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Stainless steel miniature bearings for shaft sizes from 0.04" to 1.00".An imperial stainless steel miniature bearing

SMB Bearings provide stainless steel miniature ball bearings and small ball bearings with bore sizes as small as 0.04” from stock in the UK. Stainless steel provides corrosion resistance. We also supply corrosion resistant miniature bearings in POM/acetal resin and other materials.


The smaller sizes are sometimes referred to as instrument bearings or micro bearings. We provide inch sizes for applications as varied as gyros, anemometers, medical or dental instruments and fishing reels.

These inch miniature ball bearings are manufactured in AISI440C or KS440 stainless steel and can withstand heavy radial loads and moderate thrust loads in both directions.  Many sizes are available with an extended inner ring. Some can also be supplied with Teflon seals.

For chrome steel miniature bearings, click on the “Chrome” tab below.

For corrosion resistant,
stainless steel flanged miniature bearings, click on the “Stainless Flanged” tab below.

Stainless Flanged Chrome Flanged Chrome >>Back to the Top
Stainless

BORE

(inch)

O.D.

(inch)

OPEN BEARING

SHIELDED BEARING

SEALED BEARING

WIDTH

(inch)

SMB REFERENCE

MORE INFO

WIDTH

(inch)

SMB REFERENCE

MORE INFO

WIDTH

(inch)

SMB REFERENCE

MORE INFO

0.04

0.125

0.0469

SR09

info







0.0469

0.1562

0.0625

SR0

info

0.0937

SR0ZZ

info




0.055

0.1875

0.0781

SR1

info

0.1094

SR1ZZ

info




0.0781

0.25

0.0937

SR1-4

info

0.1406

SR1-4ZZ

info




0.0937

0.1875

0.0625

SR133

info

0.0937

SR133ZZ

info




0.3125

0.1094

SR1-5

info

0.1406

SR1-5ZZ

info




0.125

0.25

0.0937

SR144

info

0.1094

SR144ZZ

info

0.1094

SR144-TTS

info

0.25




0.0937

SR144ZZW09

info




0.3125

0.1094

SR2-5

info

0.1406

SR2-5ZZ

info

0.1406

SR2-5-TTS

info

0.3125




0.1094

SR2-5ZZW10

info




0.375

0.1094

SR2-6

info

0.1406

SR2-6ZZ

info

0.1406

SR2-6-TTS

info

0.375




0.1094

SR2-6ZZW10

info




0.375

0.1562

SR2

info

0.1562

SR2ZZ

info

0.1562

SR2-2RS

info

0.5

0.1094

SR184

info

0.1094

SR184ZZ

info




0.5

0.1719

SR2A

info

0.1719

SR2AZZ

info

0.1719

SR2A-2RS

info

0.1562

0.3125

0.1094

SR155

info

0.125

SR155ZZ

info

0.125

SR155-TTS

info

0.1875

0.3125

0.1094

SR156

info

0.125

SR156ZZ

info

0.125

SR156-TTS

info

0.375

0.125

SR166

info

0.125

SR166ZZ

info

0.125

SR166-TTS

info

0.5

0.1562

SR3

info

0.196

SR3ZZ

info

0.196

SR3-2RS

info

0.5




0.1562

SR3ZZW15

info

0.1562

SR3-2RSW15

info

0.25

0.375

0.125

SR168

info

0.125

SR168ZZ

info

0.125

SR168-TTS

info

0.5

0.125

SR188

info

0.1875

SR188ZZ

info

0.1875

SR188-TTS

info

0.5




0.125

SR188ZW12

info




0.625

0.196

SR4

info

0.196

SR4ZZ

info

0.196

SR4-2RS

info

0.75

0.2188

SR4A

info

0.2812

SR4AZZ

info

0.2812

SR4A-2RS

info

0.3125

0.5

0.1562

SR1810

info

0.1562

SR1810ZZ

info

0.1562

SR1810-TTS

info

0.625




0.1562

SR1810AZZ

info




0.375

0.625

0.1562

SR1038

info

0.1562

SR1038ZZ

info

0.1562

SR1038-TTS

info

0.875

0.2188

SR6

info

0.2812

SR6ZZ

info

0.2812

SR6-2RS

info

0.5

0.75

0.1562

SR1212

info

0.1562

SR1212ZZ

info

0.1562

SR1212-TTS

info

0.75




0.196

SR1212ZZW19

info




0.875

0.2188

SR6-1/2

info

0.2812

SR6ZZ-1/2

info




1.125

0.25

SR8

info

0.3125

SR8ZZ

info

0.3125

SR8-2RS

info

0.625

0.875

0.1562

SR1458

info

0.1562

SR1458ZZ

info

0.1562

SR1458-TTS

info

1.375

0.2812

SR10

info

0.3438

SR10ZZ

info

0.3438

SR10-2RS

info

0.75

1.0

0.1562

SR1634

info

0.1562

SR1634ZZ

info

0.1562

SR1634-TTS

info

1.625

0.3125

SR12

info

0.4375

SR12ZZ

info

0.4375

SR12-2RS

info

0.875

1.875

0.375

SR14

info

0.50

SR14ZZ

info

0.50

SR14-2RS

info

1.0

2.0

0.375

SR16

info

0.50

SR16ZZ

info

0.50

SR16-2RS

info

Stainless Steel Miniature Bearings - Inch