Posted by : sanjay swain Wednesday, August 7, 2013

GREASE IS A SEMI- SOLID LUBRICANT CONSISTING OF A HIGH VISCOSITY MINERAL OIL AND METALLIC SOAP WITH A FILLER.
SOAPS ARE COMPOUNDS OF A METAL BASE--CALCIUM, SODIUM, ALUMINIUM--WITH FATTY ACIDS OBTAINED FROM ANIMAL OR VEGETABLE

FILLERS ARE LEAD, ZINC, GRAPHITE, MOLYBDENUM DISULPHIDE. FILLERS ENABLE GREASE TO WITHSTAND SHOCK AND HEAVY LOADS.

FUNCTION OF GREASE:
(1) WILL STAY PUT
(2) WILL LUBRICATE
(3) WILL ACT AS A SEAL
(4) USEFUL FOR INACCESSIBLE PARTS.

APPLICATION OF GREASE:

CALCIUM SOAP GREASES ARE WATER RESISTANT AND HAVE A MELTING POINT OF ABOUT 95°C AND ARE SUITABLE FOR LOW SPEEDS. SODIUM SOAP GREASES HAVE A HIGH MELTING POINT, ABOUT 200°C ARE SUITABLE FOR HIGH SPEEDS BUT EMULSIFY IN WATER. ALUMINIUM SOAP GREASE HAS A HIGH LOAD CARRYING CAPACITY.

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