Couplings for 8mm Shafts

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	System of Measurement System of Measurement

Inch

Metric

	For Shaft Diameter For Shaft Diameter	Show

8mm

	For Shaft Diameter For Shaft Diameter	Hide

	For Shaft Type For Shaft Type

	Round
	Keyed

	Shaft Mount Type Shaft Mount Type


Clamp On	Set Screw

	OD OD

	Length Length

	Construction Construction

	Material Material

	For Shaft Misalignment Type For Shaft Misalignment Type


Angular	Parallel

Axial	None

	For Motion Type For Motion Type

Forward/Reverse

Start/Stop

Continuous

	Shaft Coupling Type Shaft Coupling Type

Flexible

Rigid

	Maximum Torque Maximum Torque

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

REACH Compliant

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

DFARS Specialty Metals
COTS-Exempt

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

RoHS Compliant

	Number of Clamping Screws Included Number of Clamping Screws Included

	Clamping Screw Material Clamping Screw Material

Steel

Stainless Steel

	Maximum Speed Maximum Speed

	Flexible Shaft Coupling Cut Style Flexible Shaft Coupling Cut Style

Spiral

Parallel

	Clamping Screw Type Clamping Screw Type

Socket Head Screw

	Clamping Screw Finish Clamping Screw Finish

Black Oxide

	Number of Set Screws Included Number of Set Screws Included

	Angular Misalignment Capability Angular Misalignment Capability

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203 Products

About Shaft Couplings

Clamping Precision Flexible Shaft Couplings

Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft.

Set Screw Precision Flexible Shaft Couplings

Tighten the set screws to fasten these couplings to your shaft. Set screws bite into the shaft to hold the couplings in place.

Clamping Vibration-Damping
Precision Flexible Shaft Couplings

Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft.

Set Screw Vibration-Damping
Precision Flexible Shaft Couplings

Each hub includes a set screw, which bites into your shaft to hold the coupling in place.

High-Misalignment Vibration-Damping
Precision Flexible Shaft Couplings

Also called double-loop couplings, these have a flexible center that reduces vibration and compensates for high parallel and angular shaft misalignment.

Servomotor Precision Flexible Shaft Couplings

Able to handle high twisting forces as well as misalignment, these couplings are good for high-performance servomotor applications.

High-Speed Precision Flexible Shaft Couplings

With a bellows between two hubs, these couplings handle all types of misalignment and are good for precision stepper and encoder motion-control applications.

High-Speed Servomotor Precision
Flexible Shaft Couplings

Connect shafts and ball screws to high-speed servomotors and stepper motors—these shaft couplings handle four times more speed than standard servomotor couplings.

Electrically Isolating Servomotor
Precision Flexible Shaft Couplings

An acetal plastic spacer at the center of these couplings insulates bearings, encoders, and other shaft components from stray electric current. Use them with servomotors, which sometimes generate current that travels down the shaft and can damage circuit boards, interfere with readings, and cause wear on bearing raceways.

Set Screw Flexible Shaft Couplings

Each hub includes a set screw (unless noted), which bites into your shaft to hold the coupling in place.

Clamping High-Parallel-Misalignment
Flexible Shaft Couplings

Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft.

Set Screw High-Parallel-Misalignment
Flexible Shaft Couplings

Each hub includes a set screw, which bites into your shaft to hold the coupling in place.

High-Angular-Misalignment Flexible Shaft Couplings

Also known as Schmidt couplings, these handle higher angular misalignment than other three-piece couplings. Good for applications with varying shaft misalignment, they're commonly used with conveyor rollers and roller feeds in printing and packaging machines.

Cleaned and Bagged Flexible Shaft Couplings

Often used in electronics manufacturing facilities and other extra-clean environments, these shaft couplings are cleaned and individually bagged to keep out contaminants.

Lightweight Flexible Shaft Couplings

Made with lightweight nylon sleeves, these gear couplings require less energy to move than other high-torque flexible couplings. They compensate for parallel, angular, and axial misalignment.

Rigid Shaft Couplings

Clamping Shaft Couplings

Designed to grip evenly around your shaft, clamping couplings provide more holding power than set screw couplings without marring the shaft.

Machinable-Bore Clamping Shaft Couplings

When one of your shafts is undersized from wear, oversized from coatings, or uncommonly sized, machine one end of these couplings to fit. They clamp around your shafts for a secure hold that won’t cause damage.

Set Screw Shaft Couplings

Set screws bite into your shaft to hold these couplings in place.

Two-Piece Shaft Couplings

Install and remove these shaft couplings without disconnecting the shafts, motors, and other attached components—they’re made in two pieces so you don’t need to slide them onto shaft ends. They’re also useful when you have limited access to the ends of the shafts.

Three-Piece Shaft Couplings

Access one shaft without disconnecting the other. These rigid couplings have a solid bottom that connects the shafts and two top pieces that clamp the shafts independently.