How to deal with the heating phenomenon of roller bearing in operation

What are the ways to deal with the heating phenomenon in the operation of the roller bearing? Let's learn about it together.

　　The matters needing attention in the use of bearings are as follows:

　　⑴. Keep the bearing and its surroundings clean. Even small dust invisible to the eyes will affect the roller bearing. Therefore, it is necessary to keep the surrounding area clean to prevent dust from invading the bearing.

　　⑵. Use it carefully and carefully. In use, a strong impact on the bearing will cause scars and indentations, which will be the cause of the accident. In severe cases, cracks and breaks may occur, so be careful.

　　⑶. Use appropriate operating tools. To prevent substitution with existing tools, appropriate tools must be used. Such as special sleeves, presses, etc.

　　⑷. Pay attention to the corrosion of the bearing. When handling INA bearings, sweat on your hands can become a cause of rust. Be careful to operate with clean hands and try to wear gloves.

　　⑸. Before the preparation of the device is completed, do not unpack the bearing to avoid contamination.

The life of the roller bearing is more sensitive to the load than to the speed. Therefore, for the multi-stage drive shaft, if possible, the larger deceleration should be placed in the later stage; for the main shaft bearing, if possible, the external load point of action should be properly distributed. The space between the bearing fulcrum and the bearing fulcrum is trying to reduce the load of the spindle bearing, and the load transmitted to the spindle bearing is stable, to prevent shock and vibration, which requires the shape and position of the bearing device to be accurate enough, and the bearing clearance The matching and selection are correct, and the accuracy of the bearing device is good.

　　The shaft parts of the machine tool, especially the main shaft, are usually assembled with bearings or sliding bearings and rotate at a high speed, sometimes generating high heat. If this phenomenon is not cleaned up in time, it will cause the bearing to overheat and increase the temperature of the corresponding parts of the machine tool to produce thermal deformation. In severe cases, the main shaft and the tailstock will not be equal in height. This will not only affect the accuracy and processing accuracy of the machine itself, but also Burn out the bearing. The reason for the heating of the roller bearing and its cleaning method are shown in Table 1.

The cause of bearing heating and its cleaning method

　　1. Reason: low bearing accuracy. Method: select bearings with regular accuracy grades

　　2. Reason: the spindle is bent or the box hole is not concentric. Method: repair the spindle or box

　　 3. Reason: The belt is too tight. Method: Adjust the belt to make it tight.

　　 4. Reason: poor smoothness method: select smooth materials of regular grades and clean them appropriately

　　 5. Reason: Low assembly quality Method: Improve assembly quality

　　6. Reason: Bearing inner and outer shell running circle method: Changing the bearing and related wear parts

　　7. Too much axial force: cleaning and adjusting the gap between the seal ring and the gap between 0.2～0.3mm, correcting the diameter of the impeller equalization hole and verifying the static equilibrium value

　　 8. Bearing damage method: change the roller bearing

　　 The above is an introduction to the treatment method of heat generation in the operation of the roller bearing. I hope it will be helpful to everyone.