Flexible Shaft Couplings | McMaster-Carr

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System of Measurement

Shaft Diameter

7/16" to 1 1/8"

7/16" to 1 3/16"

Shaft Type

Material

Stainless Steel

Construction

For Shaft Misalignment Type

OD

Overall Length

Shaft Mount Type

Keyway Width

For Rotary Motion

Forward/Reverse

Length

Component

Keyway Depth

Flexible Shaft Coupling Cut Style

Maximum Torque

Less than 1,000 in·lbf

1,000 in·lbf to 9,999 in·lbf

10,000 in·lbf to 19,999 in·lbf

20,000 in·lbf to 29,999 in·lbf

30,000 in·lbf or greater

Flexible Shaft Coupling Type

Set Screw Material

Stainless Steel

Diameter

RoHS

Compliant with Exemptions

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

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

Number of Set Screws Included

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1,991 Products

Flexible Shaft Couplings

Precision Flexible Shaft Couplings

Clamping Precision Flexible Shaft Couplings

Clamping Precision Flexible Shaft Couplings

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

Set Screw Precision Flexible Shaft Couplings

Set Screw Precision Flexible Shaft Couplings

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

Clamping Vibration-Damping Precision Flexible Shaft Couplings

Clamping Vibration-Damping Precision Flexible Shaft Couplings

Grip shafts evenly in precision motor and pump applications

Servomotor Precision Flexible Shaft Couplings

Servomotor Precision Flexible Shaft Couplings

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

Set Screw Vibration-Damping Precision Flexible Shaft Couplings

Set Screw Vibration-Damping Precision Flexible Shaft Couplings

A set screw bites into the shaft to hold the couplings in place in precision motors and pumps

High-Misalignment Vibration-Damping Precision Flexible Shaft Couplings

High-Misalignment Vibration-Damping Precision Flexible Shaft Couplings

Reduce vibration and compensate for high shaft misalignment

High-Speed Precision Flexible Shaft Couplings

High-Speed Precision Flexible Shaft Couplings

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

High-Speed Servomotor Precision Flexible Shaft Couplings

High-Speed Servomotor Precision Flexible Shaft Couplings

Handle four times more speed than standard servomotor couplings

High-Misalignment Precision Flexible Shaft Couplings

High-Misalignment Precision Flexible Shaft Couplings

Compensate for more misalignment than other precision couplings

Electrically Isolating Servomotor Precision Flexible Shaft Couplings

Electrically Isolating Servomotor Precision Flexible Shaft Couplings

An acetal plastic spacer insulates shaft components from stray electric current

Flexible Shaft Couplings

Set Screw Flexible Shaft Couplings

Set Screw Flexible Shaft Couplings

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

High-Torque Set Screw Flexible Shaft Couplings

High-Torque Set Screw Flexible Shaft Couplings

Take on twice as much torque as standard split spiders while a set screw holds hubs in place

High-Angular-Misalignment Flexible Shaft Couplings

High-Angular-Misalignment Flexible Shaft Couplings

Withstand higher angular misalignment than other three-piece couplings

Set Screw High-Parallel-Misalignment Flexible Shaft Couplings

Set Screw High-Parallel-Misalignment Flexible Shaft Couplings

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

Metal-Detectable Flexible Shaft Couplings

Metal-Detectable Flexible Shaft Couplings

Spider contains metal to trigger a detector if a piece breaks off, such as in food industry lines

Clamping Flexible Shaft Couplings

Clamping Flexible Shaft Couplings

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

Clamping High-Parallel-Misalignment Flexible Shaft Couplings

Clamping High-Parallel-Misalignment Flexible Shaft Couplings

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

Machinable-Bore Flexible Shaft Couplings

Machinable-Bore Flexible Shaft Couplings

Customize the bore to align uncommon shaft sizes or correct worn and oversized shafts

Cleaned and Bagged Flexible Shaft Couplings

Cleaned and Bagged Flexible Shaft Couplings

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

Shock-Absorbing Flexible Shaft Couplings

Shock-Absorbing Flexible Shaft Couplings

Flexible spring steel wraps around hub teeth to absorb sharp, momentary load increases

Flexible-Shaft Shear Couplings

Flexible-Shaft Shear Couplings

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

Flexible Shaft Couplings for Continuous Motion

Lightweight Flexible Shaft Couplings

Lightweight Flexible Shaft Couplings

Nylon sleeves reduce weight and lower energy consumption

High-Speed Vibration-Damping Flexible Shaft Couplings

High-Speed Vibration-Damping Flexible Shaft Couplings

Gear-shaped for high-speed and high-torque applications

High-Torque Flexible Shaft Couplings

High-Torque Flexible Shaft Couplings

A rugged roller‑chain design for excellent torque and angular misalignment capacity

Ultra-High-Torque Flexible Shaft Couplings

Ultra-High-Torque Flexible Shaft Couplings

The rigid steel gear design transmits more torque than other couplings

Noncontact Magnetic Shaft Couplings

Noncontact Magnetic Shaft Couplings

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

Vibration-Damping Flexible Shaft Couplings

Vibration-Damping Flexible Shaft Couplings

A flexible tire safeguards components by reducing vibration and shock

Splined Flexible Shaft Couplings

Splined Flexible Shaft Couplings

Splined Flexible Shaft Couplings

Pair with splined shafts, which are commonly found in gearboxes and pumps

Splined-to-Keyed Flexible Shaft Couplings

Splined-to-Keyed Flexible Shaft Couplings

Splined-to-Keyed Flexible Shaft Couplings

Connect splined shafts to keyed ones, such as in compressors, pumps, and motors

Other Products

U-Joints

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

Torque Limiters

Torque Limiters

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

Pulley and Sprocket Bushings

Pulley and Sprocket Bushings

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

Joint Covers

Shield rotating joints to keep lubricants in and contaminants out

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