Hot rolled rod line with double row angular contact ball bearing cage guide

Hot rolled rod line with double row angular contact ball bearing cage guide 2020 - 01 - Line 15 author: Dong Weiliang hot-rolled rods with double row angular contact ball bearing cage guide to roughly the following several kinds: 1, the bearing outer ring. 2, bearing inner ring. 3, ball guide. 4, ball, and the bearing inner ring and outer ring joint lead, this design does not see more in the practical application. Double row angular contact ball bearings gives the structure of this type of bearings to withstand a combination of axial and radial load, and so on other equipment used in the mill, to be able to meet its load properties. Because this kind of bearing in the line of steel rolling equipment is often used as a thrust bearing, so its qualitative change happened - load properties - - Only under the single axial load and single row bearing. Domestic most of the rolling mill bearing manufacturer in producing double row angular contact bearings, use entities in frame structure, more pocket with axial, radial drilling drilling hole form two forms; Cage guide surface design with inner ring guard guide or outer guard guidance, this design is in conformity with the specification. Practical application we often found that double row angular contact bearings in normal operation, there are out of the cage material powder phenomenon, serious accident happens online. Often find dismantling logoff bearing, the guide surface of cage has weight different wear phenomena occur. From the above phenomenon analysis: 1, the bearings in the manufacturing process tend to ignore the guide surface roughness on inner and outer control, cage guide surfaces and the guide surface is difficult to establish an effective oil film between mutual friction foam, on the other hand is bad guide gap control. 2, due to the double row angular contact ball bearing on rolling mill bearing, single row bearing in operation, and the other column ball theory is not force, so the column cage running posture, often can cause the bearing cage guide surface wear than force row wear is more serious. To change the above defects, according to the rod rolling mill line speed conditions, the class can be bearing cage guide form designed simple ball guide, in order to meet the actual use. This design at present in a steel plant are used, the effect is good. （ Source: DMD_bearing)