2 1/2" ID Bearings | McMaster-Carr

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System of Measurement

Shaft Diameter

OD

ID

1 1/4" to 4 1/4"

2 3/4" to 5 1/2"

3 3/4" to 6 1/4"

7 3/4" to 23 1/4"

8 3/4" to 19 3/4"

11 1/2" to 29 1/4"

Width

Bearing Seal Type

Bearing Type

For Load Direction

Combined Radial and Thrust

Combined Radial, Thrust, and Moment

For Housing ID

3.7500" to 3.7510"

Shaft Mount Type

Mounted Bearing Type

Four-Bolt Flange Mount

Dynamic Radial Load Capacity

Less than 10,000 lb.

10,000 lb. to 19,999 lb.

Bearing Trade Number

Static Radial Load Capacity

Less than 10,000 lb.

10,000 lb. to 99,999 lb.

200,000 lb. to 299,999 lb.

Bearing Construction

Material

863 Iron Copper

Molybdenum Disulfide

Stainless Steel

Inner Ring Type

Ball Bearing Profile

With Retaining Ring

Cage Material

Center Height

ABEC Rating

Lubricant

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

RoHS

Compliant with Exemptions

How can we improve?

74 Products

Power Transmission

Ball Bearings

Create less friction than other bearings for use at high speeds

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

Thrust Bearings

Thrust Bearings

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

Roller Bearing Shaft Liners

Roller Bearing Shaft Liners

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

Sleeve Bearings

Sleeve Bearings

With no moving parts, the plainest type of bearing

Linear Bearings

Linear Bearings

Minimize friction as parts move along a shaft

Swivel Joints

Handle shaft misalignment where ball joint rod ends won’t fit; also known as spherical bearings

Pulley and Sprocket Bushings

Pulley and Sprocket Bushings

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

Raw Materials

Bronze

Better wear resistance than copper and brass—all with material certificates for traceability

Plastic

A lightweight alternative to metal and glass

Steel

Strong, machinable, and weldable—all with material certificates for traceability

Fastening and Joining

Shims

Align and space components on shafts, or level machinery, cabinets, and doors

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.)