Zero Backlash Couplings | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	For Shaft Diameter For Shaft Diameter

	For Shaft Type For Shaft Type

	Round
	Keyed
	Spline

	Shaft Mount Type Shaft Mount Type


Clamp On	Set Screw

	Overall Length Overall Length

	Material Material

	For Shaft Misalignment Type For Shaft Misalignment Type


Angular	Parallel

Axial	None

	OD OD

	Construction Construction

One Piece

Multipiece

Three Piece

	For Motion Type For Motion Type

Forward/Reverse

Start/Stop

Continuous

	Shaft Coupling Type Shaft Coupling Type

Flexible

Rigid

	Maximum Speed Maximum Speed

30,000 rpm or greater

Not Rated

	Maximum Torque Maximum Torque

Less than 100 in.-lbs.

100 to 249 in.-lbs.

250 to 499 in.-lbs.

500 to 9,999 in.-lbs.

10,000 in.-lbs. or greater

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Clamping Screw Material Clamping Screw Material

Steel

Stainless Steel

	Angular Misalignment Capability Angular Misalignment Capability

	Number of Clamping Screws Included Number of Clamping Screws Included

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Clamping Screw Type Clamping Screw Type

Socket Head Screw

Cap Screw

	Axial Misalignment Capability Axial Misalignment Capability

	Parallel Misalignment Capability Parallel Misalignment Capability

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Flexible Shaft Coupling Cut Style Flexible Shaft Coupling Cut Style

1,185 Products

About Shaft Couplings

Precision Flexible Shaft Couplings

Also known as zero-backlash couplings, these transmit the exact same speed between shafts during speed or directional changes, resulting in repeatable, precise positioning. Use them for precision motion-control applications involving servomotors and encoders.

Flexible Shaft Couplings

These multi-piece couplings have replaceable centers which are flexible to absorb vibration and accommodate misalignment.

Flexible Shaft Couplings for Continuous Motion

Commonly used to connect motors to driven machinery, pumps, and gearboxes, these couplings are suitable for continuous motion.

Rigid Shaft Couplings

Good for high-torque applications, rigid shaft couplings connect two shafts that are aligned, allowing for no relative movement between the shafts.

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About Shaft Couplings

Shaft Connectors

Precision Flexible Shaft Couplings

Flexible Shaft Couplings

Flexible Shaft Couplings for Continuous Motion

Rigid Shaft Couplings