For Shaft Diameter For Shaft Diameter | Show |
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For Shaft Diameter For Shaft Diameter | Hide |
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Construction Construction |
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For Motion Type For Motion Type |
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Set Screw Material Set Screw Material |
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Shaft Coupling Type Shaft Coupling Type |
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Number of Set Screws Included Number of SetScrews Included |
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Set Screw Type Set Screw Type |
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Component Component |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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Angular Misalignment Capability Angular MisalignmentCapability |
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Axial Misalignment Capability Axial Misalignment Capability |
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Clamping Screw Finish Clamping Screw Finish |
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Clamping Screw Material Clamping Screw Material |
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Clamping Screw Type Clamping Screw Type |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Shaft Couplings
More
Clamping Precision Flexible Shaft Couplings
Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft. Tighten the clamping screws to secure.
Spiral couplings have long cuts in their body for flexibility to handle parallel, axial, and angular misalignment better than parallel couplings. However, they’re not as rigid. Often used for light duty encoder and stepper drive applications, they allow zero backlash (no play) and never need lubrication. They’re also known as helical beam couplings.
Aluminum couplings are lightweight with good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Misalignment Capability | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Overall Lg. | OD | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Axial | For Motion Type | Each | |
Spiral Cut | ||||||||||
7075 Aluminum | ||||||||||
| 11/16" × 5/16" | 2 1/2" | 1 5/8" | 10,000 | 215 | 0.015" | 5° | 0.01" | Forward/Reverse, Start/Stop | 00000000 | 0000000 |
| 11/16" × 3/8" | 2 1/2" | 1 5/8" | 10,000 | 215 | 0.015" | 5° | 0.01" | Forward/Reverse, Start/Stop | 00000000 | 000000 |
| 11/16" × 3/4" | 2 3/4" | 1 3/4" | 10,000 | 250 | 0.015" | 5° | 0.01" | Forward/Reverse, Start/Stop | 00000000 | 000000 |
Set Screw Flexible Shaft Couplings
Each hub includes a set screw (unless noted), which bites into your shaft to hold the coupling in place. Also known as Lovejoy® couplings, these three-piece couplings have a spider-shaped cushion between two hubs to reduce shock and handle minor shaft misalignment.
A complete coupling consists of two hubs and one spider, or two hubs, one split spider, and one retaining ring (all components sold separately). Split spiders are easier to install and replace than standard spiders because there’s no need for tools or removing your hubs. Twist-lock them in place using a retaining ring.
Buna-N spiders provide good vibration damping and chemical resistance. Hytrel spiders provide fair vibration damping and excellent chemical resistance. Polyurethane spiders and split spiders provide fair vibration damping and good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Buna-N Rubber Spiders | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | ||||||||||||
| Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 1 63/64" | 1 23/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 000000 | 14,000 | 43 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
| 2 1/8" | 1 3/4" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 11,000 | 90 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
| 2 5/32" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
| 2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
| 2 27/32" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
| 3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
| 4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 5,000 | 790 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
Hytrel Rubber Spiders | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | ||||||||||||
| Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 1 63/64" | 1 23/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 000000 | 3,600 | 110 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
| 2 1/8" | 1 3/4" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 3,600 | 225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
| 2 5/32" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
| 2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
| 2 27/32" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
| 3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
| 4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 3,600 | 2,265 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
Polyurethane Spiders | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | ||||||||||||
| Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 2 1/8" | 1 3/4" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 000000 | 3,600 | 135 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 |
| 2 5/32" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 3,600 | 210 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
| 2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 3,600 | 210 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
| 2 27/32" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
| 3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
| 4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 3,600 | 1,185 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 |
Polyurethane Split Spiders | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | 347 Stainless Steel Retaining Rings | |||||||||||||
| Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | Each | |||
| 2 5/32" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 000000 | 9,200 | 670 | 0.03" | 2° | -30° to 200° | 0000000 | 000000 | 0000000 | 000000 |
| 2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 9,200 | 670 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 |
| 2 27/32" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 7,700 | 1,110 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 |
| 3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 7,700 | 1,110 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 |
| 4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 11/16" | 0000000 | 00000 | 5,900 | 2,180 | 0.03" | 2° | -30° to 200° | 0000000 | 000000 | 0000000 | 000000 |