Heating of rolling bearing assembly process

Through the bearing heating, make the cabinet inside diameter expansion, the big set of the axis bearing retainer, should pay attention to the specifications and brand on the outside (at the end of the The same below) In order to check. Inner ring shrink after cooling, so as to form close cooperation with shaft. Bearing heating temperature should be controlled in 80 ~ 100 ℃ heating time depends on the bearing size, has the following four kinds of commonly used heating method. 1. Cooking oil heating method bearing on a wire rack in a transformer oil, as shown in figure a. Heating transformer oil, remove to after the scheduled time, with a clean not depilate cloth towels to clean oil stains and attachments, as soon as possible to the shaft. 2. Power frequency eddy current heating method to bearing sleeve on the dynamic core of heater power frequency, after turn on the heater of the power frequency ac power. Bearing will, by electromagnetic induction, the outer ring of eddy current, Current) To generate heat expansion, as shown in figure b. 3. Oven heating method to the bearing into the oven for heating as shown in figure c. 4. Induction heating method to bearing on induction heating, this method is applicable to small bearings. Used in induction cooker have professional factory production of products, also can use common electromagnetism furnace of family cooking. Bearings shall be on a piece of iron plate, Or induction cooker pan, put the bearing directly on the induction cooker may not heating, the induction cooker screen may show that the heater) nothing 'EI' 。 Attention should be paid to control the temperature in the operation, for example, choose the lowest temperature tip Cl, as shown in figure d. After heating to the appropriate time, as soon as possible should be set to the desired location of axis bearing retainer. To wear clean gloves when operating, prevent burns or go to hit the feet, as shown in figure e.