters.
size
Select feed way
Threading
Machining way of threading tools External threading machining (Right thread)
External threading machining (Left thread)
Application information of threading Internal threading machining (Right thread)
A 292
Internal threading machining (Left thread)
Threading Tools
Application information of threading
Turning
Decide helical angle, select shim
General turning
The clearance angle of threading inserts is actually along the edge (flank), this has significant effect on Heat Diffusion, Spreading of abrasion as well as tool life, security and pitch quality. The clearance angle of threading pitch on clearance face is determined by thread helical angle. These two angle are similar to each other, if inclined angle of inserts is different with helical angle, then clearance angle won’t be the same too. The helical angle of pitch has to be the same as the inclined angle of inserts to prevent over wearing in the clearance face which could affect tool life. The helical angle is calculated as below:
Helical angle
Parting and grooving Threading
Inclined angle
arctan
Application information of threading
P= Pitch d2= pitch diameter The common inclined angel is 1°, MT standard shim and its inclined angle is 1°too The calculation of clearance angle : Clearance angle B is calculated as below: Pls refer to table below for actual value:
2θ=Thread profile angle α=The rake angle of external standard threading tools is 10°; The rake angle of internal standard threading tools is 15°
Thread profile angle
External thread
Internal thread
The shim has to be changed when helical angle of thread is ≤ clearance angle of tool, which would cause intervene on inserts flank. Please change shim to adjust the difference between helical angle of thread and inclined angle of shim to be within 2°~0°. For Example: when P=1.5, d2=24mm Helical Angle 1.14o-(2°~0°)= Inclined Angle (-0.86°~1.14°) It’s feasible by using standard shim 1°.
Select shim: Guide(Screw pitch)mm
Threading number/inch
Shim specification table are as following:
Screw pitch Insert range dimensions
Inclined angle
A
Shim
Working diameter Note: The standard angle of shim for our threading tools is 1° (MT16-01M or MT22-01M)
A 293
A
Turning
Threading Tools
Application information of threading
Select proper inserts and size of toolholder (Please refer to detailed table of threading tools and inserts)
General turning
Parameter table for threading machining program under different standards
Parting and grooving
Table of recommended in-feed for metric ISO external threading with wiper edge Screw pitch Total in-feed
Threading
Number of passes Order to follow in threading operation
Application information of threading
A 294
The value of radial in-feed (X) And flank in-feed (Z)
Threading Tools
Application information of threading
Turning
Table of recommended in-feed for metric ISO internal threading with wiper edge
General turning
Screw pitch Total in-feed
Parting and grooving
Number of passes Order to follow in threading operation
A
The Value of radial in-feed (X) and flank in-feed (Z)
Threading Application information of threading
A 295
A General turning Parting and grooving Threading Application information of threading
A 296
Turning
Threading Tools
Application information of threading
Table of recommended in-feed for American unified standard external threading inserts Screw pitch Total in-feed Number of passes Order to follow in threading operation
The value of radial in-feed (X) and flank in-feed (Z)
Threading Tools
Application information of threading
Turning
Table of recommended in-feed for American unified standard internal threading inserts
General turning
Screw pitch Total in-feed
Parting and grooving
Number of passes Order to follow in threading operation
A
The value of radial in-feed (X) and flank in-feed (Z)
Threading Application information of threading
A 297
A General turning Parting and grooving Threading Application information of threading
A 298
Turning
Threading Tools
Application information of threading
Table of recommended in-feed for British standard internal and external threading inserts Screw pitch Total in-feed Number of passes Order to follow in threading operation
The value of radial in-feed (X) and flank in-feed (Z)
Threading Tools
Application information of threading
Turning
Table of recommended in-feed for NPT internal and external threading inserts
A General turning
Screw pitch Total in-feed Number of passes
Parting and grooving
Order to follow in threading operation
The value of radial in-feed (X) and flank in-feed (Z)
Threading Application information of threading
Table of recommended in-feed for BSPT internal and external threading inserts Screw pitch Total in-feed Number of passes Order to follow in threading operation
The value of radial in-feed (X) and flank in-feed (Z)
A 299
A
Turning
Threading Tools
Application information of threading
General turning
Recommended cutting parameters list Unit cutting force
Parting and grooving
Material
Grade Hardness HB Cutting speed(m/min)
Carbon steel
Threading
Anneal Alloy steel
Hardened
Application information of threading
Hardened Hardened
High alloy steel
Anneal Hardened Non-alloy
Cast steel
low alloy high alloy Martensite steel 12%Mn
Stainless steel
Austenite Martensite/Ferrite
Malleable cast iron
Gray cast iron
Nodular cast iron
Al alloy
Cast aluminum alloy
Ferrite Pearlite Low tensile-strength High tensile-strength Ferrite Pearlite Non-aging treatment Aging treatment Non-aging treatment Aging treatment Iron Base
Heat resistant alloy Ni- Or Cobase Hardened steel
Anneal Aging Anneal Aging Casting
Hardened steel
Note: •The value in above table is actual range. The high value in the range could be considered when practicing. When try new cutting speed, please check the cutting edge situation before operation. •The higher cutting speed should be used to prevent forming built-up edge when threading stainless steel. •The cutting parameters should be reduced when cutting small pitch threading and using tools with small nose radius. •When cutting threading by tools with small nose radius, such as NPT Standard thread, the tools with big nose radius could be adopted firstly to roughing, it can improve the tool life of tools with small nose radius.
A 300
Threading Tools
Application information of threading
Turning
In-feed way of threading tools
Radial in-feed • Easy operating, high general • V-shape chip caused by long chip steel workpiece will produce big bend stress on cutting edge. • It requires low cutting depth, sharp cutting edge and good tough material. • Big quantity of heat when cutting ,V-shape chip is hard to control • Because the interface of cutting chips on the right and left side is long, so it is easy to cause shaking and make the cutting edge suffer more overloading
Flank in-feed
• Cutting edge suffer small bend stress, stable estate, it is easy for chips formation in deep cutting depth. • There are enough space to leave chips flow when flank in-feed • Big abrasion on right flank
Modified flank in-feed • Right Cutting Edge also engage on cutting depth to a certain extent, it can reduce the abrasion on right side of clearance face. • Cutting edge suffer small bend stress, stable estate, it is easy for chips formation in deep cutting depth. • Good Cutting Performance
Alternate flank in-feed • Cutting edge trade off when machining, equality abrasion on left and right side of clearance face on cutting edge, it can improve the life of tools • Chips are flowing from both of right and left side, good chips flowing • Recommend using in big screw-pitch thread cutting
Recommend adopting flank in-feed or alternate flank in-feed under allowable range of machining equipment or programmer, it can eliminate the machining vibration effectively, and it has enough space discharge the chips between pitch. Cutting edge suffer a small stress, machining stable, it likes the general turning process when machining thread, good chip control without extra chips.
A 301
A
Turning
Threading Tools
Application information of threading
General turning
The common problem in threading and its solution Problem
Parting and grooving
Over wear on clearance face
Threading
Asymmetric wear on left and right cutting edge
Application information of threading
Breakage
Cause
Solutions
Too high of cutting speed
Slow down cutting speed
small ap, frictional wear occurred
Reduce in-feed times and friction times of cutting edge
Inserts is over the centre line
Adopt correct center height
The inclined angle of inserts is different from the helical angle of thread
Change proper shim to get correct inclined angle
Flank in-feed is not correct.
Change the way of flank in-feed
Too low cutting speed
Increase cutting speed
Too big cutting force
Increase in-feed times, and reduce the Max in-feed volume
Cutting under unstable clamping
Check if workpiece shakes Reduce overhang of tool Ensure clamping situation between workpiece and tool
Chip twisting
Increase the pressure of cooling fluid to blow away chips
High cutting speed, high temperature on cutting area
Slow down cutting speed Increase in-feed times and reduce the Max cutting depth
Insufficient cooling fluid
Increase cooling fluid supplying
Too slow cutting speed The insert is over centre line Chips are not under control
Increase cutting speed Adjust centre height Change the operation way of tools to well control chips
Incorrect Centre Height
Adjust centre height
Pitch on machine is incorrect
Correct machine
Shallow profile
The cutting depth was set wrong
Modify cutting depth
Surface damage
Chips involved or contacted
Change to flank in-feed to well control chip flow direction
Caused built-up edge
Temperature of cutting edge is too low Usually occur when machining stainless steel and low carbon steel
Increase cutting speed, pressure and concentration of cooling fluid. Select inserts with good toughness
Crack on surface
Too big cutting force
Reduce the cutting depth of each feed
Incorrect clamping on workpiece or tool
Ensure clamping system between workpiece and tool Minimizes overhang of tool
Incorrect cutting parameters
Increase cutting speed or much slow down cutting speed.
Incorrect tool clamping
Adjust center height
Plastic deformation
Thread surface quality is not good
Incorrect profile
Vibration
A 302