Bearing grease lubrication good? Or oil lubrication good?

The choice of lubricants and lubrication of rolling bearings is associated with the type, size, and operation condition of bearings, usually a rolling bearing with grease or oil lubrication, under the condition of special solid lubrication may be adopted. In grease lubrication and oil lubrication, grease lubrication with the most, about 80% of the rolling bearing grease is used. 1, grease lubrication characteristics - - （ 1) Advantages: A simple lubrication device. If you use a sealed bearing or not sealed bearing does not need to add fat, does not require any additional lubrication device ( Oil lubrication system needs, by contrast, oil pump, oil pipe, tank, etc. ) 。 B: not easy to leak, grease bearing seal structure is simpler, C: bearing maintenance, maintenance is convenient. D: grease sealing function, can prevent external dust, water and other impurities into the bearing. E: it's easier to improve the purity of the machinery. （ 2) Grease lubrication faults: A: large bearing friction, heat dissipation is not good, allowing the rotational speed is low. B: the grease lubricated bearing dn value generally no more than 3 x 105 mm, r/m, n. C: when temperature is very high, the base oil will accelerate the evaporation of the grease and the oxidation, the colloid structure of the grease will also accelerate change to oil. Bearing temperature rise every 10 ℃ - 15 ℃, the life of the grease reduced 1/2, in addition to the special high temperature grease, general grease cannot be used at high temperature. 2, the characteristics of the oil lubrication - - - （ 1) Advantages, suitable for high speed rotating B, good high temperature stability, is suitable for use at high temperatures. C, can take bearing the internal friction heat, good heat dissipation. When bearing high environmental temperature, lubrication cooling effect. D, easy to remove the inside of the bearing wear particles and dust. E, can be Shared with gear around the bearing parts, such as a lubricant, a common lubrication. The previous: bearing technology next FAQ manual: all kinds of bearing characteristics and USES