Non-Black Heavy Load Multi-Purpose Grease for Construction Machine 961106

A new non-black (colorless) heavy load grease, having superior anti-seizure property and multi-purpose performance for construction machines, has been developed. The main components of the non-black heavy load grease are apertinent viscosity base oil, lithium complex soap and a unique non-black solid lubricant (phosphate glass). The weld load of the new non-black heavy load grease is 4900 N by the four ball EP tester. This value is almost the same as that of 60% molybdenum disulfide paste. The several type grease samples, mixed with 1 % clay dust, were evaluated by the four ball EP tester. The multi-purpose EP lithium grease lost the antiwear property and the MoS2 grease maintained antiwear property. The new non-black heavy load grease shows the best antiwear property against the clay dust.
Furthermore, a number of laboratory tests have been conducted to prove the multi-purpose performance for construction machines. To confirm practical performance of the new non-black heavy load grease, we have also conducted hydraulic excavator bench test. The lubricating mechanism of the phosphate-glass is also discussed.


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