Locking Bearings | McMaster-Carr

	System of Measurement System of Measurement

Metric

Inch

	For Shaft Diameter For Shaft Diameter

	Thread Size Thread Size

	Thread Pitch Thread Pitch

	Width Width

	OD OD

	ID ID

	Mounted Bearing Type Mounted Bearing Type

	Base Mount
	Two-Bolt Flange Mount
	Four-Bolt Flange Mount

	Bearing Type Bearing Type


Ball	Roller

	Shaft Mount Type Shaft Mount Type

Press Fit

Eccentric Lock

Concentric Lock

	Nut Type Nut Type


Locknut	Round

	Material Material

Steel

Stainless Steel

	Seal Type Seal Type

Sealed

Open

Shielded

	Maximum Speed Maximum Speed

20,000 rpm or greater

	For Housing ID For Housing ID

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

DFARS Specialty Metals
COTS-Exempt

	Thread Type Thread Type

Metric

UNS

Metric Trapezoidal

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

RoHS Compliant

	Dynamic Radial Load Capacity Dynamic Radial Load Capacity

10,000 lbs. or greater

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

REACH Compliant

	Maximum Torque Maximum Torque

	Spring Material Spring Material

Stainless Steel

Plastic

Steel

	Mounting Hole Center-to-Center Mounting Hole Center-to-Center

Forward

How can we improve?

484 Products

Power Transmission

One-Way Locking Needle-Roller Bearing Clutches

The needles in these bearings roll freely in one direction, but lock to transmit torque when the rotation of the shaft is reversed. Also known as drawn-cup roller clutches.

One-Way Locking Ball Bearing Clutches

Internal locking elements (sprags) lock to transmit torque in one direction while turning freely in the other direction.

Insert Bearings

Swap out worn inserts instead of replacing the entire mounted unit.

Washdown Mounted Ball Bearings

Meeting IP69K for washdown environments, these mounted ball bearings are used in food, beverage, pharmaceutical, and chemical plants.

Mounted Ball Bearings

Ball bearings operate with less friction than other bearings, so they can run at higher speeds.

Permanently Lubricated Washdown
Compact-Base Mounted Ball Bearings

These bearings are rated IP69K as able to withstand washdown environments such as food, pharmaceutical, and chemical plants. Their fluoropolymer-coated housing is as corrosion resistant as 304 steel and safe for contact with food.

Compact-Base Mounted Ball Bearings

Also known as tapped-base bearings, these ball bearings mount to surfaces from the bottom through threaded holes. Because of their narrow profile, they’re commonly used in tight-clearance spaces, including systems where multiple shafts are mounted close together.

Mounted Ball Bearings with Two-Bolt Flange

Ball bearings operate with less friction than other bearings, so you can run them at higher speeds.

Permanently Lubricated Washdown
Mounted Ball Bearings with Two-Bolt Flange

Permanently lubricated and IP69K certified for washdown environments, these mounted ball bearings are useful for hard-to-reach areas in food, beverage, pharmaceutical, and chemical plants. Mount them using their two-bolt flange.

Permanently Lubricated Washdown
Mounted Ball Bearings with Four-Bolt Flange

Made to withstand frequent washdowns, these bearings are permanently lubricated, which means you’ll never have to add lubricant. Use them in hard-to-reach areas in food, beverage, pharmaceutical, and chemical plants.

Mounted Ball Bearings with Four-Bolt Flange

A bolt in each corner makes for a secure, even hold.

Bearing Retaining Locknuts

With a nylon insert that grips your threaded shaft or spindle without damaging its threads, these locknuts—also called shaft nuts—hold bearings, bushings, gears, and pulleys prone to vibration tightly in place.

Bearing Retaining Nuts

Often paired with spring lock washers to strengthen their hold, these retaining nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle.

Bearing Retaining Jam Nuts

Used in pairs or with another bearing retaining nut, these jam nuts—often called shaft nuts—hold bearings, bushings, pulleys, and gears in place on your threaded shaft or spindle.