GB/T 24607-2023 Rolling bearings - Test and assessment for life and reliability
1 Scope
This document describes the routine test and assessment for life and reliability for general-purpose rolling bearings with an inner diameter (d) of 5 mm to 180 mm conducted on test equipment.
This document is applicable to the quality acceptance, comparative analysis and evaluation of product quality for users who have requirements for the life and reliability of rolling bearings. It is also applicable to the verification tests of the bearing industry and third-party certification agencies, project acceptance, assessment and evaluation, and internal test within the manufacturer.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 275-2015 Rolling bearings - Fits
GB/T 6391-2010 Rolling bearings - Dynamic load ratings and rating life
GB/T 6930 Rolling bearings - Vocabulary
GB 1118.1-2011 Hydraulic fluids of L-HL, L- HM, L-HV, LHS and LHG type
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 6391-2010 and GB/T 6930 and the following apply.
3.1
test for life
test conducted to estimate or verify the life of product
3.2
test for reliability
test conducted to measure, evaluate, analyze, and improve the reliability level of product
3.3
failures of rolling bearing
rolling bearings cannot meet the predetermined design performance requirements due to defects or damage
3.4
figure estimation
method for parameter estimation using Weibull probability paper
3.5
best liner invariant estimation
numerical method for estimating parameters using the best linear invariant estimation table
3.6
sequential method
method for analyzing and judging test data step by step based on sequential test
3.7
confidence interval
estimated interval of population parameters constructed from sample statistics, which is numerically equal to the difference between the upper and lower confidence limits of parameter estimation
3.8
conformity assessment
confirmation that the specified requirements related to products, processes, systems, personnel or institutions have been met
[Source: GB/T 27000-2023, 3.1, modified]
4 Symbols
For the purposes of this document, the following symbols apply.
b: Shape parameter, slope parameter of Weibull distribution, characterizing the degree of discreteness of bearing life or the stability of bearing life quality
C: Basic dynamic load rating, N
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Principle of test for life and reliability
6 Test classification
7 Test equipment
8 Samples
9 Test conditions
10 Test procedures
11 Test data analysis and assessment
12 Test report
Annex A (Informative) Examples of data processing by figure estimation
Annex B (Informative) Examples of data processing by best liner invariant estimation
Annex C (Informative) Examples of data processing by sequential method
Bibliography
