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ASTM D3337

ASTM D3337 – Standard Test Method for Determining Life and Torque of Lubricating Greases in Small Ball Bearings (Withdrawn 2009)

Description:

Significance and Use

This test method is a screening test to differentiate among the expected life of greases in ball bearings running at high temperatures. If torque is a factor in selection of a grease, the test method provides for measurements at both low (1 r/min) and high (12 000 r/min) speeds.

Scope

1.1 This test method describes a procedure for the determination of grease life and torque in small bearings. Although this test method is not the equivalent of a long-time field-service test, it is intended to predict the relative grease life at high temperature in a reasonable period of testing time. In addition, this test method measures the running torque at both low (1 r/min) and high (12 000 r/min) speeds.

1.2 Except for torque, which is measured in gcm, the values stated in inch-pound units are to be regarded as the standard in this test method. The SI values given in parenthesis are for information only.

Related Test Methods

ASTM D4950

ASTM D495

ASTM D4951

ASTM D4950

ASTM D495

ASTM D4948

ASTM D4946

ASTM D4943

ASTM D4940

ASTM D4935

ASTM D4929

ASTM D4928

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