Magnetic rolling bearing in gear pump and its life calculation method

摘要

Problem to be solved: to reduce the unbalanced force in the radial direction of the bearing rolling portion to a certain extent to reduce the wear due to friction of the bearing rolling portion, thereby prolonging the service life thereof.Solution: the magnetic rolling bearing reduces the balance force in the radial direction of the gear pump including the magnetized inner race 1, the rolling portion 3, the holder and the magnetized outer ring member 2.The inner circleMagnetization is treated so as to have different magnetic poles at two inner and outer ring surfaces in a magnetization inner ring.Magnetization outer ring memberMagnetic ring outer ring surfaceMagnetized outer ring memberAndIt consists of four members of the left and right members.Among othersTwo parts of the left and right sidesIt is not magnetized, andIt is connected by a concave part andBolt fixed andFour parts are alternately connected;A perfect ring is formed.When mounted, a portion different from the magnetic pole of the inner ring outer ring surface in the outer ring is placed in the high pressure working oil, and the portion where the magnetic poles are the same is placed in the low-pressure working oil.Diagram