BS ISO 21250-1:2020
$102.76
Rolling bearings. Noise testing of rolling bearing greases – Basic principles, testing assembly and test machine
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 22 |
This document specifies:
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basic principles, testing assembly and the test machine for noise testing of rolling bearing greases;
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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 ].
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Symbols, abbreviated terms and subscripts |
| 11 | 5 Basics |
| 12 | 6 Grease noise evaluation method 6.1 General and overview 6.2 Calculation method for the grease damping |
| 13 | 6.3 Calculation method for peak analysis |
| 15 | 6.4 Calculation for SUN analysis 7 Noise testing of greases 7.1 General information |
| 16 | 7.2 Measuring principle 7.3 Test machine 7.4 Test setup 7.5 Test bearings and amount of grease |
| 17 | 7.6 Test load 7.7 Spindle speed 7.8 Signal recording |
| 18 | 7.9 Display 8 Calibration 8.1 General |
| 19 | 8.2 Calibration levels 8.3 Calibration means 9 Error estimation |
| 21 | Bibliography |
