Bearing its parts can detach, divided into:

A separable bearing ---- with separable parts bearing;
2, can not be separated in the final package Bearing manufacturer ---- bearings after ferrule freedom can not be separated any bearing.
Bearing its structural shape (if no filling slot, with or without inner and outer rings and rings shape wall structure, even without the cage, etc.) can also be divided into a variety of structural types.
Second, by bearing size classification
Bearing according to diameter size
1, miniature bearings ---- nominal diameter size range of 26mm below the bearings.
2, small bearings ---- nominal diameter size range of 28-55mm bearings.
3, small bearings ---- nominal diameter size range of 60-115mm bearings.
4, the large bearing ---- nominal diameter size range of 120-190mm bearings.
5, large bearing ---- nominal diameter size range of 200-430mm bearings.
6, large bearings ---- nominal diameter size range of 440mm or more bearings
Rolling - Features
Advantage
One, friction is small, small power consumption, high mechanical efficiency, easy to start.
2, size standardization, interchangeability, easy installation and removal, easy maintenance.
3, compact structure, light weight, more narrow axial dimension.
4, high precision, high speed, abrasion, long service life.
5, part of the bearing with auto-new performance.
6, suitable for mass production, stable and reliable quality, high production efficiency.
Shortcoming
1, noise.
2, the bearing structure is more complicated.
3, the cost is higher.