ISO 21250-1:2020

Rolling bearings — Noise testing of rolling bearing greases — Part 1: Basic principles, testing assembly and test machine

Publication date: 13 korr 2020

General information

Current stage: 90.20 Effective date: 15 korr 2025

Originator: ISO

Owner: ISO/TC 4/SC 13

Type: International Standard

ICS: 21.100.20

Gjuha: anglisht

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Statusi: Publikuar

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Scope

This document specifies:
— basic principles, testing assembly and the test machine for noise testing of rolling bearing greases;
— symbols used in the test methods BQ+, MQ and NQ.
This document is applicable for testing rolling bearing greases, especially of unused grease.
NOTE Suitable greases are greases of NLGI classes 1 to 3 according to DIN 51818[6]. Suitable greases for lubrication of rolling bearings are especially greases according to ISO 12924. The test method according to this document delivers meaningful results for rolling bearings; however, it can also be applied for greases in similar applications[12][13].

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PUBLISHED
ISO 21250-1:2020
90.20 Standard under periodical review
15 korr 2025

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