BS ISO 21250-1:2020

Rolling bearings. Noise testing of rolling bearing greases Basic principles, testing assembly and test machine

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Standard number:	BS ISO 21250-1:2020
Pages:	22
Released:	2020-07-16
ISBN:	978 0 580 99417 3
Status:	Standard

DESCRIPTION

BS ISO 21250-1:2020

This standard BS ISO 21250-1:2020 Rolling bearings. Noise testing of rolling bearing greases is classified in these ICS categories:

21.100.20 Rolling bearings

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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