Adjustable-Pitch V-Belt Pulleys
1 Groove
2 Grooves
Increase efficiency, vary speed, and extend the life of your drive by changing the pitch on these pulleys. Turn the sides of the pulley on the threaded hub to increase or decrease the pitch.
For technical drawings and 3-D models, click on a part number.
For 3L, 4L, A, AX and 5L, B, BX Belts
1 Groove
2 Grooves
Keyway | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Grooves | For Shaft Dia. | Pitch Dia. (For Belt Trade Size) | Wd. | O'all Wd. | Wd. | Dp. | Material | Body Type | Includes | Each | |
3.15" OD | |||||||||||
| 1 | 1/2" | 1.7"-2.5" (3L), 1.9"-2.9" (4L, A, AX), 2.4"-3.2" (5L, B, BX) | 21/32"-31/32" | 1 7/8" | __ | __ | Cast Iron | Solid | One Set Screw | 00000000 | 000000 |
| 1 | 5/8" | 1.7"-2.5" (3L), 1.9"-2.9" (4L, A, AX), 2.4"-3.2" (5L, B, BX) | 21/32"-31/32" | 1 7/8" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 3/4" | 1.7"-2.5" (3L), 1.9"-2.9" (4L, A, AX), 2.4"-3.2" (5L, B, BX) | 21/32"-31/32" | 1 7/8" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 7/8" | 1.7"-2.5" (3L), 1.9"-2.9" (4L, A, AX), 2.4"-3.2" (5L, B, BX) | 21/32"-31/32" | 1 7/8" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
3.35" OD | |||||||||||
| 2 | 1/2" | 1.9"-2.7" (3L), 2"-3" (4L, A, AX), 2.5"-3.3" (5L, B, BX) | 1 3/8"-2" | 3" | __ | __ | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 5/8" | 1.9"-2.7" (3L), 2"-3" (4L, A, AX), 2.5"-3.3" (5L, B, BX) | 1 3/8"-2" | 3" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 3/4" | 1.9"-2.7" (3L), 2"-3" (4L, A, AX), 2.5"-3.3" (5L, B, BX) | 1 3/8"-2" | 3" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 7/8" | 1.9"-2.7" (3L), 2"-3" (4L, A, AX), 2.5"-3.3" (5L, B, BX) | 1 3/8"-2" | 3" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
3.75" OD | |||||||||||
| 1 | 1/2" | 2.3"-3.1" (3L), 2.4"-3.4" (4L, A, AX), 2.7"-3.7" (5L, B, BX) | 21/32"-1 1/32" | 1 7/8" | __ | __ | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 5/8" | 2.3"-3.1" (3L), 2.4"-3.4" (4L, A, AX), 2.7"-3.7" (5L, B, BX) | 21/32"-1 1/32" | 1 7/8" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 3/4" | 2.3"-3.1" (3L), 2.4"-3.4" (4L, A, AX), 2.7"-3.7" (5L, B, BX) | 21/32"-1 1/32" | 1 7/8" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 7/8" | 2.3"-3.1" (3L), 2.4"-3.4" (4L, A, AX), 2.7"-3.7" (5L, B, BX) | 21/32"-1 1/32" | 1 7/8" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 1" | 2.7"-3.5" (3L), 2.9"-3.9" (4L, A, AX), 3"-4" (5L, B, BX) | 9/16"-1" | 1 3/4" | 1/4" | 1/8" | Cast Iron | Solid | Two Set Screws | 00000000 | 00000 |
3.95" OD | |||||||||||
| 2 | 1/2" | 2.5"-3.3" (3L), 2.6"-3.6" (4L, A, AX), 2.9"-3.9" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | __ | __ | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 5/8" | 2.5"-3.3" (3L), 2.6"-3.6" (4L, A, AX), 2.9"-3.9" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 3/4" | 2.5"-3.3" (3L), 2.6"-3.6" (4L, A, AX), 2.9"-3.9" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 7/8" | 2.5"-3.3" (3L), 2.6"-3.6" (4L, A, AX), 2.9"-3.9" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 1 1/8" | 2.5"-3.3" (3L), 2.6"-3.6" (4L, A, AX), 2.9"-3.9" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
4.15" OD | |||||||||||
| 1 | 1/2" | 2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX) | 21/32"-1 1/32" | 1 7/8" | __ | __ | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 5/8" | 2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX) | 21/32"-1 1/32" | 1 7/8" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 3/4" | 2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX) | 21/32"-1 1/32" | 1 7/8" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 7/8" | 2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX) | 3/4"-1 1/8" | 2 5/32" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 1" | 2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX) | 3/4"-1 1/8" | 2 5/32" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 1 1/8" | 2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX) | 3/4"-1 1/8" | 2 5/32" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
4.75" OD | |||||||||||
| 1 | 1/2" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 11/16"-1 1/16" | 1 15/16" | __ | __ | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 5/8" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 11/16"-1 1/16" | 1 15/16" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 3/4" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 11/16"-1 1/16" | 1 15/16" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 00000 |
| 1 | 7/8" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 3/4"-1 1/8" | 2 5/32" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 000000 |
| 1 | 1" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 3/4"-1 1/8" | 2 5/32" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 00000000 | 000000 |
| 1 | 1 1/8" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 3/4"-1 1/8" | 2 5/32" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 00000000 | 000000 |
| 2 | 1/2" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | __ | __ | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 5/8" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 3/4" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 7/8" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 1" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | __ | __ | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 1 1/8" | 3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
5.35" OD | |||||||||||
| 1 | 7/8" | 3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX) | 3/4"-1 1/8" | 2 5/32" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 000000 |
| 1 | 1" | 3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX) | 3/4"-1 1/8" | 2 5/32" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 00000000 | 000000 |
| 1 | 1 1/8" | 3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX) | 3/4"-1 1/8" | 2 5/32" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 00000000 | 000000 |
| 2 | 7/8" | 3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 1" | 3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 1 1/8" | 3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX) | 1 3/8"-2 1/8" | 3" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
For 4L, A, AX and 5L, B, BX Belts
2 Grooves
1 Groove
Keyway | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Grooves | For Shaft Dia. | Pitch Dia. (For Belt Trade Size) | Wd. | O'all Wd. | Wd. | Dp. | Material | Body Type | Includes | Each | |
5.95" OD | |||||||||||
| 2 | 3/4" | 4.2"-5.2" (4L, A, AX), 4.5"-5.5" (5L, B, BX) | 1 5/8"-2 3/8" | 3 1/4" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 0000000 |
| 2 | 1" | 4.2"-5.2" (4L, A, AX), 4.5"-5.5" (5L, B, BX) | 1 5/8"-2 3/8" | 3 1/4" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 1 1/8" | 4.2"-5.2" (4L, A, AX), 4.5"-5.5" (5L, B, BX) | 1 5/8"-2 3/8" | 3 1/4" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 1 1/4" | 4.2"-5.2" (4L, A, AX), 4.5"-5.5" (5L, B, BX) | 1 5/8"-2 3/8" | 3 1/4" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 2 | 1 3/8" | 4.2"-5.2" (4L, A, AX), 4.5"-5.5" (5L, B, BX) | 1 5/8"-2 3/8" | 3 1/4" | 5/16" | 5/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
6.5" OD | |||||||||||
| 1 | 3/4" | 4.7"-5.7" (4L, A, AX), 4.8"-6" (5L, B, BX) | 7/8"-1 1/4" | 2 7/32" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 000000 |
| 1 | 7/8" | 4.7"-5.7" (4L, A, AX), 4.8"-6" (5L, B, BX) | 7/8"-1 1/4" | 2 7/32" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 00000000 | 000000 |
| 1 | 1 1/8" | 4.7"-5.7" (4L, A, AX), 4.8"-6" (5L, B, BX) | 7/8"-1 1/4" | 2 7/32" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 00000000 | 000000 |
Adjustable-Speed V-Belt Pulleys
3 Grooves
4 Grooves
Also known as step-cone pulleys, these have multiple groove sizes so you can quickly change rotation speed by moving your belt to a different groove. Use with fractional-horsepower motors for drives with frequent speed changes.
For technical drawings and 3-D models, click on a part number.
Keyway | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Grooves | OD (Pitch Dia.) | For Shaft Dia. | Wd. | Groove Dp. | Wd. | Dp. | Material | Body Type | Includes | Each | |
For 4L, A Belts | |||||||||||
| 3 | 2" (1 3/4"), 3" (2 3/4"), 4" (3 3/4") | 1/2" | 1 7/8" | 0.5" | __ | __ | Zinc | Solid | One Set Screw | 0000000 | 000000 |
| 3 | 2" (1 3/4"), 3" (2 3/4"), 4" (3 3/4") | 5/8" | 1 7/8" | 0.5" | 3/16" | 3/32" | Zinc | Solid | One Set Screw | 0000000 | 00000 |
| 3 | 2" (1 3/4"), 3" (2 3/4"), 4" (3 3/4") | 3/4" | 1 7/8" | 0.5" | 3/16" | 3/32" | Zinc | Solid | One Set Screw | 0000000 | 00000 |
| 3 | 3" (2 3/4"), 3 1/2" (3 1/4"), 4" (3 3/4") | 1/2" | 1 3/4" | 0.5" | __ | __ | Zinc | Solid | One Set Screw | 0000000 | 00000 |
| 4 | 2" (1 3/4"), 2 1/2" (2 1/4"), 3 1/2" (3 1/4"), 4" (3 3/4") | 1/2" | 2 1/2" | 0.5" | __ | __ | Zinc | Solid | One Set Screw | 0000000 | 00000 |
| 4 | 2" (1 3/4"), 2 1/2" (2 1/4"), 3 1/2" (3 1/4"), 4" (3 3/4") | 5/8" | 2 1/2" | 0.5" | 3/16" | 3/32" | Zinc | Solid | One Set Screw | 0000000 | 00000 |
| 4 | 2" (1 3/4"), 2 1/2" (2 1/4"), 3 1/2" (3 1/4"), 4" (3 3/4") | 3/4" | 2 1/2" | 0.5" | 3/16" | 3/32" | Zinc | Solid | One Set Screw | 0000000 | 00000 |