About Shaft Collars
Shaft collars are useful for holding and positioning components on a shaft. They can also serve as mechanical stops and stroke limiters.
More
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.
Buna-N Rubber Spiders | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Steel Hubs | Misalignment Capability | ||||||||||||
Overall Lg., mm | OD, mm | For Shaft Type | For Motion Type | For Shaft Dia., mm | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
115 | 96 | Keyed | Forward/Reverse, Start/Stop | 48 | 0000000 | 000000 | 5,000 | 1,240 | 0.015" | 1° | -40° to 212° | 0000000 | 000000 |
137 | 127 | Keyed | Forward/Reverse, Start/Stop | 48 | 0000000 | 000000 | 4,200 | 2,340 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
Hytrel Rubber Spiders | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Steel Hubs | Misalignment Capability | ||||||||||||
Overall Lg., mm | OD, mm | For Shaft Type | For Motion Type | For Shaft Dia., mm | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
115 | 96 | Keyed | Forward/Reverse, Start/Stop | 48 | 0000000 | 000000 | 3,600 | 3,705 | 0.015" | 0.5° | -55° to 245° | 0000000 | 0000000 |
137 | 127 | Keyed | Forward/Reverse, Start/Stop | 48 | 0000000 | 000000 | 4,200 | 6,225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
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 | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | ||
4 7/16" | 5 29/64" | Continuous | Cast Iron | 48mm | 0000000 | 000000 | 4,500 | 1,135 | 0.02" | 1° | 0.125" | -30° to 275° | TPE Rubber | 0000000 | 000000 |
5 1/16" | 6 23/64" | Continuous | Cast Iron | 48mm | 000000 | 000000 | 3,750 | 1,800 | 0.025" | 1° | 0.125" | -30° to 275° | TPE Rubber | 0000000 | 00000 |
Quick-Release Clamping Shaft Collars

Installing and removing a collar is as easy as pushing down and lifting up a clamp lever. Collars clamp evenly around the shaft to create a strong, mar-free hold. All have a clamping screw to adjust lever tension. Made of anodized aluminum, they are lightweight with good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Clamping Screw | Black Anodized 6061 Aluminum | |||||
---|---|---|---|---|---|---|
For Shaft Dia. | OD | Wd. | Type | No. Included | Each | |
48mm | 100mm | 19mm | Socket Head Screw | 1 | 00000000 | 0000000 |
Set Screw Shaft Collars

Keep these shaft collars in place by tightening their set screw into the shaft. The tip of the screw digs in for a secure hold, but will mar the shaft’s surface. For maximum holding power, make sure the set screw material is harder than your shaft material. Use these shaft collars to position and retain power transmission components such as sprockets, pulleys, and bearings. You can also use them to limit the movement of a shaft.
Carbon steel collars are strong and wear resistant. Collars that are blue make it easy to identify metric collars at a glance. They’re tinted to match other blue metric fasteners.
303 stainless steel collars are corrosion resistant and highly machinable.
DIN 705 collars meet an international standard for shaft collar dimensions.
For technical drawings and 3-D models, click on a part number.
Clamping Two-Piece Shaft Collars

These metal collars are stronger than plastic shaft collars. The two-piece design allows you to install them anywhere on a shaft without removing components or having access to the ends of the shaft. Collars clamp evenly around the shaft to create a strong, mar-free hold. Tighten the clamping screws to secure.
Black-oxide steel collars have some corrosion resistance. Zinc-plated steel and chrome-plated steel collars have moderate corrosion resistance with a bright finish. Aluminum collars are lightweight and have good corrosion resistance. 303 stainless steel collars have excellent corrosion resistance. 316 stainless steel collars have excellent corrosion and chemical resistance.
For technical drawings and 3-D models, click on a part number.
Clamping Screw | ||||||
---|---|---|---|---|---|---|
For Shaft Dia., mm | OD, mm | Wd., mm | Type | No. Included | Each | |
Black-Oxide 1215 Carbon Steel | ||||||
48 | 78 | 19 | Socket Head Screw | 2 | 0000000 | 000000 |
Zinc-Plated 1215 Carbon Steel | ||||||
48 | 78 | 19 | Socket Head Screw | 2 | 0000000 | 00000 |
2024 Aluminum | ||||||
48 | 78 | 19 | Socket Head Screw | 2 | 0000000 | 00000 |
303 Stainless Steel | ||||||
48 | 78 | 19 | Socket Head Screw | 2 | 0000000 | 000000 |
316 Stainless Steel | ||||||
48 | 78 | 19 | Socket Head Screw | 2 | 0000000 | 000000 |