Causes and solutions for rolling bearing heating

The shaft parts of the machine tool, especially the main shaft, are generally assembled with rolling or plain bearings and rotate at a high speed, sometimes generating high heat. If this phenomenon is not eliminated in time, it will cause the bearing to overheat and cause the temperature of the corresponding part of the machine tool to rise and cause thermal deformation. In severe cases, the spindle and the tailstock will not be equal, which will not only affect the precision and machining accuracy of the machine itself, but also Burn the bearing. The causes of the spindle bearing heating and its troubleshooting methods are shown in Table 1.

Causes of rolling bearing heating and its elimination

(1) Reason: Low bearing accuracy Method: Select the bearing with the specified accuracy grade

(2) Reason: The spindle is bent or the hole of the box is not in the same way: repair the spindle or the box

(3) Reason: The belt is too tight: adjust the belt to make the tension appropriate

(4) Reason: Poor lubrication method: Select the lubricating material of the specified grade and clean it properly.

(5) Reason: Low assembly quality Method: Improve assembly quality

(6) Reason: The inner casing of the bearing runs the ring method: replace the bearing and related wear parts

(7) The axial force is too large. Method: cleaning and adjusting the gap of the sealing ring is required to be between 0.2 and 0.3 mm, correcting the balance hole diameter of the impeller and verifying the static balance value.

(8) Bearing damage method: replace the bearing

For more information and purchase please visit: https://www.supplyforever.com

Introduction to maintenance and monitoring of rolling mill bearings

First, the maintenance and monitoring of rolling mill bearings
Bearings should be intensified for maintenance and monitoring during use to extend their service life.

1. Keep the lubricating oil road open, select the type of lubricant according to the regulations, and fill the lubricant regularly. Ensure that the rolling surface of the roller and the sliding surface of the roller and the rib are well lubricated with oil.

2. Regularly check the sealing of the seals and replace the damaged seals in time. Ensure the sealing performance of the bearing to prevent water and iron oxide from entering the bearing and preventing leakage of the bearing lubricant.

3. In combination with the actual situation of the enterprise, actively carry out monitoring of the bearing operation status.

Noise monitoring: It should be a smooth humming sound during normal operation, and it should be regularly monitored and compared with the normal sound to find abnormal conditions in time.

Lubricant monitoring: Normal lubricants should be clear and clean. If the lubricant is dirty, there will be abrasive particles or contaminants.

Temperature monitoring: When the temperature rises, the operation will be abnormal. The company has carried out temperature monitoring work and is willing to serve customers more widely.

For more information and purchase please visit: https://www.supplyforever.com