Drive Reducers | McMaster-Carr

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System of Measurement

Shaft Diameter

Material

Length

Screw Size

Shaft Type

Overall Length

Shaft Mount Type

Construction

For Shaft Misalignment Type

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

Square Drive Size

Thread Size

Keyway Width

For Rotary Motion

Maximum Torque

Less than 1,000 in·lbf

1,000 in·lbf to 1,999 in·lbf

2,000 in·lbf to 9,999 in·lbf

10,000 in·lbf to 19,999 in·lbf

20,000 in·lbf or greater

Shaft Coupling Flexibility

Flexible

Rigid

Maximum Rotation Speed

Shape

Finish

Magnesium Phosphate Coated

Zinc Yellow-Chromate Plated

Socket Type

Air Hammer Adapter

Dual-Drive Socket Adapter

Extension

Finger-Tightening Adapter

Flex Adapter

Hex Head Adapter

Hex Shank-to-Square Drive Adapter

Quick-Change Adapter

Ratchet Adapter

Secure-Hold Socket Adapter

Socket

Spline Drive-to-Square Drive Adapter

Square Drive Size Adapter

Torque-and-Angle Measuring Adapter

Torque-Limiting Adapter

Forward

How can we improve?

5,176 Products

Fastening and Joining

Socket Adapters

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

200 products

Socket Extensions

Lengthen sockets to turn hard-to-reach fasteners

6 products

Wrench Heads

Attach to your ratchet wrench and socket extension to turn fasteners where clearance is limited

2 products

Studs

Press, weld, or screw in place to add a threaded fastening point

13 products

Spacers

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

1,823 products

Screw-Mount Nuts

Mount with screws, rivets, and nails to add threads to a surface

3 products

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

36 products

Standoffs

Separate, position, or connect components in assemblies

6 products

Power Transmission

Electric Gearmotors

A motor and speed reducer in one to slow speed and increase torque in AC- or DC- power applications

304 products

Gear Boxes

Transmit rotary motion without changing speed, or reduce speed while increasing torque

187 products

Gear Box Shafts

Convert output drives from female to male

6 products

Pulley and Sprocket Bushings

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

118 products

Rod Ends

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

6 products

Shear Couplings

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

21 products

Shaft Adapters

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

54 products

Shaft Couplings

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

1,964 products

Machinable Shaft Ends

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

56 products

Bore Reducers

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

31 products

V-Belt Drive Pulleys

Pair with a V-belt to transfer motion from a rotating shaft

54 products

Fabricating and Machining

Saw Blade Bushings

Shrink the diameter of your saw blade's arbor hole to fit your saw's arbor

7 products

Grinding Wheel Reducer Bushings

Connect grinding wheels to shanks with a smaller diameter

3 products

Material Handling

Wheel Reducer Bushings

Reduce the inside diameter of a bearing to fit a particular axle size

21 products