Full Description

1.1This test method covers a procedure for determining a lubricating grease's coefficient of friction and its ability to protect against wear when subjected to high-frequency, linear-oscillation motion using an SRV test machine at a test load of 200N, frequency of 50Hz, stroke amplitude of 1.00mm, duration of 2h, and temperature within the range of the test machine, specifically, ambient to 280C. Other test loads (10N to 1200N for SRVI-model, 10N to 1400N for SRVII-model, and 10N to 2000N for SRVIII-model), frequencies (5Hz to 500Hz) and stroke amplitudes (0.1mm up to 4.0mm) can be used, if specified. The precision of this test method is based on the stated parameters and test temperatures of 50C and 80C. Average wear scar dimensions on ball and coefficient of friction are determined and reported.

Note 1:Optimol Instruments supplies an upgrade kit to allow SRVI/II-machines to operate with 1600N, if needed.

1.2This test method can also be used for determining a fluid lubricant's ability to protect against wear and its coefficient of friction under similar test conditions.

1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.