Shaft Reducers | McMaster-Carr

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DFARS Specialty Metals

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Compliant with Exemptions

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How can we improve?

4,715 Products

Power Transmission

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

Shaft Couplings

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

2,006 products

Machinable Shaft Ends

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

56 products

Shear Couplings

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

22 products

Pulley and Sprocket Bushings

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

118 products

Gear Boxes

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

158 products

Gear Box Mounts

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

6 products

Bearing Adapter Sleeves

Close gaps between your bearing and shaft for a tight fit

29 products

Torque Limiters

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

71 products

Shafts

Transmit power, motion, and speed between machine components

10 products

Fastening and Joining

Spacers

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

1,845 products

Unthreaded Inserts

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

69 products