ISO 76-1978 rus PDF

Full title and description

Ст ISO 76-1978 rus — Rolling bearings — Static load ratings (Russian-language reproduction/translation of International Standard ISO 76:1978). This document defines the method for determining basic static load ratings and static equivalent loads for rolling bearings of conventional design.

Abstract

ISO 76:1978 specifies procedures and formulae to calculate the basic static load rating (C0) and the static equivalent load for rolling bearings manufactured from common hardened bearing steels and of conventional geometry. It excludes designs where rolling elements bear directly on shaft or housing surfaces. The 1978 edition has since been revised and withdrawn in favour of later editions.

General information

• Status: Withdrawn (original ISO 76:1978 edition withdrawn; later revisions published).
• Publication date: June 1978 (first edition — published 15 June 1978).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 21.100.20 — Rolling bearings.
• Edition / version: Edition 1 (1978).
• Number of pages: 4 pages (original publication).

Scope

The standard provides calculation methods for the basic static load rating and static equivalent loads for radial and axial rolling bearings within the size ranges covered by the applicable ISO bearing standards, for bearings manufactured from commonly used hardened bearing steel and having conventional rolling contact geometry. It does not apply to non‑conventional designs or bearings where the rolling elements operate directly on shaft or housing surfaces. Note that the 1978 edition was a technical revision of earlier recommendations and was later itself revised.

Key topics and requirements

• Definition of basic static load rating (C0) and static equivalent load concepts.
• Formulae and calculation procedures for static load ratings for radial and axial bearings.
• Assumptions about bearing materials (hardened bearing steel) and conventional contact geometry.
• Limitations and applicability — exclusion of heavily truncated contact geometries and bearings with direct element-to-shaft/housing contact.
• Reference to later revisions and explanatory technical reports for additional notes and discontinuities in calculations.

Typical use and users

Mechanical design engineers, bearing manufacturers and suppliers, tribology researchers, maintenance engineers and standards librarians use this standard as a basis for determining allowable static loads during design, selection, testing and failure analysis of rolling bearings. Because the 1978 edition is withdrawn, users typically consult the later ISO 76 revisions or national/adopted translations for current application.

Related standards

Related and successor documents include ISO 76:1987 (revision) and the currently maintained ISO 76:2006 (with amendment) as the modern reference for static load ratings. Other related bearing standards include ISO 281 (dynamic load ratings and life) and explanatory technical reports such as ISO/TR 10657 (explanatory notes to ISO 76).

Keywords

Rolling bearings; Static load rating; Basic static load rating; Static equivalent load; подшипники качения; статическая грузоподъёмность; ISO 76; C0.

FAQ

Q: What is this standard?

A: ISO 76:1978 (presented here as Ст ISO 76-1978 rus when reproduced in Russian) is an International Standard that originally defined methods to calculate the basic static load rating and static equivalent load for rolling bearings.

Q: What does it cover?

A: It covers definitions, assumptions, and calculation procedures for static load ratings of conventional rolling bearings made from hardened bearing steel; it excludes bearings with rolling elements operating directly on a shaft or housing and certain truncated-contact designs.

Q: Who typically uses it?

A: Bearing designers and manufacturers, mechanical and maintenance engineers, and technical standards users who need to determine allowable static loads for bearing selection, qualification and failure analysis. When precision or current practice is required, users should refer to the later ISO 76 revisions.

Q: Is it current or superseded?

A: The 1978 edition has been withdrawn and was revised by ISO 76:1987; the modern reference is ISO 76:2006 (and subsequent amendments), which should be used for current, confirmed practice. The 1978 text remains of historical and archival interest and Russian-language reproductions/translations are available from specialist standards resellers.

Q: Is it part of a series?

A: Yes — ISO 76 is part of ISO's set of standards on rolling bearings and load ratings; it is closely related to standards on dynamic load ratings (for example ISO 281) and to technical reports and national/adopted variants that provide explanatory notes and editorial updates.

Q: What are the key keywords?

A: Basic static load rating, static equivalent load, rolling bearings, C0, статическая нагрузка, подшипник, ISO 76.