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ISO 21250-1:2020

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

Publication date:   Jul 13, 2020

General information

60.60 Standard published   Jul 13, 2020

ISO

ISO/TC 4 Rolling bearings

International Standard

21.100.20   Rolling bearings

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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
60.60 Standard published
Jul 13, 2020