I. Overview

Bearing durability test refers to the test method to evaluate the durability performance of bearings and life prediction through long time test. Durability test is one of the important means of bearing detection and evaluation, but also the basis of bearing design and quality control.

Classification

According to the type of test load can be bearing endurance test is divided into torsion test, radial load test and impact load test three types; according to the test conditions can be divided into the basic test, simulation test and special test three types.

Third, the method

1. Torsion test

Torsion test is through the control of the inner ring of the bearing speed, the outer ring of the load and running time, to assess the fatigue life of the bearing test method. At present, domestic and foreign common torsion test methods include ISO281:2007 standard methods, ABMA9, 11 standard methods.

2. Radial load test

Radial load test is to control the pressure and load between the inner and outer rings of the bearing, rotational speed for testing. At present, domestic and foreign common radial load test methods are ISO281: 2007 standard methods, ABMA19, 10 standard methods.

3. Impact load test

Impact load test is through the impact load applied to the bearing to simulate the actual working conditions of the test method. At present, domestic and foreign common impact load test method is ISO281:

2007 standard method, ABMA 9,

13 standard methods.

Fourth, the standard

Bearing endurance test is divided into the basic test, simulation test and special test, the corresponding domestic and international standards:

Basic test: GB/T307.1-2018, ISO281:2007, JIS B 1519-2017, DIN 3990-3/42. Simulation test: GB/T307.2-2017, ISO1132-1:2000, JISB 1538-2010, DIN 40050-93. Special test: GB/T307.3-2017, ISO1132-1:2000, JISB 1538-2010, DIN 40050-93. T307.3-2019, ISO1101:2017, JIS B 1525-1988, DIN 40050-15 V. Notes

When carrying out bearing endurance test, the following points should be noted:

1. The test equipment should be calibrated before conducting the test to ensure the accuracy of the test data;

2. need to test according to the same standard and test method, otherwise different standard test results can not be compared;

3. Record the data during the test, including the running time of the bearing, rotational speed, load, temperature, etc., in order to assess the durability performance of the bearing.

In summary, bearing durability test is an important method to measure the performance of bearings, which has an important role in bearing design and manufacturing. Correct durability test methods and standards can provide reliable data support for the development and promotion of bearings.