Motor Shafts | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Diameter Diameter

	Length Length

	End Type End Type


Straight	Keyed

D-Profile	Threaded

Made to Order	Tapped

Step Down	Splined

Hollow	With Retaining Ring Grooves

	Material Material

Steel

Stainless Steel

Aluminum

	Mechanical Finish Mechanical Finish

Precision Ground

Polished

Turned

	Edge Type Edge Type


Chamfered	Straight

	For Motion Type For Motion Type

	Rotary
	Linear
	Linear and Rotary

	Hardness Rating Hardness Rating

	Hardness Hardness

	Thread Size Thread Size

	Yield Strength Yield Strength

100,000 psi or greater

Not Rated

	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

RoHS Compliant with
Exemptions

	Keyway Length Keyway Length

	Keyway Width Keyway Width

	Heat Treatment Heat Treatment

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

REACH Compliant

	Surface Smoothness Surface Smoothness

	Keyway Depth Keyway Depth

	Thread Length Thread Length

	Surface Yield Strength Surface Yield Strength

	Finish Finish

4,793 Products

About Shafts

Keyed Rotary Shafts

Combine with a machine key to transmit torque to gears, sprockets, and other power transmission components.

Partially Keyed Rotary Shafts

These shafts have keyways only on the ends, leaving a plain shaft in the center. Use the keyways with machine keys to transmit torque to gears, sprockets, and other keyed components. Use the middle of the shaft with bearings and other round-bore components.

Keyed Rotary Shafts with Material Certification

In addition to diameter tolerances that are twice as tight as standard keyed shafts, these shafts include a traceable lot number and test report. Use them with machine keys to transmit torque to gears, sprockets, and other power transmission components.

Rotary Shafts

Use these general purpose shafts with bearings, sprockets, and gears to transmit rotary motion.

Ultra-Straight Tight-Tolerance Rotary Shafts

Eight times straighter than standard rotary shafts, these tight-tolerance shafts minimize vibrations and reduce wear to bearings and other components. They also have diameter tolerances that are twice as tight as standard rotary shafts.

D-Profile Rotary Shafts

A flat surface area allows set screws to dig into the shaft for securely mounting gears, sprockets, and bearings.

Tapped D-Profile Rotary Shafts

Connect these internally threaded shafts directly to threaded components, or use a fastener to secure. They have a flat surface area that allows set screws to dig into the shaft for securely mounting gears, sprockets, and bearings.

Flange-Mount Idler Rotary Shafts

Mount the flange to a machine or wall to support idler sprockets and pulleys in tensioning applications. They include washers and a nut to position your component and hold it in place.

Thread-Mount Idler Rotary Shafts

Thread these shafts into a tapped hole to support idler sprockets and pulleys in tensioning applications. They have a retaining-ring groove, retaining ring, and spacers to position your component and hold it in place.

Step-Down Rotary Shafts

A shoulder near the end of the shaft provides a stop for gears, sprockets, and bearings.

Threaded Rotary Shafts

Attach threaded accessories, such as mixer propellers and fan blades, to the end of these shafts.

Tapped Rotary Shafts

Connect these internally threaded shafts directly to threaded components, or use a fastener to secure.

Splined Rotary Shafts

With a splined profile on one end, these shafts transmit high rotational loads—good for hydraulic systems, machine tools, and other high-torque applications. Compared to keyed shafts, they last longer, handle higher torque, and do not require as tight of a fit.

Rotary Shafts with Retaining Ring Grooves

Clip retaining rings into the grooves to separate and position gears, sprockets, and bearings.

Linear Motion Shafts

Combine these general purpose shafts with a linear bearing and shaft support to create a basic linear motion system.

Hollow Linear Motion Shafts

Lighter than solid shafts, hollow shafts reduce your total system weight and allow you to run various media such as electrical wiring, compressed air tubing, coolants, or lubricants through the center.

Hollow Linear Motion Shafts with Material Certification

Keep a material certificate on hand for compliance and quality assurance needs. Certificates include a traceable lot number and material test report. These hollow shafts reduce system weight and allow you to run various media such as electrical wiring, compressed air tubing, coolants, or lubricants through the center.

Threaded Linear Motion Shafts

Mount these externally threaded shafts into tapped holes rather than using a shaft support, or attach a hex nut, shaft collar, or other threaded accessory.

Tapped Linear Motion Shafts

Internal threads allow you to mount these shafts onto threaded studs and fasteners, no shaft supports needed.

Linear Motion Shafts with Retaining Ring Grooves

Clip retaining rings into the grooves to separate and position collars, supports, and housings.

Linear Motion Shafts with Machinable Ends

With 2" of each end softened, it's easier to machine a custom end for mounting. The rest of the shaft is case-hardened, which increases hardness and wear resistance on the surface of the shaft while allowing the center to remain soft for absorbing stresses caused by shifting loads.

Step-Down Linear Motion Shafts

A shoulder near the end of the shaft allows for easy positioning of housings, shaft supports, and collars.

Support-Rail Shafts

These shafts include a support rail for a stable setup that eliminates bending and prevents linear bearings from rotating.

Shafts for Support Rails

Replace worn shafts in two-piece support-rail shaft systems, or mate with a support rail to create your own. The tapped mounting holes match those on our Support Rails.

Splined Shafts for Rotary and Linear Motion

Grooves on the surface of these shafts transmit rotary power while allowing bearings to move freely along the length of the shaft.

Flexible Shafts

Made of steel, these shafts are stronger than stainless steel flexible shafts.

Heavy Duty Flexible Shafts

With a strong steel core, a protective plastic case, and bearings, these shafts handle the demands of high-torque applications.

Corrosion-Resistant Flexible Shafts

These stainless steel shafts are more corrosion resistant than steel models.

Plug-In Shafts for Flexible-Mount Right-Angle Speed Reducers

Plug-In Shafts for Flexible-Mount
Right-Angle Speed Reducers

Convert output drives from female to male.

Handles and Knobs

Trigger-Lever Push/Pull Control Cables

Control these flexible, ready-to-use cables with the attached trigger-style spring-return lever. Weave them around obstructions to operate valves, throttle controls, and HVAC damper controls from a distance.

Low-Friction Create-Your-Own Push/Pull Control Cables

A splined core limits contact points on the cable’s liner, so the core slides back and forth smoothly and keeps the cable from twisting. Pair these cables with a knob or lever to operate valves, throttle controls, and HVAC damper controls from a distance. They're flexible for weaving around obstructions.

Pull Control Cables

Similar to the brake cable on a bicycle, these cables exert pulling force so you can control components such as latches, release valves, and brakes.

Corrosion-Resistant Create-Your-Own
Push/Pull Control Cables

Well-suited for damp environments, these control cables have stainless steel fittings for excellent corrosion resistance. Pair them with a knob or lever to operate valves, throttle controls, and HVAC damper controls from a distance. They're flexible for weaving around obstructions.

Push/Pull Control Cables

Use the attached knob to control these flexible, ready-to-use cables. Weave them around obstructions to operate valves, throttle controls, and HVAC damper controls from a distance.

Turn-Lock Push/Pull Control Cables

Pull and turn the knob to lock, so it's secure in applications where severe vibration is a concern. Flexible for weaving around obstructions, these ready-to-use cables operate valves, throttle controls, and HVAC damper controls from a distance.

Precision Turn-Lock Push/Pull Control Cables

Use these cables for high-precision motion control. Tighten the locknut to secure your setting in applications where severe vibration is a concern. Flexible for weaving around obstructions, these ready-to-use cables operate valves, throttle controls, and HVAC damper controls from a distance.

Create-Your-Own Push/Pull Control Cables

Pair these cables with a knob or lever to operate valves, throttle controls, and HVAC damper controls from a distance. They're flexible for weaving around obstructions.