When the temperature of the paired angular contact bearing has not been normalized and steadily increased, the following reasons can be summarized: 1. Too much or too little grease; 2. The assembly of the bearing is not good; 3. The internal structure of the paired angular contact bearing is too small. , or the load is too large; 4. The friction of the sealing equipment is too large; 5. The lubricating fluid does not meet the requirements; Temperature is particularly important to maintain a moderate service life of bearings and avoid deterioration of grease! Suggestion: It is more ideal to control the application in non-continuous high temperature conditions (usually below 100 degrees). Then check the guide rail surface of the bearing, the condition of the turning surface and the damage of the cage, etc., whether there is any damage or abnormal condition. The torque is accurate, in order to turn stable!