Inner Rings | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	For Shaft Diameter For Shaft Diameter

	OD OD

	ID ID

	Width Width

	Bearing Type Bearing Type


Roller	Ball

	For Load Direction For Load Direction

	Radial
	Combined Radial and Thrust
	Thrust

	Seal Type Seal Type

Open

Sealed

Shielded

	For Housing ID For Housing ID

	Ball Bearing Type Ball Bearing Type

With Retaining Ring

Flanged

Standard

	For Shaft Type For Shaft Type


Round	Hex

	Dynamic Radial Load Capacity Dynamic Radial Load Capacity

10,000 lbs. or greater

	Shaft Mount Type Shaft Mount Type

	Lubrication Lubrication

Required

Lubricated

Not Required

	Maximum Speed Maximum Speed

40,000 rpm or greater

	Cage Material Cage Material

	Thickness Thickness

	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

	Ring Material Ring Material

Steel

Stainless Steel

	Mounted Bearing Type Mounted Bearing Type


Base Mount	Two-Bolt Flange Mount

	Static Radial Load Capacity Static Radial Load Capacity

Less than 10,000 lbs.

10,000 to 19,999 lbs.

20,000 to 29,999 lbs.

30,000 to 99,999 lbs.

100,000 lbs. or greater

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

REACH Compliant

Forward

How can we improve?

642 Products

About Ball and Roller Bearings

Shaft Liners for Precision Needle-Roller Bearings

Adapt high-precision needle-roller bearings to use on unhardened, unground shafts.

Needle-Roller Bearings

Also known as drawn-cup roller bearings, these are our thinnest roller bearings. The outer ring is drawn out to form a lip that holds the bearing together.

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.

Precision Needle-Roller Bearings

These bearings have higher radial load capacity, speed, and accuracy than standard needle-roller bearings.

Washers for Needle-Roller Thrust Bearings

Adapt needle-roller thrust bearings to use on unhardened, unground surfaces.

Needle-Roller Thrust Bearings

Thinner rollers allow these bearings to fit in tighter spaces than tapered-roller thrust bearings.

Combination Ball/Needle-Roller Bearings

A built-in thrust ball bearing reduces wear from adjacent shaft components, while the needle-roller bearing supports radial loads.

Ball Bearings

Flanged Ball Bearings

The flange ensures proper positioning inside a tube or housing.

Stainless Steel Ball Bearings

Bearings are 440C stainless steel for good corrosion resistance.

High-Load Ball Bearings

Wider than our standard ball bearings, these rugged bearings are good for handling heavy loads at low speeds.

Hex-Bore Ball Bearings

Mount these bearings onto a hex shaft.

Set Screw Collar Ball Bearings

Slip these bearings onto a shaft and secure with the included set screws, no special tools required.

Clamp-On Collar Ball Bearings

Quickly secure these bearings onto shafts with the clamp-on collar for a concentric, mar-free hold.

Washdown Set Screw Collar Ball Bearings

Secure these bearings in washdown areas, such as food, beverage, pharmaceutical, and chemical plants, by tightening the set screw onto a shaft—no additional collar needed.

Washdown Clamp-On Collar Ball Bearings

Designed to stand up to frequent washdowns, you can quickly secure these ball bearings onto shafts with the clamp-on collar in food, beverage, pharmaceutical, and chemical plants. The collar centers your shafts and secures them better than set screw ball bearings, which reduces vibration and noise.

Mounted Bearings

Mounted Roller Bearings

Roller bearings have a thinner profile and larger contact area than ball bearings, making them stronger and more space-efficient than ball bearings.

Low-Profile Mounted Ball Bearings

Designed with a thin, compact housing, these bearings are good for space-constrained applications.

Mounted Roller Bearings with Two-Bolt Flange

These roller bearings handle extremely high speeds for their small size.