31 mm OD Bearings | McMaster-Carr

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System of Measurement

Shaft Diameter

OD

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 8 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"

Width

For Load Direction

Combined Radial, Thrust, and Moment

ID

Shaft Type

For Housing ID

Ball Material

52100 Alloy Steel

Bearing Type

Cage Material

Bearing Seal Type

Thickness

Diameter

Dynamic Thrust Load Capacity

Less than 10,000 lb.

For Motion

Shaft Mount Type

Maximum Rotation Speed

Length

Static Thrust Load Capacity

Less than 10,000 lb.

Flange OD

Ball Bearing Profile

Export Control Classification Number (ECCN)

DFARS Specialty Metals

RoHS

REACH

How can we improve?

12 Products

Power Transmission

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

Thrust Roller Bearing Washers

Thrust Roller Bearing Washers

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

Ball Screw/Splines and Bearings

Ball Screw/Splines and Bearings

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

Ball Spline Bearings

Ball Spline Bearings

Pair with ball splines for applications requiring complex, fast movements, such as robotics

Fabricating and Machining

Drill Bushings

Fit in holes to guide drill bits and other cutting tools for precise and repeatable holes and cuts

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