The purpose of lubrication:

Non-liquid friction is to reduce friction and reduce wear and increased bearing efficiency. Liquid friction, the lubricant is the working medium, since the cooling effect.

Metal bearings commonly used in lubricating oil and grease.

First, the grease

Low speed and heavy, difficult often the occasion of the oil with grease

Selection principles:

1. Unit pressure is high, the low sliding velocity the penetration of small lipid

2. The grease dropping point higher than the operating temperature about 20-30 ° C

3. Water washout or wet outside should use waterproof calcium and aluminum grease, high temperature at the application of management-based and composite calcium, sodium soap grease.

Second, lubricants

Lubricating oil is the most widely used liquid-friction bearings oil as lubricant.

Principles:

1. High speed, lower oil pressure ratio of hours to use η, and vice versa with high viscosity oil

2. High temperature conditions, higher viscosity oil of the machine in the 30th summer, winter, on the 20th oil