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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.
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About Shaft Couplings
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Split-Tapered Bushings
The tapered barrel on these bushings is split on both sides, allowing them to contract more tightly around the shaft than quick-disconnect and taper-lock bushings. They're for use with split-tapered sprockets and pulleys of the same bushing style. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.
For technical drawings and 3-D models, click on a part number.
| For Shaft Dia. | Overall Wd. | Taper | Fastener Tightening Torque, in.-lbs. | Each | |
Steel | |||||
|---|---|---|---|---|---|
H Style Bushing | |||||
| 11mm | 1 1/4" | 3° | 95 | 00000000 | 000000 |
Quick-Grip Screw-Clamp Bushings
For technical drawings and 3-D models, click on a part number.
| For Shaft Dia. | OD | Overall Wd. | Max. Torque, in.-lbs. | Each | |
Steel | |||||
|---|---|---|---|---|---|
| 11mm | 23mm | 26mm | 720 | 0000000 | 000000 |
Self-Centering Screw-Clamp Bushings
A mounting flange prevents movement during tightening, so it's easy to center these bushings in your sprocket. They are also good for shock loads. When you tighten the included screws, the bushing's inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear. They can be mounted on shafts with or without keyways.
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 | Includes | Each | |
| 11mm | 24mm | 21mm | 300 | 42 | Steel | Clamping Screws | 0000000 | 000000 |
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 with a black-oxide finish have some corrosion resistance, but only in dry environments. Their dark color can be useful for matching other parts in your system. 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.
Set Screw | |||||||
|---|---|---|---|---|---|---|---|
| For Shaft Dia., mm | OD, mm | Wd., mm | Type | No. Included | Specifications Met | Each | |
Carbon Steel | |||||||
| 11 | 20 | 10 | Hex Socket | 1 | DIN 705 | 0000000 | 00000 |
Black-Oxide 1215 Carbon Steel | |||||||
| 11 | 22 | 12 | Hex Socket | 1 | __ | 00000000 | 00000 |
Blue Passivated Carbon Steel | |||||||
| 11 | 20 | 10 | Hex Socket | 1 | DIN 705 | 0000000 | 0000 |
303 Stainless Steel | |||||||
| 11 | 20 | 10 | Hex Socket | 1 | DIN 705 | 0000000 | 0000 |
| 11 | 22 | 12 | Hex Socket | 1 | __ | 00000000 | 00000 |
Clamping Shaft Collars
These metal collars are stronger than plastic shaft collars. They clamp evenly around the shaft to create a strong, mar-free hold. To use, slide onto your shaft and tighten the clamping screw to secure.
Black-oxide steel collars have some corrosion resistance. Zinc-plated steel collars have moderate corrosion resistance. Anodized aluminum collars are lightweight like unfinished aluminum collars, but they’re more corrosion resistant and have better screw seating torque, which means they’re less likely to shift. 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 | ||||||
| 11 | 28 | 11 | Socket Head Screw | 1 | 000000000 | 00000 |
Zinc-Plated 1215 Carbon Steel | ||||||
| 11 | 28 | 11 | Socket Head Screw | 1 | 000000000 | 0000 |
2024 Aluminum | ||||||
| 11 | 28 | 11 | Socket Head Screw | 1 | 00000000 | 0000 |
Anodized 2024 Aluminum | ||||||
| 11 | 28 | 11 | Socket Head Screw | 1 | 00000000 | 00000 |
303 Stainless Steel | ||||||
| 11 | 28 | 11 | Socket Head Screw | 1 | 00000000 | 00000 |
316 Stainless Steel | ||||||
| 11 | 28 | 11 | Socket Head Screw | 1 | 00000000 | 00000 |
Washdown Clamping Shaft Collars
Suitable for use in washdown applications, these plastic collars also offer good chemical resistance. They clamp evenly around the shaft to create a strong, mar-free hold. To use, slide onto your shaft and tighten the clamping screw to secure.
Acetal collars have a naturally slippery surface and resist swelling when exposed to moisture.
For technical drawings and 3-D models, click on a part number.
Clamping Screw | White Acetal Plastic | |||||
|---|---|---|---|---|---|---|
| For Shaft Dia., mm | OD, mm | Wd., mm | Type | No. Included | Each | |
| 11 | 28 | 11 | Socket Head Screw | 1 | 00000000 | 00000 |
Tight-Hold Quick-Release Clamping Shaft Collars
A threaded lever lets you tighten these collars with more torque than other quick-release styles, ensuring that they stay put on your shaft. Use them to quickly move components or make setup changes, such as on packing equipment, printers, or label feeding machines. To make adjustments in tight spaces, lift the lever and twist to the side. Similar to a ratchet, you can lift the lever to disengage from the threads and reposition.
Black oxide steel collars are very strong, but will rust if exposed to moisture.
Anodized aluminum is strong and lightweight. It can withstand humidity without rusting, but water left on the surface will cause it to corrode.
303 stainless steel collars can handle frequent exposure to water without rusting.
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. In addition to the benefits of aluminum, anodized aluminum collars have extra corrosion resistance, and you can tighten the clamping screw with more torque, so they stay in place. 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 | ||||||
| 11 | 28 | 11 | Socket Head Screw | 2 | 0000000 | 00000 |
Zinc-Plated 1215 Carbon Steel | ||||||
| 11 | 28 | 11 | Socket Head Screw | 2 | 0000000 | 00000 |
2024 Aluminum | ||||||
| 11 | 28 | 11 | Socket Head Screw | 2 | 000000 | 00000 |
Anodized 2024 Aluminum | ||||||
| 11 | 28 | 11 | Socket Head Screw | 2 | 0000000 | 00000 |
303 Stainless Steel | ||||||
| 11 | 28 | 11 | Socket Head Screw | 2 | 0000000 | 00000 |
316 Stainless Steel | ||||||
| 11 | 28 | 11 | Socket Head Screw | 2 | 0000000 | 00000 |
Washdown Clamping Two-Piece Shaft Collars
Suitable for use in washdown applications, these plastic collars also offer good chemical resistance. 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.
Acetal collars have a naturally slippery surface and resist swelling when exposed to moisture.
For technical drawings and 3-D models, click on a part number.
Clamping Screw | White Acetal Plastic | |||||
|---|---|---|---|---|---|---|
| For Shaft Dia., mm | OD, mm | Wd., mm | Type | No. Included | Each | |
| 11 | 28 | 11 | Socket Head Screw | 2 | 0000000 | 000000 |
Quick-Release Two-Piece Clamping Shaft Collars
Make quick adjustments to these shaft collars with a lever on the side. Often used on packing equipment, printers, and label feeding machines, these collars are used to quickly move components or make setup changes. To make adjustments in tight spaces, lift the lever and twist to either side. Similar to a ratchet, you can tighten and loosen with the lever down; lift the lever to disengage from the threads and reposition. The two pieces of the collar separate, so you can install them anywhere on a shaft without removing components or having access to the end.
Black oxide steel collars are very strong, but will rust if exposed to moisture.
Anodized aluminum is strong and lightweight. It can withstand humidity without rusting, but water left on the surface will cause it to corrode.
303 stainless steel collars can handle frequent exposure to water without rusting.
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.
Metric 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 13/32" | 1" | Forward/Reverse, Start/Stop | 11mm | 000000 | 000000 | 8,000 | 150 | 0.003" | 0.8° | 0° to 180° | 0000000 | 000000 |
| 1 13/16" | 1 5/16" | Forward/Reverse, Start/Stop | 11mm | 000000 | 00000 | 8,000 | 170 | 0.003" | 0.8° | 0° to 180° | 0000000 | 00000 |
| 2 7/64" | 1 5/8" | Forward/Reverse, Start/Stop | 11mm | 000000 | 00000 | 8,000 | 330 | 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 13/32" | 1" | Forward/Reverse, Start/Stop | 11mm | 000000 | 000000 | 8,000 | 58 | 0.005" | 0.9° | 0° to 180° | 0000000 | 000000 |
| 1 13/16" | 1 5/16" | Forward/Reverse, Start/Stop | 11mm | 000000 | 00000 | 8,000 | 70 | 0.005" | 0.9° | 0° to 180° | 0000000 | 00000 |
| 2 7/64" | 1 5/8" | Forward/Reverse, Start/Stop | 11mm | 000000 | 00000 | 8,000 | 190 | 0.006" | 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 13/32" | 1" | Forward/Reverse, Start/Stop | 11mm | 000000 | 000000 | 8,000 | 30 | 0.006" | 1° | 0° to 180° | 0000000 | 000000 |
| 1 13/16" | 1 5/16" | Forward/Reverse, Start/Stop | 11mm | 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.
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 | ||
| 35mm | 32mm | Forward/Reverse, Start/Stop | 11mm | 000000 | 000000 | 10,000 | 220 | 0.011" | 1° | 0° to 180° | 0000000 | 00000 |
| 66mm | 42mm | Forward/Reverse, Start/Stop | 11mm | 000000 | 00000 | 9,000 | 300 | 0.011" | 1° | 0° to 180° | 0000000 | 0000 |
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 | ||
| 35mm | 32mm | Forward/Reverse, Start/Stop | 11mm | 000000 | 000000 | 10,000 | 280 | 0.011" | 0.8° | 0° to 180° | 0000000 | 00000 |
| 66mm | 42mm | Forward/Reverse, Start/Stop | 11mm | 000000 | 00000 | 9,000 | 370 | 0.011" | 0.8° | 0° to 180° | 0000000 | 0000 |
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 | ||
| 35mm | 32mm | Forward/Reverse, Start/Stop | 11mm | 000000 | 000000 | 10,000 | 50 | 0.011" | 1.2° | 0° to 180° | 0000000 | 00000 |
| 66mm | 42mm | Forward/Reverse, Start/Stop | 11mm | 000000 | 00000 | 9,000 | 105 | 0.011" | 1.2° | 0° to 180° | 0000000 | 0000 |
High-Speed Servomotor Precision Flexible Shaft Couplings
Connect shafts and ball screws to high-speed servomotors and stepper motors—these shaft couplings handle four times more speed than standard servomotor couplings. They’re often found on high-torque motors that frequently start and stop, such as those used with packaging machines, press brakes, and semiconductor manufacturing equipment.
With aluminum hubs joined by a flexible fluoroelastomer or nitrile rubber core, these shaft couplings dampen vibration and adjust for misalignment. When machines accelerate and decelerate quickly, these couplings remain stiff to maintain accuracy and repeatability, which prevents equipment from moving out of place. They also resist backlash, meaning all of the turning force from the motor is passed on to the connected shaft. The core resists water, petroleum-based chemicals, and inorganic acids while also insulating bearings, encoders, and other shaft components from stray electric current. Clamping screws provide hold without marring shafts; they’re useful in applications where shafts are frequently assembled and disassembled.
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 | Parallel | Angular | Axial | For Motion Type | Each | |
2017 Aluminum with Fluoroelastomer Rubber Center | ||||||||||
| 6mm × 11mm | 1 17/64" | 63/64" | 25,000 | 35 in.-lbs. | 0.006" | 1.5° | 0.008" | Forward/Reverse, Start/Stop | 00000000 | 000000 |
| 8mm × 11mm | 1 17/64" | 63/64" | 25,000 | 35 in.-lbs. | 0.006" | 1.5° | 0.008" | Forward/Reverse, Start/Stop | 00000000 | 00000 |
| 10mm × 11mm | 1 13/32" | 1 3/16" | 20,000 | 55 in.-lbs. | 0.008" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 0000000 | 00000 |
| 11mm × 11mm | 1 1/2" | 1 11/32" | 15,000 | 70 in.-lbs. | 0.008" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 00000000 | 00000 |
| 11mm × 12mm | 1 13/32" | 1 3/16" | 20,000 | 55 in.-lbs. | 0.008" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 00000000 | 00000 |
Set Screw Flexible Shaft Couplings
Each hub includes a set screw, 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). Hubs for 1/2" shaft dia. and above (unless noted) and all metric sizes have a keyway.
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 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron 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 | ||
| *Hub for 5/8" shaft dia. does not have a keyway. | ||||||||||||
| 1 23/32" | 1 5/64" | Forward/Reverse, Start/Stop | 11mm | 00000000 | 00000 | 18,000 | 26 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
| 1 63/64" | 1 23/64" | Forward/Reverse, Start/Stop | 11mm | 0000000 | 0000 | 14,000 | 43 | 0.015" | 1° | -40° to 212° | 0000000 | 0000 |
Buna-N Rubber Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Steel Hubs | Misalignment Capability | |||||||||||
| Overall Lg., mm | OD, mm | For Motion Type | For Shaft Dia., mm | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 54 | 45 | Forward/Reverse, Start/Stop | 11 | 0000000 | 00000 | 11,000 | 90 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
| 64 | 54 | Forward/Reverse, Start/Stop | 11 | 0000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 0000 |
Hytrel Rubber Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron 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 | ||
| *Hub for 5/8" shaft dia. does not have a keyway. | ||||||||||||
| 1 23/32" | 1 5/64" | Forward/Reverse, Start/Stop | 11mm | 00000000 | 00000 | 18,000 | 50 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
| 1 63/64" | 1 23/64" | Forward/Reverse, Start/Stop | 11mm | 0000000 | 0000 | 3,600 | 110 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
Hytrel Rubber Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Steel Hubs | Misalignment Capability | |||||||||||
| Overall Lg., mm | OD, mm | For Motion Type | For Shaft Dia., mm | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 54 | 45 | Forward/Reverse, Start/Stop | 11 | 0000000 | 00000 | 3,600 | 225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
| 64 | 54 | Forward/Reverse, Start/Stop | 11 | 0000000 | 00000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |