Lubricating Greases_1
Grease is a semi-solid lubricant consisting of a base oil and a thickener . The main types and general properties of grease are shown in the table. In general, different brands of grease must not be mixed. Mixing grease with different types of thickeners may destroy its composition and physical properties. Even if the thickeners are of the same type, possible differences in the additives may cause detrimental effects.
Part 1 | Part 2 | Part 3
| Name (Popular name) |
Lithium grease |
| Thickener |
Li soap |
| Base oil |
Mineral oil |
Diester oil, Polyatomic ester oil |
Silicone oil |
| Dropping point, °C |
170~195 |
170~195 |
200~210 |
| Working temperatures,°C |
-20~+110 |
-50~+130 |
-50~+160 |
| Working speed, %( 1 ) |
70 |
100 |
60 |
| Mechanical stability |
Good |
Good |
Good |
| Pressure resistance |
Fair |
Fair |
Poor |
| Water resistance |
Good |
Good |
Good |
| Rust prevention |
Good |
Good |
Poor |
| Remarks |
General-purpose grease used for numerous applications |
Good low temperature and torque characteristics. Often used for small motors and instrument bearings. Attention should bi paid to rust caused by insulation varnish. |
Mainly for high-temperature applications. Unsuitable for bearings for high and low speeds or heavy loads or those having numerous sliding-contact areas (roller bearings, etc.) |
Note
1. The values listed are percentages of the limiting speeds given in the bearing tables.
Remarks: The grease properties shown here can vary between brands.
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