ISO 492:2023
Rolling bearings — Radial bearings — Geometrical product specifications (GPS) and tolerance values
This document specifies dimensional and geometrical characteristics, deviation limits from nominal sizes, and tolerance values to define the interface (except chamfers) of radial rolling bearings. Nominal boundary dimensions are defined in ISO 15, ISO 355[2] and ISO 8443[4].
This document does not apply to certain radial bearings of particular types (e.g. needle roller bearings) or for particular fields of application (e.g. airframe bearings). Tolerances for such bearings are given in the relevant International Standards.
Chamfer dimension limits are given in ISO 582[3].
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
4.1 Symbols for physical quantities
4.2 Additional symbols
5 Graphical description
6 Deviation limits and tolerance values
6.1 General
6.2 Radial bearings except tapered roller bearings
6.2.1 Tolerance class Normal
6.2.2 Tolerance class 6
6.2.3 Tolerance class 5
6.2.4 Tolerance class 4
6.2.5 Tolerance class 2
6.3 Radial tapered roller bearings
6.3.1 Tolerance class Normal
6.3.2 Tolerance class 6X
6.3.3 Tolerance class 5
6.3.4 Tolerance class 4
6.3.5 Tolerance class 2
6.4 Radial bearings, outer ring flanges
6.5 Basically tapered bores, tapers 1:12 and 1:30
Annex A (informative) Background information on tVDsp and tVdsp for radial tapered roller bearings
Annex B (informative) Stiffness series for radial tapered roller bearings with boundary dimensions according to ISO 355
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
4.1 Symbols for physical quantities
4.2 Additional symbols
5 Graphical description
6 Deviation limits and tolerance values
6.1 General
6.2 Radial bearings except tapered roller bearings
6.2.1 Tolerance class Normal
6.2.2 Tolerance class 6
6.2.3 Tolerance class 5
6.2.4 Tolerance class 4
6.2.5 Tolerance class 2
6.3 Radial tapered roller bearings
6.3.1 Tolerance class Normal
6.3.2 Tolerance class 6X
6.3.3 Tolerance class 5
6.3.4 Tolerance class 4
6.3.5 Tolerance class 2
6.4 Radial bearings, outer ring flanges
6.5 Basically tapered bores, tapers 1:12 and 1:30
Annex A (informative) Background information on tVDsp and tVdsp for radial tapered roller bearings
Annex B (informative) Stiffness series for radial tapered roller bearings with boundary dimensions according to ISO 355
Bibliography