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Designation Brand Category Inside dmm Outside Dmm Width Bmm

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ABEC equivalent (radial ball bearings)Understand the mapping and its limits →

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Bearing designation

Closure group

Brand

SKF28KOYO24FAG12NSK9

Product family

Super-precision angular contact ball bearings25Angular contact ball bearings9Angular contact ball bearings3Matched pair / back-to-back / with machined cage3Matched pair / back-to-back / with pressed cage3Matched pair / face-to-face / with machined cage3Matched pair / face-to-face / with pressed cage3Matched pair / tandem / with machined cage3Matched pair / tandem / with pressed cage3Single-row / with machined cage3Single-row / with pressed cage3

Detailed product type

Angular contact ball bearings45Matched set of two super-precision, high-capacity, d design, single row angular contact ball bearings13Super-precision, high-capacity, universally matchable single row angular contact ball bearing8Single row angular contact ball bearing3Super-precision, high-capacity, single row angular contact ball bearing3Matched set of three super-precision, high-capacity, d design, single row angular contact ball bearings1

Bearing dimensions

Minimum and maximum (mm)

Inside d

Outside D

Width B

Height H

Technical attributes

Series

720112

Sealing2RS vs ZZ selection guide →

Without28Without — Not sealed82RS — Contact seal on both sides4

Precision class