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About Shaft Couplings
More
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.
Buna-N spiders provide good vibration damping and chemical resistance. Hytrel spiders provide fair vibration damping and excellent chemical resistance.
For technical drawings and 3-D models, click on a part number.
High-Speed Vibration-Damping Flexible Shaft Couplings
Use these gear-shaped couplings for high-speed and high-torque applications. A rubber center allows flexing so couplings can take on multiple types of misalignment while damping vibration and shock. With no metal-to-metal contact, there’s no need for lubrication. Fasten to your shafts by tightening the set screws, which bite into the shaft to hold it.
A complete coupling consists of two hubs and one center (each component sold separately).
Hubs have a keyway, except hubs for 1/4" and 3/8" shaft dia. do not have a keyway.
For technical drawings and 3-D models, click on a part number.
Centers | |||||||||||||||
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Hubs | Misalignment Capability | ||||||||||||||
| O'all Lg. | OD | For Motion Type | Material | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Axial | Temp. Range, °F | Material | Each | ||
| 5 1/16" | 6 23/64" | Continuous | Cast Iron | 2 5/8" | 000000 | 000000 | 3,750 | 1,800 | 0.025" | 1° | 0.125" | -30° to 275° | TPE Rubber | 0000000 | 000000 |
| 5 11/16" | 7 1/2" | Continuous | Cast Iron | 2 5/8" | 000000 | 000000 | 3,600 | 2,875 | 0.025" | 1° | 0.125" | -30° to 275° | TPE Rubber | 0000000 | 00000 |
| 7 1/8" | 8 5/8" | Continuous | Cast Iron | 2 5/8" | 000000 | 000000 | 3,600 | 4,530 | 0.032" | 1° | 0.125" | -30° to 275° | EPDM Rubber | 0000000 | 000000 |