Coupling Shafts | McMaster-Carr

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For Shaft Misalignment Type

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For Rotary Motion

Component

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Keyway Depth

Flexible Shaft Coupling Type

Shaft Coupling Flexibility

Flexible

Rigid

Maximum Rotation Speed

Maximum Torque

Less than 10,000 in·lbf

10,000 in·lbf to 19,999 in·lbf

20,000 in·lbf to 29,999 in·lbf

30,000 in·lbf to 39,999 in·lbf

40,000 in·lbf or greater

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Set Screw Material

RoHS

Compliant with Exemptions

Not Compliant

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

Yes

Clamping Screw Material

Stainless Steel

Steel

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

4,699 Products

Flexible Shaft Couplings

Spider Couplings

A rubbery center fits between hubs to enable torque transfer and damp vibration

106 products

Precision Spider Couplings

Position shafts on motors, pumps, and other equipment that requires highly controlled movements

66 products

Precision Beam Couplings

Slits on the one-piece body flex to help transfer full torque and compensate for tiny misalignments

529 products

High-Torque Spider Couplings

A thicker split spider helps transmit higher torque than standard split spider couplings

20 products

Servomotor Precision Disc Couplings

Withstand high torque from starts, stops, and reversals in high-performance servomotor setups

317 products

High-Axial-Misalignment Sleeve Couplings

A gear-shaped sleeve helps withstand high axial misalignment and damp vibration

20 products

High-Torque Chain Couplings

A roller chain locks onto teeth on the hubs to withstand high torque

12 products

High-Parallel-Misalignment Slotted Disc Couplings

Handle parallel misalignment by allowing shafts to slide independently

39 products

Sleeve Couplings

More lightweight than other sleeve couplings to reduce energy consumption

30 products

Precision Bellows Couplings

A thin-walled, corrugated-metal center tube flexes to handle all types of misalignment

127 products

Servomotor Precision Bonded Couplings

A bonded rubber center damps vibration and allows high angular misalignment

82 products

High-Parallel-and-Angular-Misalignment Precision Double Loop Couplings

Offset hubs compensate for high parallel and angular misalignment

119 products

Torque-Limiting Shear Couplings

When torque is too high, sever the connection between shafts so connected parts don't break

21 products

High-Angular-Misalignment Flex Disc Couplings

A flexible disc helps transfer torque smoothly in assemblies with tilting shafts

10 products

Electrically Isolating Servomotor Precision Disc Couplings

Block stray current so it doesn't erode or interfere with components on your shaft

18 products

Cleaned and Bagged Slotted Disc Couplings

Prevent contamination in electronics plants and other extra-clean environments

15 products

High-Torque Sleeve Couplings

A steel sleeve and hubs help transmit higher torque than other sleeve couplings

12 products

Shock-Absorbing Grid Couplings

Flexible spring steel absorbs sudden load increases from starts, stops, and reversals

29 products

Non-Contact Magnetic Couplings

Magnetic hubs compensate for misalignment by transferring torque without wear or contact

4 products

Splined-to-Keyed Spider Couplings

Connect splined shafts with keyed ones, such as shafts on a hydraulic pump and an electric motor

9 products

High-Misalignment Tire Couplings

Handle the highest misalignment of any coupling while reducing vibration

14 products

Other Products

Rigid Shaft Couplings

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

696 products

Shaft Adapters

Increase or reduce your shaft's diameter to fit equipment, or replace damaged shaft ends

54 products

U-Joints

Transfer torque between shafts at an angle; handle more torque and misalignment than flexible shafts

181 products

Machinable Shaft Ends

Mill custom pulleys, threaded hubs, sprockets, collars, and sensor targets and mount them to shafts

56 products

Torque Limiters

Keep torque at or below a set limit to control tension or braking or protect machinery from overload

127 products

Brakes

Control how much and how quickly your drive system slows down

7 products

Flexible Shafts

Snake around curves and obstructions to transmit rotary motion along any path

41 products

Joint Covers

Shield rotating joints to keep lubricants in and contaminants out

18 products

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

34 products

Rod End Nuts

Attach to rods, pipe, and tubing to make pivot and hinge points

8 products

Rod End Seals

Keep dirt out and lubrication in to extend the life of rod ends

16 products

Rod Ends

Use with connecting rods to support loads and control steering, tensioning, or pivoting motion

1,615 products

Clutches

Start and stop the transmission of power to machinery

58 products

Rigid Shaft Coupling Covers

Shield rigid shaft couplings from dirt, water, and lubricants to extend their life

13 products

Rod End Inserts

Attach to rod ends to increase the amount of misalignment they can handle

29 products

Mechanical Control Cables

Weave around obstructions to operate valves, throttles, and other machinery from a distance

97 products

Driver Extension Adapters

Create a tool that’s as long as you need to reach deeply recessed fasteners

44 products

Clutch/Brakes

Control when to transmit power with a clutch and when to hold a load in place with a brake

5 products