| Compared with plain bearings, deep groove ball bearings of the excellent | Compared with plain bearings, deep groove ball bearings of the inferior |
| 1, the general conditions, the efficiency and fluid dynamic bearing lubrication bearing considerable, but higher than the number of hybrid bearings; | 1, less able to withstand impact loading; |
| 2, radial clearance is small, angular contact bearings can be used to preload cardiac preload can be used to eliminate clearance, operation and high precision; | 2, high-speed heavy load bearing lower life; |
| 3, for the same size shaft, ball bearing sliding bearing smaller than the width, the axial machine can compact; | 3, vibration and noise is relatively large; |
| 4, most of the rolling bearing can also be radial and axial load bearing structure so simple; | 4, the radial dimension than the sliding bearing large; |
| 5, less lubricant consumption, easy to seal, easy to maintain; | |
| 6, no useful in non-ferrous metals; | |
| 7, high standardization, mass production, low cost; | |