21 mm OD Bearings | McMaster-Carr

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System of Measurement

Shaft Diameter

OD

0.1562" to 2.7500"

1/2" to 3 3/16"

1/2" to 20 1/2"

3/4" to 13 3/4"

7/8" to 11 7/8"

7/8" to 14 3/4"

7/8" to 23 5/8"

1 1/32" to 9 7/8"

1 1/32" to 11 1/32"

1 1/32" to 11 7/8"

1 1/4" to 4 1/2"

1 1/2" to 4 1/4"

1 1/2" to 11 7/8"

1 1/2" to 15 3/4"

1 1/2" to 17 3/4"

1 1/2" to 19 3/4"

2 1/4" to 7 1/4"

2 1/4" to 15 3/4"

2 1/2" to 5 3/4"

2 3/4" to 9 1/2"

3 1/4" to 11 3/4"

4 1/4" to 14 3/4"

4.0000 mm to 69.0000 mm

Width

Bearing Seal Type

For Housing ID

21.000 mm to 21.021 mm

Ball Bearing Profile

Bearing Type

ID

For Load Direction

Combined Radial and Thrust

Combined Radial, Thrust, and Moment

Cage Material

Stainless Steel

Ring Material

Stainless Steel

Bearing Trade Number

Ball Material

Stainless Steel

Shaft Type

Round with Support Rail

Roller Bearing Type

Shaft Mount Type

Bearing Construction

Overall Length

Dynamic Radial Load Capacity

Less than 10,000 lb.

Inner Ring Type

Static Radial Load Capacity

Less than 10,000 lb.

Export Control Classification Number (ECCN)

REACH

DFARS Specialty Metals

RoHS

How can we improve?

60 Products

Power Transmission

Ball Bearings

Create less friction than other bearings for use at high speeds

Roller Bearings

Roller Bearings

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

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

Bearing Washers

Bearing Washers

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

Flanged Sleeve Bearings

Flanged Sleeve Bearings

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

Bearing Locknuts

Bearing Locknuts

Hold bearings, bushings, pulleys, and gears in place on threaded shafts and spindles

Ball Screw/Splines

Ball Screw/Splines

Transmit rotary power, move loads along the shaft, or do both at once

Splines and Spline Bearings

Splines and Spline Bearings

Transmit rotary power or move loads along the length of splines

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