88% TO 94% BETTER RESISTANCE TO LEAKAGE AT HIGH TEMPERATURES

WHEEL BEARING LEAKAGE TEST (ASTM D-1264)

 

Used to measure a grease’s high temperature capabilities by evaluating the grease’s ability to resist leakage from a bearing housing and not form varnish like deposits, when exposed to high temperatures.

The test method utilizes a modified automobile front wheel hub assembly operated at an equivalent speed of 60 mph.

The hub is packed with 90 grams of grease using 2 grams for the small bearing and 3 grams for the larger bearing and operated for 6 hours at a test temperature of 235F.

At the end of 6 hours the apparatus is dismantled while hot, and the hub cap and leakage collector are weighed separately to the nearest 0.1 gram to determine the amount of leakage that occurred. Also at the end of the test the bearings are washed and examined for any varnish, gum and lacquer-like deposits.

At the end of the test Schaeffer Mfg’s various greases showed no signs of any varnish or lacquer deposits.

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