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API SPEC 14L: Lock Mandrels and Landing Nipples : Reaffirmed

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ISO 21250:2020

ISO 21250:2020 Rolling bearings – Noise testing of rolling bearing greases – Part 1: Basic principles, testing assembly and test machine

CDN $173.00

SKU: 700fc8b791a3 Categories: ,

Description

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].

Edition

1

Published Date

2020-07-13

Status

PUBLISHED

Pages

13

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

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].

Previous Editions

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