Effect of fillers on contact force and lubrication performance of slotting bearing

The effect of bearing raceway lubrication status and contact force on the service life of bearing is significant. In order to improve the service life of cylindrical roller bearing, one method of slotting bearing outer and filling it with elastomer is proposed was. The effects of different pore size and four fillering materials of nitrile rubber, nylon-1010, hard aluminum alloys and red copper on the contact force between the inner ring raceway and rollers of bearing were calculated with finite element method (FEM). A mixed lubrication model was established by considering the real surface roughness of cylindrical roller bearing, and the influence of different fillering materials on lubrication performance of bearing under different rotation speeds conditions was obtained as well. The results showed that the effect of bearing outer filled with elastomer on lubrication performance and contact force is significant. The contact force of the maximum force roller and inner ring raceway decreases with the decrease of the elastic modulus of filler materials. And it was found that nitrile rubber and nylon-1010 can obviously increase the contacts number and effectively reduce the contact force. The increase in speed increases film thickness but reduces the coefficient of friction, contact load ratio, contact area ratio and max. von mises stress. The lubrication performance of nitrile rubber fillering materials bearing is best.