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ASTM D4170 - Fretting Wear Protection by Lubricating Greases

Significance and Use

5.1 This test method is used to evaluate the property of lubricating greases to protect oscillating bearings from fretting wear. This method, used for specification purposes, differentiates among greases allowing low, medium, and high amounts of fretting wear under the prescribed test conditions. The test has been used to predict the fretting performance of greases in wheel bearings of passenger cars shipped long distances.5 Test results do not necessarily correlate with results from other types of service. It is the responsibility of the user to determine whether test results correlate with other types of service.

1. Scope

1.1 This test method evaluates the fretting wear protection provided by lubricating greases.

1.2 The values stated in SI units are to be regarded as the standard.

1.2.1 Exception—Other units are provided for information only.

Extracted, with permission, from ASTM D4170-16 - Fretting Wear Protection by Lubricating Greases, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the complete standard may be purchased from ASTM International, astm.org