1According to the type of rolling element bearings, divided into:
    1) The ball is rolling ball bearings 
     2) rolling roller bearings for the roller. Roller bearings by roller types, is divided into: ----cylindrical roller bearings are cylindrical roller roller bearings, cylindrical roller length and diameter ratio less than or equal to 3; Needle Roller Bearings --- - is a needle roller bearings, needle length and diameter greater than 3, but the diameter is less than or equal to 5mm; tapered roller bearings ---- rolling body is tapered roller bearings; self-aligning roller rolling bearing eleven are spherical roller bearings.
     2 Bearing aligning their work can be divided into:
     1) Spherical roller bearings ---- is spherical, and can adapt to the two roller angular deviation between the axis line and the angular motion of the bearing;
     2) non-self-aligning bearing (rigid roller bearing) ---- can impedance offset angle between the axis of the bearing.
     3 The rolling bearing according to the number of columns, divided into:
     1) with a single row bearings ---- roller bearings;
     2) Double row bearings ---- with two roller bearings;
     3) multi-row bearings ---- with more than two roller bearings, such as three, four bearings.
    4 Bearing its separate parts can be divided into:
     1) separable bearings ---- with detachable parts of bearings;
     2) can not be separated in the final package bearing ---- bearings, the ring can not be separated from any free bearings.
     5 Bearing structure according to their shape (if no slot loading, with or without inner and outer rings and the ring shape, wall structure, even without the cage, etc.) can also be divided into a variety of structural types.
    6 Classification by rolling bearing according to their size size diameter, divided into:
     (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 and medium size bearings ---- nominal diameter range of 60-115mm bearings;
     (4) large bearings ---- nominal diameter size range of 120-190mm bearing
     (5) large bearings ---- nominal diameter size range of 200-430mm bearings;
     (6) large bearings ---- nominal diameter size range of 440mm above the bearing.



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