When the bearing is installed with an inner diameter of more than 70mm, or when the interference is large, the heating method is generally used to expand the bearing hole, so that the installation saves time and labor, and avoids excessive force. And the damage caused by the bearing.
At this time, it is necessary to control the heating temperature. Generally, the bearing is heated to 80 ° C, and the highest is 100 ° C. Exceeding 120 °C may cause tempering of the bearing, which will reduce the hardness and accuracy of the ferrule.
First, the common methods of bearing heating are:
1, bearing heating - electric heating plate heating method:
As long as the bearing is placed on a hot plate with a temperature of 100 ° C for a few minutes, this method is the most simple and convenient. If it is turned over several times, the bearing can be heated evenly and the efficiency is high. This method can be used regardless of the size of the bearing. heating.
2, bearing heating - electric furnace heating method:
The bearing is placed in a closed automatic temperature-controlled electric furnace for heating. This method is uniform in heating, accurate in temperature control, and fast in heating, and is suitable for a batch of bearings that heat a lot of bearings.
3, bearing heating - induction heating method:
This method utilizes an induction heater to quickly, reliably and cleanly heat the bearing to the desired temperature. This method is particularly suitable for applications where the inner ring is tightly fitted and because the inner ring is heated and the outer ring is heated. Very small, so that it can be easily mounted on the shaft and easily inserted into the seat hole.
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