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About Shaft Couplings
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Clamping Vibration-Damping
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. Good for precision motor and pump applications, the spider-shaped cushion reduces shock and compensates for minor shaft misalignment. Couplings allow zero backlash (no play).
A complete coupling consists of two hubs and one spider (each component sold separately). Hubs are lightweight, corrosion-resistant aluminum. Spiders are polyurethane for fair vibration damping and good chemical resistance.
Hubs for 10 mm shaft dia. and above have a keyway.
For technical drawings and 3-D models, click on a part number.
Durometer 98A Polyurethane Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
2024 Aluminum Hubs | Misalignment Capability | |||||||||||
| Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 1 7/64" | 3/4" | Forward/Reverse, Start/Stop | 000000 | 000000 | 8,000 | 30 | 0.003" | 0.8° | 0° to 180° | 0000000 | 000000 | |
| 1 13/32" | 1" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 150 | 0.003" | 0.8° | 0° to 180° | 0000000 | 00000 | |
| 1 13/16" | 1 5/16" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 170 | 0.003" | 0.8° | 0° to 180° | 0000000 | 00000 | |
| 2 7/64" | 1 5/8" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 330 | 0.004" | 0.8° | 0° to 180° | 0000000 | 00000 | |
| 2 13/32" | 2" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 550 | 0.005" | 0.8° | 0° to 180° | 0000000 | 00000 | |
| 3 13/64" | 2 1/4" | Forward/Reverse, Start/Stop | 000000 | 000000 | 8,000 | 820 | 0.004" | 0.8° | 0° to 180° | 0000000 | 00000 | |
Durometer 92A Polyurethane Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
2024 Aluminum Hubs | Misalignment Capability | |||||||||||
| Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 1 7/64" | 3/4" | Forward/Reverse, Start/Stop | 000000 | 000000 | 8,000 | 18 | 0.004" | 0.9° | 0° to 180° | 0000000 | 000000 | |
| 1 13/32" | 1" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 58 | 0.005" | 0.9° | 0° to 180° | 0000000 | 00000 | |
| 1 13/16" | 1 5/16" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 70 | 0.005" | 0.9° | 0° to 180° | 0000000 | 00000 | |
| 2 7/64" | 1 5/8" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 190 | 0.006" | 0.9° | 0° to 180° | 0000000 | 00000 | |
| 2 13/32" | 2" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 440 | 0.006" | 0.9° | 0° to 180° | 0000000 | 00000 | |
| 3 13/64" | 2 1/4" | Forward/Reverse, Start/Stop | 000000 | 000000 | 8,000 | 570 | 0.005" | 0.9° | 0° to 180° | 0000000 | 00000 | |
Durometer 85A Polyurethane Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
2024 Aluminum Hubs | Misalignment Capability | |||||||||||
| Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 1 7/64" | 3/4" | Forward/Reverse, Start/Stop | 000000 | 000000 | 8,000 | 10 | 0.005" | 1° | 0° to 180° | 0000000 | 000000 | |
| 1 13/32" | 1" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 30 | 0.006" | 1° | 0° to 180° | 0000000 | 00000 | |
| 1 13/16" | 1 5/16" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 36 | 0.006" | 1° | 0° to 180° | 0000000 | 00000 | |
Set Screw Vibration-Damping
Precision Flexible Shaft Couplings
The included set screw holds the coupling in place. Good for precision motor and pump applications, the spider-shaped cushion reduces shock and compensates for minor shaft misalignment. Couplings allow zero backlash (no play).
A complete coupling consists of two hubs and one spider (each component sold separately). Hubs are lightweight, corrosion-resistant nylon. Spiders are polyurethane for fair vibration damping and good chemical resistance.
Hubs for 3/8" shaft dia. and above have a keyway.
For technical drawings and 3-D models, click on a part number.
Durometer 98A Polyurethane Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Nylon Plastic Hubs | Misalignment Capability | |||||||||||
| Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 1 13/32" | 1 5/16" | Forward/Reverse, Start/Stop | 000000 | 000000 | 10,000 | 220 | 0.011" | 1° | 0° to 180° | 0000000 | 00000 | |
| 2 39/64" | 1 45/64" | Forward/Reverse, Start/Stop | 000000 | 00000 | 9,000 | 300 | 0.011" | 1° | 0° to 180° | 0000000 | 0000 | |
| 3 7/64" | 2 13/64" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 1,060 | 0.011" | 1° | 0° to 180° | 0000000 | 00000 | |
| 3 1/2" | 2 39/64" | Forward/Reverse, Start/Stop | 000000 | 00000 | 7,000 | 2,830 | 0.011" | 1° | 0° to 180° | 0000000 | 00000 | |
Durometer 64D Polyurethane Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Nylon Plastic Hubs | Misalignment Capability | |||||||||||
| Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 1 13/32" | 1 5/16" | Forward/Reverse, Start/Stop | 000000 | 000000 | 10,000 | 280 | 0.011" | 0.8° | 0° to 180° | 0000000 | 00000 | |
| 2 39/64" | 1 45/64" | Forward/Reverse, Start/Stop | 000000 | 00000 | 9,000 | 370 | 0.011" | 0.8° | 0° to 180° | 0000000 | 0000 | |
| 3 7/64" | 2 13/64" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 1,320 | 0.011" | 0.8° | 0° to 180° | 0000000 | 00000 | |
| 3 1/2" | 2 39/64" | Forward/Reverse, Start/Stop | 000000 | 00000 | 7,000 | 3,540 | 0.011" | 0.8° | 0° to 180° | 0000000 | 00000 | |
Durometer 80A Polyurethane Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Nylon Plastic Hubs | Misalignment Capability | |||||||||||
| Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 1 13/32" | 1 5/16" | Forward/Reverse, Start/Stop | 000000 | 000000 | 10,000 | 50 | 0.011" | 1.2° | 0° to 180° | 0000000 | 00000 | |
| 2 39/64" | 1 45/64" | Forward/Reverse, Start/Stop | 000000 | 00000 | 9,000 | 105 | 0.011" | 1.2° | 0° to 180° | 0000000 | 0000 | |
| 3 7/64" | 2 13/64" | Forward/Reverse, Start/Stop | 000000 | 00000 | 8,000 | 305 | 0.011" | 1.2° | 0° to 180° | 0000000 | 00000 | |
| 3 1/2" | 2 39/64" | Forward/Reverse, Start/Stop | 000000 | 00000 | 7,000 | 750 | 0.011" | 1.2° | 0° to 180° | 0000000 | 00000 | |
Clamping 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 screw to secure. Also known as Lovejoy couplings, they 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 (each component sold separately). Hubs are aluminum for light weight and good corrosion resistance.
Hytrel spiders provide fair vibration damping and excellent chemical resistance. Polyurethane spiders provide fair vibration damping and good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Hytrel Rubber Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
6026 Aluminum Hubs | Misalignment Capability | |||||||||||
| O'all Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 7/8" | 9/16" | Forward/Reverse, Start/Stop | 0000000 | 000000 | 27,000 | 42 | 0.002" | 0.8° | -55° to 245° | 0000000 | 00000 | |
| 1 3/16" | 51/64" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 19,000 | 105 | 0.002" | 0.8° | -55° to 245° | 0000000 | 00000 | |
| 1 11/32" | 63/64" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 15,200 | 210 | 0.002" | 0.8° | -55° to 245° | 0000000 | 00000 | |
| 1 25/64" | 1 3/16" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 12,700 | 280 | 0.002" | 0.8° | -55° to 245° | 0000000 | 00000 | |
Polyurethane Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
6026 Aluminum Hubs | Misalignment Capability | |||||||||||
| O'all Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 7/8" | 9/16" | Forward/Reverse, Start/Stop | 0000000 | 000000 | 27,000 | 21 | 0.004" | 1° | -30° to 160° | 0000000 | 00000 | |
| 1 3/16" | 51/64" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 19,000 | 53 | 0.004" | 1° | -30° to 160° | 0000000 | 0000 | |
| 1 11/32" | 63/64" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 15,200 | 89 | 0.004" | 1° | -30° to 160° | 0000000 | 00000 | |
| 1 25/64" | 1 3/16" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 12,700 | 130 | 0.004" | 1° | -30° to 160° | 0000000 | 0000 | |