In addition to marking the bearing type and product number on the bearing, the assembly sequence number and the loading area number are also indicated. The alignment mark identifies the assembly position of each component. If the assembly is correct, you can ensure that the clearance of each column is the same, and the bearing will has the best performance and highest load. If the bearing assembly sequence error, wwill lead to each column gap is not uniform, partial load or cause local clearance is too small and lead to bearing burning when working, if the clearance is too large, making the raceway force range reduced Bearing life is reduced, prone to fatigue peeling.

The load area number is marked on the quarter position of the outer ring (in the case of the outer ring rotation, the load area is marked on the inner ring). To extend the bearing life, when the bearing is used for three to five months, the outer ring need to replace 180 ° to change the load area position, and then continue to use. Next, replace the load area every three to five months, turn the outer ring 90 degrees for the second time, and 180 degrees for the third time. Followed by a conversion of 270 degrees each time.