When the inner diameter of the bearing is larger than 70m, or the fit interference is larger, the heating method is used to make the bearing hole expand, to avoid the damage caused by excessive application of force. At the same time, the heating temperature should be controlled, and Tapered Roller Bearings are generally heated to 80C to 100C. More than 120C will occur a tempering phenomenon, resulting in a reduction in the hardness of the ring and reduced accuracy.

The common heating methods for Tapered Roller Bearings are as follows:

1. Electric heating plate method: the bearing can be placed at the temperature of 100 ℃ for several minutes on the electric heating plate, turn it over several times to make the bearing heat evenly, but also high efficiency, bearing size can use this method.

2. Electric furnace heating method: put the bearings into closed automatic temperature control electric furnace heating, heating is accurate temperature control, heating fast, suitable for one-time heating a lot of bearings occasion.

3. Induction heating: Tapered Roller Bearings can be quickly, reliably, and cleanly heated to the desired temperature using an induction heater. This is especially suitable for situations where the inner rings fit together since only the inner rings are heated, and the outer ring receives little heat, so it is easily mounted on the shaft.

4. Bulb heating: Tapered Roller Bearings are heated with 50W bulbs to keep the heating temperature at about 100℃. smaller Bearings can be placed directly on the bulb and larger ones can be placed in the cone of the bulb, the cone cover can prevent the bulb heat loss, heating evenly. A certain range can be adapted to heating different size bearings. If far infrared light bulbs note that the direction of the bulb should be downward, so as not to infrared rays unfavorable to the human eye. The bulb heating method is suitable for small quantities that are not often needed; bearings are to be heated.

5. Tank heating: this is a traditional heating method, 50 ~ 70 mm from the bottom of the tank at the metal mesh, Tapered Roller Bearings placed on the network, and large Bearings to hook up. The bearing should not be placed directly at the bottom of the groove, to prevent contact with the bottom of the bearing part of local heating too high, or the bottom of the dirt into the bearing precipitation. Use non-corrosive thermal stable mineral oil, transformer oil, oil, and containers to keep clean. The capacity of the oil tank should be based on the size of the bearing being heated and the amount of oil.

JRZC BEARING is a professional BEARING manufacturer, with more than 20 years of manufacturing experience, the main products are Tapered Roller Bearings, and cylindrical Roller Bearings, if you need them, please feel free to contact us.