Shaft Adapters | McMaster-Carr

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System of Measurement

Shaft Diameter

Material

Length

Shaft Type

Thread Size

Overall Length

Screw Size

Shaft Mount Type

Construction

For Shaft Misalignment Type

Shaft Coupling Connection

Keyway Width

Gender

Shape

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

Hex Size

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

Finish

For Rotary Motion

Shaft Coupling Flexibility

16,178 Products

Power Transmission

Shaft Couplings

Connect two shafts to transfer rotary motion from one to the other

2,110 products

Shaft Coupling Covers

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

13 products

Shaft Adapters

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

54 products

Bore Reducers

Adapt the bore of a component to a smaller size for mounting on a shaft

31 products

Machinable Shaft Ends

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

56 products

U-Joints

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

174 products

Shear Couplings

Sever the connection between shafts when there's too much torque to protect parts from breaking

21 products

Flexible Shafts

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

41 products

Pulley and Sprocket Bushings

Mount between a rotating shaft and equipment to secure the shaft and reduce vibration

118 products

Torque Limiters

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

112 products

Brakes

Control how much and how quickly your drive system slows down

7 products

Clutches

Start and stop the transmission of power to machinery

58 products

Clutch/Brakes

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

2 products

Bearing Adapter Sleeves

Close gaps between your bearing and shaft for a tight fit

29 products

Roller Bearing Shaft Liners

Adapt precision needle-roller bearings for use on unhardened, unground shafts

30 products

Gear Boxes

Adjust motor speed to achieve the right torque for your machine; transmit motion at a 90° angle

170 products

Gear Box Mounts

Secure gear boxes that can’t be attached directly to a machine or other surface

6 products

Rod Ends

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

1,623 products

Rod End Inserts

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

29 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

Connecting Rods

Use with rod ends and swivel joints to link components in push/pull assemblies

808 products

Rotary Shafts

Pair with gears, sprockets, and bearings to transmit rotary motion

10 products

Fabricating and Machining

Motor Shaft Arbors

Mount abrasive discs to the shafts of bench-top motors, grinders, and buffers

8 products

Polisher Arbor Extensions

Lengthen your polisher's reach to access deep grooves and tight spots

1 product

Buffing and Polishing Wheel Chucks

Attach to the shaft of your grinder or buffer to hold wheels with a shank

1 product

Buffing and Polishing Wheel Spindles

Mount wheels to your tool’s shaft, collet, or drill chuck

12 products

Sanding Sleeve Drums

Convert grinders or hand-held power tools into sanding tools

8 products

Fastening and Joining

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

4,776 products

Standoffs

Separate, position, or connect components in assemblies

5,257 products

Thread Adapters

Join threads of a different type, size, and gender

32 products

Unthreaded Inserts

Reinforce, align, and adjust joints as you tighten a fastener

69 products

Building and Machinery Hardware

Mechanical Control Cables

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

97 products

Joint Covers

Shield rotating joints to keep lubricants in and contaminants out

18 products

Material Handling

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

111 products