Greases

In general the, most common thickeners in lubricating greases are soaps of alkaline earth metals such as calcium, sodium, lithium etc. However, there are some non soap thickeners used for making greases. The most common amongst them are organophilic clays, polyurea, silica, graphite etc. Clay base greases have very high drop point and are used for high temperature applications in various industries such as steel plants, cement plants etc. Polyurea greases are popular for high temperature applications and long life.

In general the, most common thickeners in lubricating greases are soaps of alkaline earth metals such as calcium, sodium, lithium etc. However, there are some non soap thickeners used for making greases. The most common amongst them are organophilic clays, polyurea, silica, graphite etc. Clay base greases have very high drop point and are used for high temperature applications in various industries such as steel plants, cement plants etc. Polyurea greases are popular for high temperature applications and long life.

Food Grade Greases are acceptable for lubrication of equipments in the plants which process eatables such as meat, poultry, beverages, sauces etc.These lubricants must perform the same technical functions as any other lubricant such as : provide protection against wear, friction, corrosion and oxidation, dissipate heat and transfer power, be compatible with rubber and other sealing materials, as well as provide a sealing effect in some cases.

It is a mixture of oil and a soap. The soaps are dispersed into and viscosify oils to form stable gels. Lithium grease adheres well to metal, is non-corrosive, may be used under heavy loads, and exhibits good temperature tolerance. It has a drip temperature of 190° to 220°C (350° to 400°F) and it resists moisture, so it is commonly used as lubricant in household products, such as electric garage doors.

Calcium base greases are the oldest greases normally used for general purpose applications. These greases have good water resistance properties but low drop point. These are used for general purpose application at the maximum operating temperature of 600C.