www.martinsprocket.com
AK
Single Groove FHP Sheaves Bored-To-Size
Martin
TYPE A Solid
TYPE B Web
TYPE C Arm / Spoke
Dimensions in inches Part Number
OD
AK15 AK17 AK19 AK20 AK21 AK22 AK23 AK24 AK25 AK26 AK27 AK28 AK30 AK32 AK34 AK35 AK39 AK41 AK44 AK46 AK49 AK51 AK54 AK56 AK59 AK61 AK64 AK66 AK69 AK71 AK74 AK79 AK81 AK84 AK89 AK91 AK94 AK99 AK104 AK109 AK114 AK124 AK134 AK144 AK154 AK184
1.55 1.75 1.95 2.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 3.05 3.25 3.45 3.55 3.75 3.95 4.25 4.45 4.75 4.95 5.25 5.45 5.75 5.95 6.25 6.45 6.75 6.95 7.25 7.75 7.95 8.25 8.75 8.95 9.25 9.75 10.25 10.75 11.25 12.25 13.25 14.25 15.25 18.25
Diameter Datum A(4L) Belts
1.30 1.50 1.70 1.80 1.90 2.00 2.10 2.20 2.30 2.40 2.50 2.60 2.80 3.00 3.20 3.30 3.50 3.70 4.00 4.20 4.50 4.70 5.00 5.20 5.50 5.70 6.00 6.20 6.50 6.70 7.00 7.50 7.70 8.00 8.50 8.70 9.00 9.50 10.00 10.50 11.00 12.00 13.00 14.00 15.00 18.00
Pitch 3L Belts
Type
– 1.16 1.36 1.46 1.56 1.66 1.76 1.86 1.96 2.06 2.16 2.26 2.46 2.66 2.86 2.96 3.16 3.36 3.66 3.86 4.16 4.36 4.66 4.86 5.16 5.36 5.66 5.86 6.16 6.36 6.66 7.16 7.36 7.66 8.16 8.36 8.66 9.16 9.66 10.16 10.66 11.66 12.66 13.66 14.66 17.66
A A A A A A A A B B B B B B B B B B B B B B B B C C C C C C C C C C C C C C C C C C C C C C
, E = 25/32 FOR BORE SIZES <= 1 1/2” Bore - setscrew only - no keyway
1
Stock Finished Bores Includes Keyway and Setscrew
¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂
¹⁄₂ ¹⁄₂
¹⁄₂
¹⁄₂
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈
⁵⁄₈ ⁵⁄₈
⁵⁄₈
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
⁷⁄₈
⁷⁄₈ ⁷⁄₈ – ⁷⁄₈ – – – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – ⁷⁄₈ – – – – – – – – – – – – – – – – – – – –
¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆
¹⁵⁄₁₆
¹⁵⁄₁₆
¹⁵⁄₁₆
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
– – – – – – – – – – – – – – – – – – – – – – – – – – – – –
1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈
1¹⁄₈
– – – – – – – – – – – – – – – – – – – – – – – –
1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆
– 1³⁄₁₆ – – 1³⁄₁₆ – 1³⁄₁₆ – – – 1³⁄₁₆ – – 1³⁄₁₆ – – 1³⁄₁₆ – 1³⁄₁₆ – 1³⁄₁₆ – 1³⁄₁₆ – – 1³⁄₁₆ –
– 1¹⁄₄ – – – – – – 1¹⁄₄ – – 1¹⁄₄ – – – 1¹⁄₄ – – – – –
– – – – – – – – – 1³⁄₈ – 1³⁄₈ – – – 1³⁄₈ – – – –
1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆
F
E
L Thru Bore
²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄
⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ⁷⁄₁₆ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂ ²³⁄₃₂
1³⁄₃₂ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ ¹⁵⁄₁₆ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂
*
*
* *
* *
Weight Lbs. (Approx.)
0.3 0.3 0.5 0.5 0.5 0.6 0.6 0.6 0.7 0.7 0.8 0.8 0.9 1.0 1.1 1.2 1.6 1.6 1.9 2.0 2.1 2.2 2.4 2.5 2.7 2.8 3.0 3.0 3.7 4.3 4.5 4.7 4.7 5.0 5.2 5.2 5.5 5.7 5.9 6.1 6.7 7.3 8.2 8.7 9.7 11.8
Two Groove FHP Sheaves Bored-To-Size
Martin
2AK
Keyway Dimensions Inch Bore Diameter Of Shaft
Keyway Width X Depth
1/2
NONE
5/8 - 7/8
3/16 X 3/32
15/16 - 1-1/4
1/4 X 1/8
1-5/16 - 1-3/8
5/16 X 5/32
1-7/16 - 1-3/4
3/8 X 3/16
TYPE A Solid
TYPE B Web
TYPE C Arm / Spoke
Dimensions in inches Part Number
2AK20 2AK21 2AK22 2AK23 2AK25 2AK26 2AK27 2AK28 2AK30 2AK32 2AK34 2AK39 2AK41 2AK44 2AK46 2AK49 2AK51 2AK54 2AK56 2AK59 2AK61 2AK64 2AK74 2AK84 2AK94 2AK104 2AK114 2AK124 2AK134 2AK144 2AK154 2AK184
Diameter Datum A(4L) OD Belts
2.00 2.15 2.25 2.35 2.55 2.65 2.75 2.85 3.05 3.25 3.45 3.75 3.95 4.25 4.45 4.75 4.95 5.25 5.45 5.75 5.95 6.25 7.25 8.25 9.25 10.25 11.25 12.25 13.25 14.25 15.25 18.25
1.80 1.90 2.00 2.10 2.30 2.40 2.50 2.60 2.80 3.00 3.20 3.50 3.70 4.00 4.20 4.50 4.70 5.00 5.20 5.50 5.70 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 18.00
Pitch 3L Belts
Type
1.46 1.56 1.66 1.76 1.96 2.06 2.16 2.26 2.46 2.66 2.86 3.16 3.36 3.66 3.86 4.16 4.36 4.66 4.86 5.16 5.36 5.66 6.66 7.66 8.66 9.66 10.66 11.66 12.66 13.66 14.66 17.66
A A A A A A A A A A A B B B B B B B B B B C C C C C C C C C C C
Stock Finished Bores Includes Keyway and Setscrew
¹⁄₂ ¹⁄₂ ¹⁄₂
¹⁄₂
-
⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈
⁵⁄₈ ⁵⁄₈
-
³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄
-
⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈
⁷⁄₈ - ¹⁵⁄₁₆ ⁷⁄₈ - ¹⁵⁄₁₆ -
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
-
1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈
-
1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆
-
1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈
1³⁄₈ -
1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆
F
E
L Thru Bore
1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈
¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂
1²¹⁄₃₂ 1²¹⁄₃₂ 1²¹⁄₃₂ 1²¹⁄₃₂ 1²¹⁄₃₂ 1²¹⁄₃₂ 1²¹⁄₃₂ 1²¹⁄₃₂ 1²¹⁄₃₂ 1²¹⁄₃₂ 1²¹⁄₃₂ 1¹¹⁄₃₂ 1¹¹⁄₃₂ 1¹¹⁄₃₂ 1¹¹⁄₃₂ 1¹¹⁄₃₂ 1¹¹⁄₃₂ 1¹¹⁄₃₂ 1¹¹⁄₃₂ 1¹¹⁄₃₂ 1¹¹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂
Weight Lbs. (Approx.)
0.8 0.9 1.1 1.2 1.4 1.5 1.6 1.7 2.0 2.2 2.5 2.6 2.9 3.3 3.6 4.1 4.5 4.1 4.1 4.3 4.5 5.6 6.5 7.2 8.0 9.0 9.7 10.5 12.7 13.1 14.3 17.1
1/2” Bore - setscrew only - no keyway
2
AK-H
Single Groove FHP Sheaves MST速 Bushed
TYPE A Solid
Martin
TYPE B Web
TYPE C Arm / Spoke
Dimensions in inches, weight in pounds Part Number
OD
Diameter Datum A(4L) Belts
AK30-H AK32-H AK34-H AK39-H AK41-H AK44-H AK46-H AK49-H AK51-H AK54-H AK56-H AK59-H AK61-H AK64-H AK66-H AK69-H AK71-H AK74-H AK79-H AK84-H AK89-H AK94-H AK99-H AK104-H AK109-H AK114-H AK124-H AK134-H AK144-H AK154-H AK184-H
3.05 3.25 3.45 3.75 3.95 4.25 4.45 4.75 4.95 5.25 5.45 5.75 5.95 6.25 6.45 6.75 6.95 7.25 7.75 8.25 8.75 9.25 9.75 10.25 10.75 11.25 12.25 13.25 14.25 15.25 18.25
2.80 3.00 3.20 3.50 3.70 4.00 4.20 4.50 4.70 5.00 5.20 5.50 5.70 6.00 6.20 6.50 6.70 7.00 7.50 8.00 8.50 9.00 9.50 10.00 10.50 11.00 12.00 13.00 14.00 15.00 18.00
Weights do not include bushings.
3
Pitch 3L Belts
2.46 2.66 2.86 3.16 3.36 3.66 3.86 4.16 4.36 4.66 4.86 5.16 5.36 5.66 5.86 6.16 6.36 6.66 7.16 7.66 8.16 8.66 9.16 9.66 10.16 10.66 11.66 12.66 13.66 14.66 17.66
Type
A A A A A A A B B B B B C C C C C C C C C C C C C C C C C C C
Bush
Bush Max. Bore
F
E
H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H
1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2
3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4
3/8 3/8 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16
L Thru Bore
1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4
M
7/8 7/8 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16
Weight Less Bush
1.3 1.4 1.2 1.4 1.6 2.0 2.2 2.1 2.3 2.3 2.4 2.5 2.6 2.8 2.8 3.0 3.0 3.3 3.5 3.8 4.0 4.4 4.7 5.0 5.2 5.5 6.0 7.3 7.9 8.9 11.4
Two Groove FHP Sheaves MST® Bushed
Martin
TYPE A Solid
TYPE B Web
2AK-H
TYPE C Arm / Spoke
Dimensions in inches, weight in pounds Part Number
2AK30-H 2AK32-H 2AK34-H 2AK39-H 2AK41-H 2AK44-H 2AK46-H 2AK49-H 2AK51-H 2AK54-H 2AK56-H 2AK59-H 2AK61-H 2AK64-H 2AK74-H 2AK84-H 2AK94-H 2AK104-H 2AK114-H 2AK124-H 2AK134-H 2AK144-H 2AK154-H 2AK184-H
OD
Diameter Datum A(4L) Belts
Pitch 3L Belts
3.05 3.25 3.45 3.75 3.95 4.25 4.45 4.75 4.95 5.25 5.45 5.75 5.95 6.25 7.25 8.25 9.25 10.25 11.25 12.25 13.25 14.25 15.25 18.25
2.80 3.00 3.20 3.50 3.70 4.00 4.20 4.50 4.70 5.00 5.20 5.50 5.70 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 18.00
2.46 2.66 2.86 3.16 3.36 3.66 3.86 4.16 4.36 4.66 4.86 5.16 5.36 5.66 6.66 7.66 8.66 9.66 10.66 11.66 12.66 13.66 14.66 17.66
Type
A A A A B B B B B B B C C C C C C C C C C C C C
Bush
Bush Max. Bore
F
E
H H H H H H H H H H H H H H H H H H H H H H H H
1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2
1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8
1 1 9/16 9/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16
L Thru Bore
M
Weight Less Bush
1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4
7/8 7/8 7/16 7/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16
1.7 1.9 1.7 2.0 2.2 2.7 3.0 3.1 3.5 3.4 3.6 3.4 3.7 3.9 5.0 5.6 6.3 7.6 8.4 9.2 11.5 11.8 13.3 16.9
Weights do not include bushings.
MST “H” Bushings – Inch Bore Diameter Of Shaft 3/8 7/16 1/2 9/16 19/32 5/8 21/32 11/16 3/4 25/32 13/16 7/8 15/16 31/32
Keyway Width X Depth NONE NONE 1/8 X 1/16 1/8 X 1/16 1/8 X 1/16 3/16 X 3/32 3/16 X 3/32 3/16 X 3/32 3/16 X 3/32 3/16 X 3/32 3/16 X 3/32 3/16 X 3/32 1/4 X 1/8 1/4 X 1/8
Diameter Of Shaft 1 1-1/16 1-1/8 1-3/16 1-1/4 1-5/16 1-3/8 1-3/8W 1-7/16 1-1/2
Keyway Width X Depth 1/4 X 1/8 1/4 X 1/8 1/4 X 1/8 1/4 X 1/8 1/4 X 1/8 5/16 X 1/16 5/16 X 1/16 3/8 X 1/16 3/8 X 1/16 3/8 X 1/32
MST “H” Bushings – Millimeter Bore Diameter Of Shaft
Keyway Width X Depth
Diameter Of Shaft
Keyway Width X Depth
10
NONE
22
6 X 2.8
11
NONE
24
8 X 3.3
12
NONE
25
8 X 3.3
14
5 X 2.3
28
8 X 3.3
16
5 X 2.3
30
8 X 3.3
18
6 X 2.8
32
10 X 1.3
19
6 X 2.8
35
10 X 0.3
20
6 X 2.8
36
10 X 1.3
38
10 X 0.3
4
BK
Single Groove FHP Sheaves Bored-To-Size
Martin
TYPE A Solid
TYPE B Web
TYPE C Arm / Spoke
Dimensions in inches Part Number
OD
BK23 BK24 BK25 BK26 BK27 BK28 BK30 BK32 BK34 BK36 BK40 BK45 BK46 BK47 BK48 BK50 BK52 BK55 BK57 BK60 BK62 BK65 BK67 BK70 BK72 BK75 BK77 BK80 BK85 BK90 BK95 BK100 BK105 BK110 BK115 BK120 BK130 BK140 BK160 BK190
2.30 2.40 2.50 2.60 2.70 2.95 3.15 3.35 3.55 3.75 3.95 4.25 4.35 4.45 4.55 4.75 4.95 5.25 5.45 5.75 5.95 6.25 6.45 6.75 6.95 7.25 7.45 7.75 8.25 8.75 9.25 9.75 10.25 10.75 11.25 11.75 12.75 13.75 15.75 18.75
Diameter Datum A(4L) Belts
Datum B(5L) Belts
Type
1.80 1.90 2.00 2.10 2.20 2.40 2.60 2.80 3.00 3.20 3.50 3.60 3.70 3.80 4.00 4.20 4.50 4.70 5.00 5.20 5.50 5.70 6.00 6.20 6.50 6.70 7.00 7.50 8.00 8.50 9.00 9.50 10.00 10.50 11.00 12.00 13.00 15.00 18.00
2.10 2.20 2.30 2.40 2.50 2.60 2.80 3.00 3.20 3.40 3.60 3.90 4.00 4.10 4.20 4.40 4.60 4.90 5.10 5.40 5.60 5.90 6.10 6.40 6.60 6.90 7.10 7.40 7.90 8.40 8.90 9.40 9.90 10.40 10.90 11.40 12.40 13.40 15.40 18.40
A A A A B B B B B B B B B B B B B B B B B B C C C C C C C C C C C C C C C C C C
, E = 13/32 FOR BORE SIZES <= 1 1/2” Bore - setscrew only - no keyway
5
Stock Finished Bores Includes Keyway and Setscrew
¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂
-
⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈
⁵⁄₈
-
³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄ ³⁄₄
-
⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈
⁷⁄₈ ⁷⁄₈ ⁷⁄₈
⁷⁄₈
-
¹⁵⁄₁₆
¹⁵⁄₁₆ ¹⁵⁄₁₆
¹⁵⁄₁₆
¹⁵⁄₁₆
-
F
1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
-
1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈
1¹⁄₈ 1¹⁄₈ 1¹⁄₈ -
1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆
1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ -
1¹⁄₄
1¹⁄₄
1¹⁄₄ 1¹⁄₄
-
1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ -
1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆
¹³⁄₁₆ ¹³⁄₁₆ ¹³⁄₁₆ ¹³⁄₁₆ ¹³⁄₁₆ ¹³⁄₁₆ ¹³⁄₁₆ ¹³⁄₁₆ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈
E
¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ¹³⁄₃₂ ²¹⁄₃₂ * ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂ ²¹⁄₃₂
L Thru Bore
1¹⁄₁₆ 1¹⁄₁₆ 1¹⁄₁₆ 1¹⁄₁₆ 1¹⁄₁₆ 1¹⁄₁₆ 1¹⁄₁₆ 1¹⁄₁₆ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂
Weight Lbs. (Approx.)
0.4 0.4 0.5 0.6 0.6 0.8 0.8 0.8 1.3 1.5 1.5 1.8 1.8 1.8 2.0 2.0 2.0 2.2 2.3 2.3 2.4 2.7 2.8 3.3 3.9 3.9 4.1 4.4 5.0 5.0 5.4 5.6 5.8 6.4 6.9 7.4 8.4 9.4 11.4 13.4
Two Groove FHP Sheaves Bored-To-Size
Martin
2BK
Keyway Dimensions Inch Bore Keyway Width X Depth
Diameter Of Shaft 1/2
NONE
5/8 - 7/8
3/16 X 3/32
15/16 - 1-1/4
1/4 X 1/8
1-5/16 - 1-3/8
5/16 X 5/32
1-7/16 - 1-3/4
3/8 X 3/16
TYPE B Web
TYPE A Solid
TYPE C Arm / Spoke
Dimensions in inches Part Number
OD
Diameter Datum A(4L) Belts
2BK25 2BK26 2BK27 2BK28 2BK30 2BK32 2BK34 2BK36 2BK40 2BK45 2BK47 2BK50 2BK52 2BK55 2BK57 2BK60 2BK62 2BK65 2BK67 2BK70 2BK80 2BK90 2BK100 2BK110 2BK120 2BK130 2BK140 2BK160 2BK190
2.50 2.60 2.70 2.95 3.15 3.35 3.55 3.75 3.95 4.25 4.45 4.75 4.95 5.25 5.45 5.75 5.95 6.25 6.45 6.75 7.75 8.75 9.75 10.75 11.75 12.75 13.75 15.75 18.75
1.90 2.00 2.10 2.20 2.40 2.60 2.80 3.00 3.20 3.50 3.70 4.00 4.20 4.50 4.70 5.00 5.20 5.50 5.70 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 15.00 18.00
Datum B(5L) Belts
Type
2.30 2.40 2.50 2.60 2.80 3.00 3.20 3.40 3.60 3.90 4.10 4.40 4.60 4.90 5.10 5.40 5.60 5.90 6.10 6.40 7.40 8.40 9.40 10.40 11.40 12.40 13.40 15.40 18.40
A A A A A A A A B B B B B B B B B B C C C C C C C C C C C
Stock Finished Bores Includes Keyway and Setscrew
¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂
– – – – –
⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈ ⁵⁄₈
– – – – – – – – –
³⁄₄ – – ³⁄₄ – ³⁄₄ – ³⁄₄ – – ³⁄₄ – ³⁄₄ – ³⁄₄ – – – ³⁄₄ – – – – ³⁄₄ – – – – ³⁄₄ – ³⁄₄ – ³⁄₄ – ³⁄₄ –
⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈
⁷⁄₈
– – – – – – – – – – – – – – – – – – – – – –
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
– – – – – – – – – – – – – – – – – – – – – – – – – – – –
1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 1¹⁄₈
– – – – – – – – – – – – – – – – – – – – – –
1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆ 1³⁄₁₆
– – – – – – – – – – – – – – – – – – – – – –
1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈ 1³⁄₈
– – – – – – – – – –
1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆ 1⁷⁄₁₆
F
E
L Thru Bore
1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄ 1³⁄₄
¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹⁵⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂ ¹¹⁄₃₂
1³¹⁄₃₂ 1³¹⁄₃₂ 1³¹⁄₃₂ 1³¹⁄₃₂ 1³¹⁄₃₂ 1³¹⁄₃₂ 1³¹⁄₃₂ 1³¹⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁵⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂ 1¹⁹⁄₃₂
Weight Lbs. (Approx.)
1.3 1.5 1.6 1.9 2.3 2.6 2.8 3.3 3.3 3.3 3.7 4.1 4.5 4.5 5.1 4.9 4.8 5.0 5.0 6.6 7.2 8.4 9.4 10.4 11.8 14.9 16.3 18.0 23.3
1/2” Bore - setscrew only - no keyway
6
BK-H
Single Groove FHP Sheaves MST速 Bushed
TYPE A Solid
Martin
TYPE B Web
TYPE C Arm / Spoke
Dimensions in inches, weight in pounds Part Number
BK30-H BK32-H BK34-H BK36-H BK40-H BK45-H BK47-H BK50-H BK52-H BK55-H BK57-H BK60-H BK62-H BK65-H BK67-H BK70-H BK72-H BK75-H BK77-H BK80-H BK85-H BK90-H BK95-H BK100-H BK105-H BK110-H BK115-H BK120-H BK130-H BK140-H BK150-H BK160-H BK190-H
OD
Diameter Datum A(4L) Belts
Datum B(5L) Belts
Type
3.15 3.35 3.55 3.75 3.95 4.25 4.45 4.75 4.95 5.25 5.45 5.75 5.95 6.25 6.45 6.75 6.95 7.25 7.45 7.75 8.25 8.75 9.25 9.75 10.25 10.75 11.25 11.75 12.75 13.75 14.75 15.75 18.75
2.40 2.60 2.80 3.00 3.20 3.50 3.70 4.00 4.20 4.50 4.70 5.00 5.20 5.50 5.70 6.00 6.20 6.50 6.70 7.00 7.50 8.00 8.50 9.00 9.50 10.00 10.50 11.00 12.00 13.00 14.00 15.00 18.00
2.80 3.00 3.20 3.40 3.60 3.90 4.10 4.40 4.60 4.90 5.10 5.40 5.60 5.90 6.10 6.40 6.60 6.90 7.10 7.40 7.90 8.40 8.90 9.40 9.90 10.40 10.90 11.40 12.40 13.40 14.40 15.40 18.40
A A A B B B B B B B B B B B B C C C C C C C C C C C C C C C C C C
Weights do not include bushings.
7
Bush
Bush Max. Bore
H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H
1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2
F
7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8
E
1/2 1/2 1/2 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8
L Thru Bore
M
Weight Less Bush
1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4
7/8 7/8 7/8 7/16 7/16 7/16 7/16 7/16 7/16 7/16 7/16 7/16 7/16 7/16 7/16 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2
1.3 1.5 1.7 1.3 1.5 1.9 2.2 2.2 2.5 3.0 3.2 3.2 3.6 4.0 4.2 3.3 3.6 3.4 3.7 4.0 4.1 4.5 4.8 5.1 5.4 6.0 6.3 6.6 7.2 8.6 9.4 10.1 12.3
Two Groove FHP Sheaves MST® Bushed
Martin
TYPE A Solid
TYPE B Web
2BK-H
TYPE C Arm / Spoke
Dimensions in inches, weight in pounds
Part Number
OD
Diameter Datum A(4L) Belts
2BK32-H 2BK34-H 2BK36-H 2BK40-H 2BK45-H 2BK47-H 2BK50-H 2BK52-H 2BK55-H 2BK57-H 2BK60-H 2BK62-H 2BK65-H 2BK67-H 2BK70-H 2BK72-H 2BK80-H 2BK90-H 2BK100-H 2BK110-H 2BK120-H 2BK130-H 2BK140-H 2BK160-H 2BK190-H
3.35 3.55 3.75 3.95 4.25 4.45 4.75 4.95 5.25 5.45 5.75 5.95 6.25 6.45 6.75 6.95 7.75 8.75 9.75 10.75 11.75 12.75 13.75 15.75 18.75
2.60 2.80 3.00 3.20 3.50 3.70 4.00 4.20 4.50 4.70 5.00 5.20 5.50 5.70 6.00 6.20 7.00 8.00 9.00 10.00 11.00 12.00 13.00 15.00 18.00
Datum B(5L) Belts 3.00 3.20 3.40 3.60 3.90 4.10 4.40 4.60 4.90 5.10 5.40 5.60 5.90 6.10 6.40 6.60 7.40 8.40 9.40 10.40 11.40 12.40 13.40 15.40 18.40
Type A A A A A B B B B B B B C C C C C C C C C C C C C
Bush H H H H H H H H H H H H H H H H H H H H H H H H H
Bush Max. Bore 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2
F 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4
E 1 3/8 1 3/8 15/16 15/16 15/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 5/16 5/16 5/16 5/16 5/16 5/16 5/16 5/16 5/16 5/16 5/16 5/16 5/16
L Thru Bore
M
Weight Less Bush
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
7/8 7/8 7/16 7/16 7/16 7/16 7/16 7/16 7/16 7/16 7/16 7/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16
2.2 2.6 2.4 2.6 3.1 3.2 3.7 4.1 4.2 4.5 4.9 5.2 5.7 5.8 6.1 6.1 7.4 8.5 9.7 10.9 12.0 13.4 15.3 17.8 22.8
1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4
Weights do not include bushings.
MST “H” Bushings – Inch Bore Diameter Of Shaft 3/8 7/16 1/2 9/16 19/32 5/8 21/32 11/16 3/4 25/32 13/16 7/8 15/16 31/32
Keyway Width X Depth NONE NONE 1/8 X 1/16 1/8 X 1/16 1/8 X 1/16 3/16 X 3/32 3/16 X 3/32 3/16 X 3/32 3/16 X 3/32 3/16 X 3/32 3/16 X 3/32 3/16 X 3/32 1/4 X 1/8 1/4 X 1/8
Diameter Of Shaft 1 1-1/16 1-1/8 1-3/16 1-1/4 1-5/16 1-3/8 1-3/8W 1-7/16 1-1/2
Keyway Width X Depth 1/4 X 1/8 1/4 X 1/8 1/4 X 1/8 1/4 X 1/8 1/4 X 1/8 5/16 X 1/16 5/16 X 1/16 3/8 X 1/16 3/8 X 1/16 3/8 X 1/32
MST “H” Bushings – Millimeter Bore Diameter Of Shaft
Keyway Width X Depth
Diameter Of Shaft
Keyway Width X Depth
10
NONE
22
6 X 2.8
11
NONE
24
8 X 3.3
12
NONE
25
8 X 3.3
14
5 X 2.3
28
8 X 3.3
16
5 X 2.3
30
8 X 3.3
18
6 X 2.8
32
10 X 1.3
19
6 X 2.8
35
10 X 0.3
20
6 X 2.8
36
10 X 1.3
38
10 X 0.3
8
1VP
Single Groove Variable Pitch Sheaves – Bored-To-Size
Martin
TYPE A
TYPE B
Dimensions in inches Diameters And Turns 3L Belts Part Number 1VP25 1VP30 1VP34 1VP40 1VP44 1VP50 1VP56 1VP60 1VP62 1VP65 1VP68 1VP71 1VP75
A or 4L Belts
Min. Pitch
Turns Open
Max. Pitch
Turns Open
Min. Datum
1.6 1.8 1.9 2.4 2.8 3.4 4.0 4.6 5.2 -
4 4 4 4 4 4 4 4 4 -
2.4 2.7 2.8 3.2 3.7 4.2 4.8 5.4 6.0 -
0 0 0 0 0 0 0 0 0 -
2.0 2.5 2.9 3.5 4.1 4.2 4.7 4.7 5.3 5.3 5.7
Turns Open 5 5 5 5 5 5 5 5 5 5 5
Max. Datum
B or 5L Belts
5V Belts
Turns Open
Min. Datum
Turns Open
Max. Datum
Turns Open
Min. Pitch
Turns Open
Max. Pitch
Turns Open
0 0 0 0 0 0 0 0 0 0 0
2.3 2.6 3.0 3.6 4.2 4.4 4.8 4.9 5.4 5.5 5.9
5 6 6 6 6 6 6 6 6 6 6
3.2 3.6 4.0 4.6 5.2 5.6 5.8 6.1 6.4 6.7 7.1
1 1 1 1 1 0 1 0 1 0 0
5.1 5.1 5.7 5.7 6.1
6 6 6 6 6
6.1 6.3 6.7 6.9 7.3
1 0 1 0 0
3.0 3.5 3.9 4.5 5.1 5.2 5.7 5.7 6.3 6.3 6.7
Dimensions in inches Part Number
OD
Type
L Thru Bore
1VP25 1VP30 1VP34 1VP40 1VP44 1VP44 1VP50 1VP50 1VP56 1VP56 1VP60 1VP62 1VP65 1VP68 1VP71 1VP75
2.50 2.87 3.15 3.75 4.15 4.15 4.75 4.75 5.35 5.35 6.00 5.95 6.50 6.55 7.10 7.50
A A A A A B A B A B B B B B B B
1-23/32 1-11/16 1-29/32 1-7/8 1-7/8 2-3/16 2 2-5/32 1-15/16 2-5/32 2-7/32 1-29/32 2-7/32 1-29/32 2-7/32 2-7/32
1/2” Bore - setscrew only - no keyway
9
Wt. Lbs. (Approx.)
Stock Finished Bores Includes Keyway and Setscrew 1/2 1/2 1/2 1/2 1/2
-
5/8 5/8 5/8 5/8 5/8
-
3/4 3/4 3/4 3/4 3/4
1/2
-
5/8
-
3/4
1/2
-
5/8
-
3/4
5/8 5/8
-
3/4 3/4 3/4 3/4 3/4 3/4
5/8
-
-
7/8 7/8 7/8
-
1
-
1-1/8
7/8
-
1
-
1-1/8
7/8 7/8 7/8 7/8 7/8 7/8 7/8
-
1 1 1
-
1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8
1 1
-
1-1/4 1-1/4
-
1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8
0.8 1.1 1.4 1.7 2.4 3.0 2.7 3.5 4.1 4.4 6.3 6.1 7.1 7.3 8.2 9.0
Two Groove Variable Pitch Sheaves – Bored-To-Size
Martin
2VP
Keyway Dimensions Inch Bore Diameter Of Shaft
Keyway Width X Depth
1/2
NONE
5/8 - 7/8
3/16 X 3/32
15/16 - 1-1/4
1/4 X 1/8
1-5/16 - 1-3/8
5/16 X 5/32
1-7/16 - 1-3/4
3/8 X 3/16
TYPE A
TYPE B
Dimensions in inches Diameters And Turns 3L Belts Part Number 2VP36 2VP42 2VP50 2VP56 2VP60 2VP62 2VP65 2VP68 2VP71 2VP75
A or 4L Belts
Min. Pitch
Turns Open
Max. Pitch
Turns Open
Min. Datum
2.0 2.6 3.4 4.0 4.6 5.2 -
4 4 4 4 4 4 -
2.8 3.4 4.2 4.8 5.4 6.0 -
0 0 0 0 0 0 -
2.1 2.7 3.5 4.1 4.2 4.7 4.7 5.3 5.3 5.7
Turns Open 5 5 5 5 5 5 5 5 5 5
Max. Datum
B or 5L Belts
5V Belts
Turns Open
Min. Datum
Turns Open
Max. Datum
Turns Open
Min. Pitch
Turns Open
Max. Pitch
Turns Open
0 0 0 0 0 0 0 0 0 0
2.4 2.8 3.6 4.2 4.4 4.8 4.9 5.4 5.5 5.9
5 6 6 6 6 6 6 6 6 6
3.2 3.8 4.6 5.2 5.6 5.8 6.1 6.4 6.7 7.1
1 1 1 1 0 1 0 1 0 0
5.1 5.1 5.7 5.7 6.1
6 6 6 6 6
6.1 6.3 6.7 6.9 7.3
1 0 1 0 0
3.1 3.7 4.5 5.1 5.2 5.7 5.7 6.3 6.3 6.7
Dimensions in inches Part Number 2VP36 2VP42 2VP50 2VP56 2VP60 2VP62 2VP65 2VP68 2VP71 2VP75
OD
Type
L Thru Bore
3.35 3.95 4.75 5.35 6.00 5.95 6.50 6.55 7.10 7.50
A A B B B B B B B B
3 3 3 3 3-1/4 3 3-1/4 3 3-1/4 3-1/4
Wt. Lbs. (Approx.)
Stock Finished Bores Includes Keyway and Setscrew 1/2
-
5/8 5/8 5/8 5/8
-
3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4
-
7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8
-
1 1 1 1 1 1 1 1
-
1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8
-
1-1/4
-
1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8
3.6 4.5 6.1 7.5 10.9 10.0 12.5 11.7 14.7 16.3
1/2” Bore - setscrew only - no keyway
10
INVENTORY: Martin delivers with incredible fill rates from one of its many facilities strategically located across North America.
SERVICE: Martin ships rebores and other alterations within hours - not days... MTO’s in days - not weeks.
PEOPLE: When you call Martin you get a person, not voice mail. We are ready, able and willing to help...Now!
Charlotte, NC
Wayne, NJ
General Offices Sales and Manufacturing
3901 Scott Futrell Drive Charlotte, NC 28208-3539 704-394-9111 (FAX 704-394-9122)
7 High Point Drive Wayne, NJ 07470-7432 973-633-5700 (FAX 973-633-7196)
Arlington, TX
Chicago, IL
3100 Sprocket Drive 76015-2898 P.O. Box 91588 Arlington, Texas 76015-0088 817-258-3000 (FAX 817-258-3333)
1505 Birchwood Avenue Des Plaines, IL 60018-3001 847-298-8844 (FAX 847-298-2967)
Denver, CO
Sales and Manufacturing
Dallas, TX
10800 East 54th Avenue Denver CO 80239 303-371-8466 (FAX 303-371-7116)
Mansfield, TX
USA
Danielsville, PA 3376 Delps Road 18038 P.O. Box 267 • Danielsville, PA 18038-0267 610-837-1841 (FAX 610-837-7337)
Ft. Worth, TX (Conveyor & Tool Divisions)
3600 McCart Ave. Ft. Worth, TX 76110-4692 817-258-3000 (FAX 817-258-3173)
Montpelier, OH 350 S. Airport Road Montpelier, OH 43543-9329 419-485-5515 (FAX 419-485-3565)
Sacramento, CA 1199 Vine Street Sacramento, CA 95814-0426 916-441-7172 (FAX 916-441-4600)
Scottdale, GA 3303 Church Street 30079-1395 P.O. Box 886 • Scottdale, GA 30079-0886 404-292-8744 (FAX 404-292-7771)
Mini Manufacturing Centers Boston, MA 357 Fortune Boulevard Milford, MA 01757 508-634-3990 (FAX 508-634-3998)
Detroit, MI 12555 Belden Ct. Livonia, MI 48150 734-367-0238 (FAX 734-367-0547)
Houston, TX 9910 Bent Oak Drive Houston, TX 77040 713-849-4330 (FAX 713-849-4807)
Kansas City, MO 1520 N. Commerce Avenue Kansas City, MO 64120-4961 816-231-5575 (FAX 816-231-1959)
Manufacturing Only Abilene, TX Clarksville, TX
Paragould, AR (Includes the Plastics Div.)
CANADA Sales and Manufacturing
Martin Sprocket & Gear Canada Inc. 896 Meyerside Drive Mississauga, Ontario, Canada L5T 1R9 905-670-1991 (FAX 905-670-2110)
Martin Sprocket & Gear Canada Inc. (Conveyor Division) 1030 Industrial Road Ayr, Ontario, Canada NOB 1EO 519-621-0546 (FAX 519-621-4413)
Los Angeles, CA 5920 S. Triangle Drive Commerce, CA 90040-3639 323-728-8117 (FAX 323-722-7526)
Minneapolis, MN 10601 Hampshire Avenue South Bloomington, MN 55438-2395 952-829-0623 (FAX 952-944-9385)
Portland, OR 3030 N.W. Industrial Portland, OR 97210-1734 503-223-7261 (FAX 503-221-0203)
MEXICO Sales and Manufacturing
Martin Sprocket & Gear de Mexico, S.A. de C.V. Km 52 Carretera, Naucalpan-Toluca Calle 3, Manzana VII, Lote 11 Parque Industrial Toluca 2000 Toluca, Edo. de México 50200 +52 722 276 0800 (Fax: +52 722 276 0801)
Tampa, FL 3201 Queen Palm Drive Tampa FL 33619 813-623-1705 (FAX 813-626-8953)
“Where dependability is a tradition...and exceptional service is nothing new!”
Martin SPROCKET & GEAR, INC. • 3100 SPROCKET DR. • ARLINGTON, TX 76015 • 817-258-3000 For more information, contact your nearest COPYRIGHT 2006 •
Martin SPROCKET & GEAR, INC. • ALL RIGHTS RESERVED 735 PTB-FHPS 0106
Martin
Distributor or Service Center.