Motor Couplings | McMaster-Carr

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System of Measurement

Shaft Diameter

0.235" to 0.500"

0.235" to 0.625"

0.235" to 0.750"

0.235" to 0.875"

Shaft Type

Construction

OD

Material

Stainless Steel

For Shaft Misalignment Type

No Misalignment

Overall Length

Shaft Mount Type

Keyway Width

Component

Split Spider Cover

For Rotary Motion

Forward/Reverse

Flexible Shaft Coupling Type

Length

Keyway Depth

Flexible Shaft Coupling Trade Size

Diameter

Maximum Rotation Speed

Shaft Coupling Flexibility

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

Set Screw Material

Stainless Steel

RoHS

Compliant with Exemptions

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

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

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2,729 Products

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Flexible Shaft Couplings

Spider Couplings

Spider Couplings

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

Precision Beam Couplings

Precision Beam Couplings

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

High-Torque Spider Couplings

High-Torque Spider Couplings

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

High-Axial-Misalignment Sleeve Couplings

High-Axial-Misalignment Sleeve Couplings

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

Precision Spider Couplings

Precision Spider Couplings

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

Sleeve Couplings

Sleeve Couplings

More lightweight than other sleeve couplings to reduce energy consumption

Servomotor Precision Disc Couplings

Servomotor Precision Disc Couplings

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

High-Parallel-Misalignment Slotted Disc Couplings

High-Parallel-Misalignment Slotted Disc Couplings

Handle parallel misalignment by allowing shafts to slide independently

High-Torque Chain Couplings

High-Torque Chain Couplings

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

Shock-Absorbing Grid Couplings

Shock-Absorbing Grid Couplings

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

Precision Bellows Couplings

Precision Bellows Couplings

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

High-Angular-Misalignment Flex Disc Couplings

High-Angular-Misalignment Flex Disc Couplings

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

Servomotor Precision Bonded Couplings

Servomotor Precision Bonded Couplings

A bonded rubber center damps vibration and allows high angular misalignment

Torque-Limiting Shear Couplings

Torque-Limiting Shear Couplings

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

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

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

Offset hubs compensate for high parallel and angular misalignment

High-Misalignment Tire Couplings

High-Misalignment Tire Couplings

Handle the highest misalignment of any coupling while reducing vibration

Cleaned and Bagged Slotted Disc Couplings

Cleaned and Bagged Slotted Disc Couplings

Prevent contamination in electronics plants and other extra-clean environments

High-Torque Sleeve Couplings

High-Torque Sleeve Couplings

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

Electrically Isolating Servomotor Precision Disc Couplings

Electrically Isolating Servomotor Precision Disc Couplings

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

Splined-to-Keyed Spider Couplings

Splined-to-Keyed Spider Couplings

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

Non-Contact Magnetic Couplings

Non-Contact Magnetic Couplings

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

Other Products

Rigid Shaft Couplings

Rigid Shaft Couplings

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

Shaft Adapters

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

Torque Limiters

Torque Limiters

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

Machinable Shaft Ends

Machinable Shaft Ends

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

U-Joints

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

Clutch/Brakes

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

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)