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Miniature Ball Bearing



Miniature Ball bearings are sometimes referred to as instrument bearings or micro bearings, which are tiny machined components that include an outer ring, inner ring, balls, retainers, shields, and snap calls. Miniature ball bearings are available in inch and metric sizes, open or shielded and flanged or without flange. Miniature ball bearings are applicable in a wide variety of applications.

Miniature Ball Bearing

Bearing Series:  602, 623, 635, 617/2, 618/1, 619/1

Seals/Shields: OPEN, Z, ZZ, RS, 2RS

Material: Chrome Steel SAE52100/100Cr6/GCr15, Stainless Steel 420 and 440, Ceramic Si3N4 and Zr02

Quality:  ABEC 1, ABEC3, ABEC5, ABEC7

Applications and industry: Agriculture, Automobile, Cement Industry, Crusher Industry, Heavy Machinery Equipment, Household Appliances, Mining Industry, Metal Industry, Fluid Machinery, Textile Industry.


Technical Data

Inside Ø (mm): 8
Outside Ø (mm): 22
Width (mm): 7
Tolerance for inside-Ø (mm): 0/-0,008
Tolerance for outside-Ø (mm): 0/-0,009
Tolerance for width (mm): 0/-0,12
Rows Of Balls: single row
Seal: ZZ
Internal Clearance: CN (Standard)
Flange: no
Slot & Snap Ring: no
Ring Material: Rolling bearing steel
Rolling Element Material: Rolling bearing steel
Cage Material: Sheet Steel
Complete Complement Ball Set: no
Magnetic: JA
Type of lubrication: greased
Lifetime lubricated: yes
Product weight: 12 g


  • miniature ball bearing with the most diminutive dimensions
  • suitable for high radial loads and light axial loads in both directions
  • ideal for high running accuracy, quiet running, and very high speeds
  • seal: non-contact gap seal on both sides made of a profiled sheet steel disc (ZZ / 2Z) for higher rates than with a rubber seal
  • suitable fixed bearing property, but can also be used as a floating bearing, each in both directions