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The point of heating installation of bearing
by：Waxing
2020-11-13
2019 - the main points of the heating installation of bearing
11 -
24 1, the appropriate heating temperature to control, high temperature bearing damage, temperature is low enough ring expansion, the effect is not significant.
General control in 80 ~ 100 ℃, if the heating of more than 120 ℃, can lead to the phenomenon of tempering of the bearings, may also cause ring lower hardness and lower precision.
After reaching the required temperature, install the action quickly, prevent cooling installation difficulties occur thereby.
2, to a certain pressure when installation inner ring to the shoulder pressure, and with a very thin after cooling feeler clearance between the inner ring end face and shoulder.
Three methods can use oven thermostat, heating, can also use electricity heating bulb.
Using 50 w bulb heating bearings, can ensure that the heating temperature about 100 ℃, the smaller the bearing can be directly on the bulb, larger bearings taper enclosure may be placed on a light bulb, conical cover device can be adjusted, in a certain heating range that can adapt to different size of bearing.
Conical cover can prevent heat losses, light bulbs and heated evenly.
4, for larger bearings, in order to guarantee the uniformity of heating, can also use hot oil heating method.
In oil bath pot add right amount of transformer oil, the oil heating to 80 ~ 100 ℃, put bearing hanging hooks in the oil, to ensure that the entire bearing all bathed in hot oil, keep constant temperature for 5 ~ 10 minutes, the whole bearing heating even after take out the suit on the shaft immediately.
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