Spiral oil line for four-row tapered roller bearings

In the production of rolling mill bearings, such as four-row tapered roller bearings and four-row cylindrical roller bearings, many bearings are designed with a helical oil line. This is to make it easier to maintain the lubricating oil during the customer's use. This is necessary. But sometimes we will find that some bearings have helical traces on the surface. Today we will talk about this trace.

For the production of rolling bearings, especially when grinding, if the workers do not operate properly, or the production technology is not skilled, the roll bearing surface is prone to various defects, resulting in a decline in the overall quality of the bearing. The generation of helical defects is one of them. During the grinding process of the bearing, the surface of the bearing needs to be ground by a high-speed rotating grinding wheel. If the operation is not up to standard, defects will occur. We can see that there are traces of intersecting spiral lines on the surface of the precision bearing. After analysis, we know that such traces are inseparable from the straightness of the busbar of the grinding wheel. The pitch of these spiral lines is related to the speed of the workpiece table and the speed of the workpiece. It is also related to the fact that the axis of the grinding wheel is not parallel to the guide rail of the table. Specifically, the grinding wheel is offset during grinding, but the edge of the grinding wheel is in contact with the working surface; or the grinding wheel is not well-dressed, with local protrusions, etc.; it is also possible that the rigidity of the workpiece itself is poor; this is the reason why it does not meet the requirements phenomenon occurs.

Luoyang FV Bearing is mainly engaged in the design, production and maintenance of rolling mill bearings. Including hot rolling production line, cold rolling production line and so on. If you have any needs, please contact us. We FV bearing can be your OEM supplier! We FV not only can produce standard models of bearings, but also can design and produce non-standard bearing models according to customer's requirement.