1、 Structures and types of rolling bearings
1.1 ferrules（inner ring, outer ring）
    Inner ring, outer ring of thrust bearing are respectively called blowout patch and seat ring.

 


 1）ferrules（inner ring, outer ring）
     Inner ring, outer ring of thrust bearing are respectively called blowout patch and seat ring.
2）rolling element
    Rolling elements can be classfied into two large groups: balls and rollers. According to their different shapes, rollers can also classified into column roller, quill roller, taper roller, spherical surface roller, etc.
3）holder
   There are four kinds of holders: punch holder, industrial plastic moulding holder.

1.2 Classification of rolling bearings
    By their different contact angle, rolling bearings are mainly classified into radial bearings, thrust bearings; by structures of rolling elements and ferrules, rolling bearaings are classified into deep-chase bearing, self aligning ball bearing, angular contact ball bearing, thrust ball bearing, cylinderical roller bearing, needle roller bearing, self aligning roller bearing, self aligning roller thrust bearing, etc.
    By column number of rolling element, rolling bearings are classified into single column, double column and multi column（three columns, four columns）. in conclusion， rolling bearings can be classified according to（picture 1.2）。