Characteristics and application of combined bearing:
With the development of science and technology, to save materials and space and reduce the design, manufacture, the workload of installation and debugging, improve accuracy, reduce costs, shorten the production cycle of machinery, bearing combined forward bearing (some fixed collocation of bearing made of various combined bearing, such as the development direction of needle roller and thrust roller combined bearing and bearing unit.

Specific classification and model comparison:
1. no inner ring combined needle roller and thrust ball bearings (NKX00)
2. no inner ring needle roller and thrust ball bearing with band combination (NKX00z type)
3. with the inner combined needle roller and thrust ball bearings (NKX00 ten IR)
4. a thrust ball bearing inner ring and the needle combined with band (NKX00Z ten IR)
5. needle and angular contact ball bearings (NKIA0000)
6. needle and three point contact ball bearing (type NKIB0000)
7. no inner ring combined needle roller thrust roller bearings (NKXR00 type)
8. no inner ring needle roller and belt cover thrust cylindrical roller combined bearings (NKXR.Z)
9. with the inner combined needle roller thrust roller bearings (NKXR ten IR)
10. with the inner and outer cover with needle roller thrust cylindrical roller combined bearings (NKXR.Z ten IR)
11. roller and double direction thrust cylindrical roller bearing (type ZARN)
12. with a flange roller and double direction thrust cylindrical roller bearing (type ZARF)