12mm Bearings | McMaster-Carr

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System of Measurement

Shaft Diameter

1/4" to 1 3/16"

5/16" to 11/32"

3/4" to 1 3/16"

1 1/8" to 2 3/4"

1 3/16" to 1 5/8"

1 3/8" to 1 7/8"

1 3/4" to 2 1/4"

2 1/4" to 4 3/8"

2 3/8" to 6 1/8"

3 7/8" to 7 7/8"

OD

Width

Bearing Seal Type

Bearing Trade Number

Ball Bearing Profile

With Retaining Ring

ID

Material

Stainless Steel

Bearing Construction

Cage Material

Stainless Steel

Bearing Type

For Load Direction

Combined Radial and Thrust

For Housing ID

19.000 mm to 19.021 mm

21.000 mm to 21.021 mm

22.000 mm to 22.021 mm

22.000 mm to 22.018 mm

22.000 mm to 22.026 mm

22.020 mm to 22.053 mm

23.000 mm to 23.021 mm

Ball Material

Stainless Steel

Maximum Rotation Speed

ABEC Rating

Lubrication

Shaft Mount Type

Shaft Type

Round with Support Rail

Length

REACH

Export Control Classification Number (ECCN)

RoHS

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

DFARS Specialty Metals

How can we improve?

479 Products

Ball Bearings

Ball Bearings

The balls roll nearly friction-free for smooth movement between rotating parts

Permanently Lubricated Ball Bearings

Permanently Lubricated Ball Bearings

Solid lubricant releases oil over time so you never need to add more

Angular Contact Ball Bearings

Angular Contact Ball Bearings

Support radial and thrust loads at the same time

Flanged Ball Bearings

Flanged Ball Bearings

The flange presses against a housing wall so thrust loads won't knock them off-kilter

Ball Bearings for Food and Beverage

Ball Bearings for Food and Beverage

The FDA-compliant lubricant is safe for food-processing areas

Self-Aligning Ball Bearings

Self-Aligning Ball Bearings

The balls rock back and forth to compensate for misalignment

Dry-Running Flanged Ball Bearings

Dry-Running Flanged Ball Bearings

Don't risk your bearing popping out of place or making a mess

High-Load Dry-Running Ball Bearings

High-Load Dry-Running Ball Bearings

Carry twice as much weight as standard dry-running ball bearings

Electrical Insulating Ball Bearings

Electrical Insulating Ball Bearings

Ceramic balls insulate against stray currents that can damage bearings

Ball Bearings with Retaining Ring

Ball Bearings with Retaining Ring

Install without complicated tools

High-Temperature Graphite-Lubricated Ball Bearings

High-Temperature Graphite-Lubricated Ball Bearings

Keep parts spinning in industrial ovens and other places as hot as 660° F

High-Precision Angular Contact Ball Bearings

High-Precision Angular Contact Ball Bearings

Our most precise bearings for tackling radial and thrust loads at once

One-Way-Locking Ball Bearings

One-Way-Locking Ball Bearings

Prevent shafts from reversing direction

Dry-Running Ball Bearings

Dry-Running Ball Bearings

Made of slippery plastic so there's no lubricant to maintain or make a mess

Other Products

Sleeve Bearings

Sleeve Bearings

With no moving parts, the plainest type of bearing

Mounted Bearings

Mounted Bearings

Ball, roller, and sleeve bearings ready to bolt in place

Roller Bearings

Roller Bearings

Support higher loads than ball bearings, but run at lower speeds

Flanged Sleeve Bearings

Flanged Sleeve Bearings

A sleeve and thrust bearing in one to support both parallel and perpendicular loads

Thrust Bearings

Thrust Bearings

Support loads parallel to the shaft with plain, ball, or roller bearings

Linear Bearings

Linear Bearings

Minimize friction as parts move along a shaft

Track Rollers

Support and carry objects as they move along conveyor systems

Thrust Roller Bearing Washers

Thrust Roller Bearing Washers

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

Roller Bearing Shaft Liners

Roller Bearing Shaft Liners

Adapt precision needle-roller bearings for use on unhardened, unground shafts

Pulley and Sprocket Bushings

Pulley and Sprocket Bushings

Mount between a rotating shaft and equipment to secure the shaft and reduce vibration

Drive Rollers

Transmit power from motors to systems like conveyors; also known as contact wheels and feed rollers

Linear Bearing Brakes

Linear Bearing Brakes

Lock bearings in place on a shaft for precise positioning

Bore Reducers

Adapt the bore of a component to a smaller size for mounting on a shaft

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)