Three-Piece Couplings | McMaster-Carr

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Shaft Diameter

Shaft Type

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Material

Overall Length

For Shaft Misalignment Type

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Keyway Width

For Rotary Motion

Length

Keyway Depth

Shaft Coupling Flexibility

Component

Set Screw Material

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

Yes

Number of Set Screws Included

REACH

Compliant

RoHS

Compliant

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Diameter

Flexible Shaft Coupling Type

Clamping Screw Material

Stainless Steel

Steel

Maximum Torque

Less than 1,000 in·lbf

1,000 in·lbf to 1,999 in·lbf

2,000 in·lbf to 2,999 in·lbf

3,000 in·lbf to 9,999 in·lbf

10,000 in·lbf or greater

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316 Products

Flexible Shaft Couplings

Set Screw Flexible Shaft Couplings

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

68 products

Clamping High-Parallel-Misalignment Flexible Shaft Couplings

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

29 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-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

Set Screw High-Parallel-Misalignment Flexible Shaft Couplings

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

22 products

High-Angular-Misalignment Flexible Shaft Couplings

Withstand higher angular misalignment than other three-piece couplings

10 products

Machinable-Bore Flexible Shaft Couplings

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

52 products

Clamping Flexible Shaft Couplings

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

12 products

Cleaned and Bagged Flexible Shaft Couplings

Often used in electronics manufacturing facilities and other extra-clean environments

15 products

Flexible Shaft Couplings for Continuous Motion

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

Splined-to-Keyed Flexible Shaft Couplings

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

27 products

Splined Flexible Shaft Couplings

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

18 products

Other Products

Rigid Shaft Couplings

Join two shafts that are aligned and handle higher torque than flexible shaft couplings

37 products