Original
By certification 
Following listed are the hot items in the main market:
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Bearing assembly rules:
Bearing during assembly should be assembled in accordance with the requirements below'll tell you about what bearing assembly principle:
(1) the assembly process, to make the center line of the shaft and the bearing hole coincide. Should the tilt, installation difficulties, but will also cause indentation, journal bending, or even cause the bearing inner ring fracture.
(2) does not allow hand hammer directly beat the bearing outer ring, the inner ring.
(3) heating the assembly of a large amount of interference and medium-sized bearing should avoid bearing direct bearing contact with the oil temperature is much higher than the bottom, in order to avoid local overheating leaving the rolling element and the inner and outer ring raceways annealing lose their hardness .
