ASTM-IV Wheel Bearing Greases

[MolaKule]

There is a standard test method for life performance of automotive wheel bearing grease.

What ASTM test is used to determine the Life of wheel Bearing Grease and how is the test performed?

 

[drive it forever]

25lbs thrust load at 1000 rpm's, at a spindle temp of 320 degrees fahranheit (160c), 20 hours on, 4 hours off, on/off cycle. The test goes on until the grease breaksdown to an established end point, measured from the motor drive torque.

 

[drive it forever]

ASTM d3336

 

[MolaKule]

Excellent, now which ASTM test its it?