Hub-Mount Screw-Clamp Bushings
Transfer torque directly from a shaft to a hub. These bushings install over your hub to mount a sprocket, pulley, or gear to a shaft at the same time. Common in industrial gearbox applications, they can also connect a hollow shaft over a solid shaft. As screw-clamp bushings, they're good for shock loads. When you tighten the included clamping screws, the outer rings compress against a sprocket, pulley, or gear in between them, causing the inner rings to tighten around the shaft.
For technical drawings and 3-D models, click on a part number.
| For Shaft Dia. | OD | Overall Wd. | Max. Torque, in.-lbs. | Fastener Tightening Torque, in.-lbs. | Material | Each | |
| 3 1/8" | 5 11/16" | 1 7/16" | 40,950 | 260 | Zinc-Plated Steel | 0000000 | 0000000 |
H Series Quick-Disconnect Timing Belt Pulleys
Move heavy loads without slippage—pulleys mount with quick-disconnect (QD) bushings (sold separately) for a more secure grip on the shaft than set screws. Bushing is not included. Pulleys are H series (heavy) and have trapezoidal teeth. Select a pulley with a maximum belt width that’s the same or larger than your timing belt width.
For technical drawings and 3-D models, click on a part number.
| OD | Number of Teeth | Pitch | ID | Bore Type | For Bushing Style | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Number of Flanges | Fabrication | Material | Each | |
For 1" Max. Belt Wd. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 9.52" | 60 | 0.500" | 3.125" | Finished | Quick Disconnect Style SF | __ | 1.313" | 1.313" | 9.549" | __ | Cast | Iron | 00000000 | 0000000 |
| 19.09" | 120 | 0.500" | 3.125" | Finished | Quick Disconnect Style SF | __ | 1.313" | 1.313" | 19.099" | __ | Cast | Iron | 00000000 | 000000 |
For 1 1/2" Max. Belt Wd. | ||||||||||||||
| 9.52" | 60 | 0.500" | 3.125" | Finished | Quick Disconnect Style SF | __ | 1.813" | 1.813" | 9.549" | __ | Cast | Iron | 00000000 | 000000 |
| 19.09" | 120 | 0.500" | 3.125" | Finished | Quick Disconnect Style SF | __ | 1.813" | 1.813" | 19.099" | __ | Cast | Iron | 00000000 | 000000 |
For 2" Max. Belt Wd. | ||||||||||||||
| 8.016" | 48 | 0.500" | 3.125" | Finished | Quick Disconnect Style SF | 2.094" | 2.344" | 2.344" | 7.639" | 2 | Machined | Black-Oxide Iron | 00000000 | 000000 |
| 9.495" | 60 | 0.500" | 3.125" | Finished | Quick Disconnect Style SF | __ | 2.344" | 2.344" | 9.549" | __ | Cast | Black-Oxide Iron | 00000000 | 000000 |
XH Series Quick-Disconnect Timing Belt Pulleys
Securely carry heavy loads—these pulleys mount with quick-disconnect (QD) bushings (not included) for a better grip on the shaft than set screws and press-fit pulleys. They are XH (extra heavy series) with trapezoidal teeth. Made from iron, these pulleys are strong and resist wear. A black-oxide coating protects them from corrosion in dry environments.
For technical drawings and 3-D models, click on a part number.
| OD | Number of Teeth | Pitch | ID | Bore Type | For Bushing Style | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Number of Flanges | Fabrication | Material | Each | |
For 2" Max. Belt Wd. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7.25" | 24 | 0.875" | 3.125" | Finished | Quick Disconnect Style SF | 2.187" | 2.563" | 2.563" | 6.685" | 2 | Machined | Black-Oxide Iron | 0000000 | 0000000 |
| 7.75" | 26 | 0.875" | 3.125" | Finished | Quick Disconnect Style SF | 2.25" | 2.592" | 2.592" | 7.241" | 2 | Machined | Black-Oxide Iron | 0000000 | 000000 |
For 3" Max. Belt Wd. | ||||||||||||||
| 7.25" | 24 | 0.875" | 3.125" | Finished | Quick Disconnect Style SF | 3.25" | 3 5/8" | 3 5/8" | 6.685" | 2 | Machined | Black-Oxide Iron | 0000000 | 000000 |
| 7.75" | 26 | 0.875" | 3.125" | Finished | Quick Disconnect Style SF | 3.312" | 3.655" | 3.655" | 7.241" | 2 | Machined | Black-Oxide Iron | 0000000 | 000000 |
For 4" Max. Belt Wd. | ||||||||||||||
| 7.25" | 24 | 0.875" | 3.125" | Finished | Quick Disconnect Style SF | 4.312" | 4.688" | 4.688" | 6.685" | 2 | Machined | Black-Oxide Iron | 0000000 | 000000 |
| 7.75" | 26 | 0.875" | 3.125" | Finished | Quick Disconnect Style SF | 4.437" | 4.717" | 4.717" | 7.241" | 2 | Machined | Black-Oxide Iron | 0000000 | 000000 |