30mm 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

ID

Bearing Construction

Ball Bearing Profile

With Retaining Ring

Bearing Type

Cage Material

Stainless Steel

For Load Direction

Combined Radial and Thrust

Combined Radial, Thrust, and Moment

Material

863 Iron Copper

Stainless Steel

Ball Material

Stainless Steel

For Housing ID

40.000 mm to 40.025 mm

45.000 mm to 45.025 mm

47.000 mm to 47.021 mm

47.000 mm to 47.025 mm

47.000 mm to 47.030 mm

47.004 mm to 47.037 mm

47.025 mm to 47.064 mm

Shaft Mount Type

Maximum Rotation Speed

Shaft Type

Round with Support Rail

Radial Clearance Trade Number

Lubricant

ABEC Rating

RoHS

Export Control Classification Number (ECCN)

REACH

DFARS Specialty Metals

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

How can we improve?

289 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

Self-Aligning Ball Bearings

Self-Aligning Ball Bearings

The balls rock back and forth to compensate for misalignment

Electrical Insulating Ball Bearings

Electrical Insulating Ball Bearings

Ceramic balls insulate against stray currents that can damage bearings

Ball Bearings for Food and Beverage

Ball Bearings for Food and Beverage

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

Flanged Ball Bearings

Flanged Ball Bearings

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

High-Load Dry-Running Ball Bearings

High-Load Dry-Running Ball Bearings

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

Ball Bearings with Retaining Ring

Ball Bearings with Retaining Ring

Install without complicated tools

Dry-Running Ball Bearings

Dry-Running Ball Bearings

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

High-Precision Angular Contact Ball Bearings

High-Precision Angular Contact Ball Bearings

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

Insert Bearings

Insert Bearings

Swap out worn inserts instead of replacing the entire mounted unit

Quick-Mount Ball Bearings

Quick-Mount Ball Bearings

Slip onto a shaft and secure with the turn of a screw

One-Way-Locking Ball Bearings

One-Way-Locking Ball Bearings

Prevent shafts from reversing direction

Tapered-Bore Ball Bearings

Tapered-Bore Ball Bearings

Mount on tapered shafts

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

Other Products

Roller Bearings

Roller Bearings

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

Mounted Bearings

Mounted Bearings

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

Flanged Sleeve Bearings

Flanged Sleeve Bearings

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

Sleeve Bearings

Sleeve Bearings

With no moving parts, the plainest type of bearing

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

Pulley and Sprocket Bushings

Pulley and Sprocket Bushings

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

Thrust Roller Bearing Washers

Thrust Roller Bearing Washers

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

Bearing Adapter Sleeves

Bearing Adapter Sleeves

Close gaps between your bearing and shaft for a tight fit

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