What should we do when there is a problem with tapered roller bearings?

Since the rollers of the tapered roller bearing are designed in line contact, it can provide high rigidity and load capacity for the main shaft; in addition, the tapered roller bearing is a pure rolling bearing design, which can reduce the bearing operation well. Torque and heat, thus ensuring the speed and accuracy of the spindle.

• What could be the reason for the separation of the inner ring of the tapered roller bearings?

• What are the characteristics of large taper angle tapered roller bearings?

• Why do we need to check carefully when using tapered roller bearings?

What could be the reason for the separation of the inner ring of the tapered roller bearings?

After analysis, it is known that the failure performance of the bearing is the point contact between the roller and the inner ring on one side, resulting in stress concentration and fatigue spalling of the inner ring.

By analyzing the heat treatment condition and material of the failed bearing, no abnormality was found in the quality of the bearing itself, such as material and heat treatment. In order to find out the cause of the bearing failure, the fracture and stress conditions of the bearing were checked again. By analyzing the fracture of the damaged inner ring of the bearing, it was found that the spalling expanded from the small end of the inner ring to the large end face, that is, the small end face of the inner ring was affected. larger load. By re-inspecting the cage pockets, only one pocket was severely worn, while the other pockets were intact. The damaged roller was observed again and compared with the normal roller, and it was found that the severely worn part of the damaged roller was at the large end face.

From this, it can be concluded that the direct cause of bearing failure is that one of the rollers is reversely loaded into the inner ring on the A side of the bearing. Due to the large size of the bearing (inner diameter of 355.6mm) and the small taper of the roller, when a roller is reversely loaded into the inner ring of the bearing, it is difficult to find the influence of the roller on the entire inner ring. After the inner ring is installed into the bearing, due to the restraint of the cage and the existing clearance, such anomalies will not be found without careful inspection before the overall installation of the bearing.

What are the characteristics of large taper angle tapered roller bearings?

The inclination angle of the outer ring raceway generatrix of this kind of bearing to the axis line is between 25° and 29°, so it is called a large taper angle tapered roller bearing. The bearing capacity of bearing axial load is higher than that of ordinary tapered roller bearings, and it is mainly used to bear combined radial and axial loads mainly in one direction, but it is not easy to bear pure meridional load.

Why do we need to check carefully when using tapered roller bearings?

Most bearing manufacturers test the positive and negative rolling elements of tapered roller bearings mainly by artificial eyes, which is easy to cause visual fatigue and missed detection. This situation is extremely easy to occur in small taper tapered roller bearings. Therefore, during the bearing assembly process, the size and end face of the rollers should be carefully identified, the finished bearing should be subjected to vibration detection, and the bearing should be carefully checked for abnormality or abnormal noise after being loaded into the equipment.

SHANDONG CHIK BEARING CO., LTD has focused on the production and development of tapered roller bearings for several years, and they have always put the needs of customers as their top priority. Here, you can choose the tapered roller bearing that suits your need.