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Bearing designation

Closure group

Brand

SKF57KOYO12NSK4

Product family

Super-precision angular contact ball bearings57Angular contact ball bearings4Matched pair / back-to-back / with machined cage3Matched pair / face-to-face / with machined cage3Matched pair / tandem / with machined cage3Single-row / with machined cage3

Detailed product type

Matched set of two super-precision, high-capacity, d design, single row angular contact ball bearings19Angular contact ball bearings16Matched set of three super-precision, high-capacity, d design, single row angular contact ball bearings8Super-precision, high-capacity, universally matchable single row angular contact ball bearing8Matched set of two super-precision, high-speed e design, single row angular contact ball bearings7Super-precision, high-speed e design, universally matchable single row angular contact ball bearing6Matched set of four super-precision, high-speed e design, single row angular contact ball bearings2Super-precision angular contact ball bearing, universally matchable2Super-precision, high-capacity, single row angular contact ball bearing2Matched set of four super-precision, high-capacity, d design, single row angular contact ball bearings1Matched set of three super-precision, high-speed e design, single row angular contact ball bearings1Super-precision, high-speed e design, universally matchable single row angular contact ball bearing suitable for direct oil-air lubrication1

Bearing dimensions

Minimum and maximum (mm)

Inside d

Outside D

Width B

Height H

Technical attributes

Sealing2RS vs ZZ selection guide →

Without55

Cage

Pressed steel4

Bearing material