Coupling Hubs | McMaster-Carr

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Shaft Type

Material

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Keyway Width

For Shaft Misalignment Type

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For Rotary Motion

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Diameter

Component

Set Screw Material

Number of Set Screws Included

Maximum Rotation Speed

Maximum Torque

RoHS

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

Clamping Screw Material

18-8 Stainless Steel

Steel

SAE Spline Size

Flexible Shaft Coupling Type

404 Products

Flexible Shaft Couplings

Set Screw Flexible Shaft Couplings

A set screw bites into your shaft to hold the coupling in place

68 products

High-Torque Set Screw Flexible Shaft Couplings

Take on twice as much torque as standard split spiders while a set screw holds hubs in place

20 products

Clamping High-Parallel-Misalignment Flexible Shaft Couplings

Grip misaligned shafts evenly for more holding power than set screw couplings

29 products

Clamping Flexible Shaft Couplings

Grip shafts evenly for more holding power than set screw couplings without marring the shaft

12 products

Machinable-Bore Flexible Shaft Couplings

Customize the bore to align uncommon shaft sizes or correct worn and oversized shafts

52 products

Metal-Detectable Flexible Shaft Couplings

Spider contains metal to trigger a detector if a piece breaks off, such as in food industry lines

12 products

High-Angular-Misalignment Flexible Shaft Couplings

Withstand higher angular misalignment than other three-piece couplings

10 products

Set Screw High-Parallel-Misalignment Flexible Shaft Couplings

A set screw bites into misaligned shafts to hold the coupling in place

22 products

Shock-Absorbing Flexible Shaft Couplings

Flexible spring steel wraps around hub teeth to absorb sharp, momentary load increases

29 products

Precision Flexible Shaft Couplings

Clamping Vibration-Damping Precision Flexible Shaft Couplings

Grip shafts evenly in precision motor and pump applications

40 products

Set Screw Vibration-Damping Precision Flexible Shaft Couplings

A set screw bites into the shaft to hold the couplings in place in precision motors and pumps

44 products

Flexible Shaft Couplings for Continuous Motion

High-Torque Flexible Shaft Couplings

A rugged roller‑chain design for excellent torque and angular misalignment capacity

12 products

High-Speed Vibration-Damping Flexible Shaft Couplings

Gear-shaped for high-speed and high-torque applications

20 products

Lightweight Flexible Shaft Couplings

Nylon sleeves reduce weight and lower energy consumption

30 products

Noncontact Magnetic Shaft Couplings

Magnetic force compensates for misalignment by transferring torque without wear or contact

4 products

Ultra-High-Torque Flexible Shaft Couplings

The rigid steel gear design transmits more torque than other couplings

12 products

Vibration-Damping Flexible Shaft Couplings

A flexible tire safeguards components by reducing vibration and shock

14 products

Splined Flexible Shaft Couplings

Pair with splined shafts, which are commonly found in gearboxes and pumps

18 products

Splined-to-Keyed Flexible Shaft Couplings

Connect splined shafts to keyed ones, such as in compressors, pumps, and motors

27 products