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National standards and national normative documents

Publication date

September 2014

Number of pages

72 p.

Reference

NF ISO 492

ICS Codes

17.040.40 Geometrical Product Specification (GPS)

21.100.20 Rolling bearings

Classification index

E22-335

Print number

1

International kinship

ISO 492:2014

Sumary

Rolling bearings - Radial bearings - Geometrical product specifications (GPS) and tolerance values

ISO 492:2014 specifies dimensional and geometrical characteristics, limit deviations from nominal values, and tolerance values to define the interface (except chamfers) of radial rolling bearings. The nominal boundary dimensions are defined in ISO 15, ISO 355 and ISO 8443.

Replaced standards (1)

NF ISO 492

July 2002

Standard Cancelled

Rolling bearings - Radial bearings - Tolerances

ISO 492 specifies tolerances for boundary dimensions (except chamfer dimensions) and the running accuracy of radial rolling bearings specified in ISO 15, ISO 355 and ISO 8443. This International Standard does not apply to certain radial bearings of particular types (e.g., drawn cup needle roller bearings) or for particular fields of application (e.g., airframe bearings and instrument precision bearings).

Standard replaced by (1)

NF ISO 492

September 2023

Standard Current

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].

Table of contents

Avant-propos
iv
Introduction
v
1 Domaine d'application
1
2 Références normatives
1
3 Termes et définitions
1
4 Symboles
1
5 Écarts limites et valeurs de tolérance
17
5.1 Généralités
17
5.2 Roulements radiaux, à l'exception des roulements à rouleaux coniques
18
5.3 Roulements radiaux à rouleaux coniques
27
5.4 Roulements radiaux, collets de bague extérieure
35
5.5 Alésages réputés coniques, cônes 1:12 et 1:30
36
Annex A (informative) Symboles et termes donnés dans l'ISO 492:2002 relatifs aux nouvelles descriptions dans le présent document
39
Annex B (informative) Exemple d'indications sur les dessins de caractéristiques avec spécification pour les roulements à rouleaux
43
Annex C (informative) Illustration des termes et définitions de l'ISO 1132-1 et de l'ISO 14405-1
45
Annex D (informative) Description des modificateurs de spécification pour les tailles linéaires avec les illustrations correspondantes
52
Bibliographie
62

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