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ASTM D4693 for low-temperature torque of grease-lubricated wheel bearings
ASTM D4693 for low-temperature torque of grease-lubricated wheel bearingsASTM D4693 standard test method for low-temperature torque of grease-lubricated wheel bearings9. Bearing Preparation9.1 New bearings must be conditioned prior to first use in this method. Install any wheel bearing grease in the ...
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ASTM D4693 for low-temperature torque of grease-lubricated wheel bearings
ASTM D4693 for low-temperature torque of grease-lubricated wheel bearingsASTM D4693 standard test method for low-temperature torque of grease-lubricated wheel bearings8. Calibration8.1 Torque Calibration:8.1.1 Place the load cell in the cold chamber at -40°C and allow it to come to temperature equilibrium. ...
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ASTM D4693 for low-temperature torque of grease-lubricated wheel bearings
ASTM D4693 for low-temperature torque of grease-lubricated wheel bearingsASTM D4693 standard test method for low-temperature torque of grease-lubricated wheel bearings6. Apparatus6.1 Low-Temperature Wheel Bearing Torque Apparatus, illustrated in Fig. 1.NOTE 1 - Several apparatus configurations are available, ...
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ASTM D4693 for low-temperature torque of grease-lubricated wheel bearings
ASTM D4693 for low-temperature torque of grease-lubricated wheel bearingsASTM D4693 standard test method for low-temperature torque of grease-lubricated wheel bearings4. Summary of Test Method4.1 A freshly stirred and worked sample of test grease is packed into the bearings of a specially-manufactured, ...
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ASTM D4693 for low-temperature torque of grease-lubricated wheel bearings
ASTM D4693 for low-temperature torque of grease-lubricated wheel bearingsASTM D4693 standard test method for low-temperature torque of grease-lubricated wheel bearings1. Scope1.1 This test method determines the extent to which a test grease retards the rotation of a specially-manufactured, spring-loaded, ...
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ASTM D1478 test method for low-temperature torque of ball bearing grease
ASTM D1478 test method for low-temperature torque of ball bearing grease9. Calculation and Report9.1 Depending on the dynamometer scale calibration, calculate and report starting and running torques in g•cm to three significant figures using the appropriate equation, as follows:9.1.1 For a scale calibrated ...
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ASTM D1478 test method for low-temperature torque of ball bearing grease
ASTM D1478 test method for low-temperature torque of ball bearing grease8. Procedure8.1 Wash the selected test bearing thoroughly in Stoddard solvent and rinse it in a beaker of n-heptane. Dry the bearing for approximately 20 min in a warm oven (not over 100°C (212°F)). Permit the bearing to cool to ...
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ASTM D1478 test method for low-temperature torque of ball bearing grease
ASTM D1478 test method for low-temperature torque of ball bearing grease6. Apparatus6.1 Fig. 1 shows a suitable torque test apparatus assembly. It consists of the components described in 6.1.1-6.1.5.6.1.1 Low-Temperature Box - Any well-insulated box of at least 0.03 m3 (1 ft3) interior volume, in which ...
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ASTM D1478 test method for low-temperature torque of ball bearing grease
ASTM D1478 test method for low-temperature torque of ball bearing grease4. Summary of Test Method4.1 A No. 6204 open ball bearing is packed completely full of the test grease and cleaned off flush with the sides. The bearing remains stationary while ambient temperature is lowered to the test temperature ...
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ASTM D1478 test method for low-temperature torque of ball bearing grease
ASTM D1478 test method for low-temperature torque of ball bearing grease1. Scope1.1 This test method covers the determination of the extent to which a grease retards the rotation of a slow-speed ball bearing by measuring starting and running torques at low temperatures (below -20°C (0°F)).1.1.1 Torque ...
