Zero Backlash Couplings | McMaster-Carr

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System of Measurement

Shaft Diameter

Shaft Type

Overall Length

For Shaft Misalignment Type

Material

Shaft Mount Type

Construction

For Rotary Motion

Maximum Torque

500 in·lbf to 999 in·lbf

1,000 in·lbf to 9,999 in·lbf

10,000 in·lbf to 29,999 in·lbf

30,000 in·lbf or greater

Flexible Shaft Coupling Cut Style

Length

Shaft Coupling Flexibility

Flexible

Rigid

Clamping Screw Material

Stainless Steel

Steel

Angular Misalignment Capability

REACH

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

Yes

RoHS

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

1C998

EAR99

Flexible Shaft Coupling Type

Number of Clamping Screws Included

Parallel Misalignment Capability

Torque

500 in·lbf to 999 in·lbf

1,000 in·lbf to 9,999 in·lbf

10,000 in·lbf to 29,999 in·lbf

30,000 in·lbf or greater

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1,185 Products

Flexible Shaft Couplings

Precision Flexible Shaft Couplings

Servomotor Precision Flexible Shaft Couplings

Handle high twisting forces as well as misalignment in high-performance servomotor applications

317 products

Clamping Precision Flexible Shaft Couplings

Grip shafts evenly for more holding power than set screw couplings without marring the shaft

393 products

Set Screw Precision Flexible Shaft Couplings

A set screw bites into your shaft to hold the coupling in place

132 products

High-Speed Precision Flexible Shaft Couplings

Handle all types of misalignment and are good for encoder motion-control applications

117 products

High-Speed Servomotor Precision Flexible Shaft Couplings

Handle four times more speed than standard servomotor couplings

82 products

Electrically Isolating Servomotor Precision Flexible Shaft Couplings

An acetal plastic spacer insulates shaft components from stray electric current

18 products

High-Misalignment Precision Flexible Shaft Couplings

Compensate for more misalignment than other precision couplings

10 products

Flexible Shaft Couplings

High-Angular-Misalignment Flexible Shaft Couplings

Withstand higher angular misalignment than other three-piece couplings

10 products

Clamping High-Parallel-Misalignment Flexible Shaft Couplings

Grip misaligned shafts evenly for more holding power than set screw couplings

29 products

Clamping Flexible Shaft Couplings

Grip shafts evenly for more holding power than set screw couplings without marring the shaft

12 products

Set Screw High-Parallel-Misalignment Flexible Shaft Couplings

A set screw bites into misaligned shafts to hold the coupling in place

22 products

Cleaned and Bagged Flexible Shaft Couplings

Often used in electronics manufacturing facilities and other extra-clean environments

15 products

Flexible Shaft Couplings for Continuous Motion

Noncontact Magnetic Shaft Couplings

Magnetic force compensates for misalignment by transferring torque without wear or contact

4 products

Other Products

Rigid Shaft Couplings

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

7 products

U-Joints

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

29 products