What do bearing codes mean

release time：2018/10/11 13:03:26

The PSYZC bearing factory gives you a brief introduction about the bearing classification and the meaning of the code.From left to right, the first or first and second figure 

1.  

2. "6" refers deep groove ball bearing ( classification  0 ) 

3.  

4. "4" refers double row deep groove ball bearings ( classification 0 ) 

5.  

6. “2” or “1” refers self-aligning ball bearings (four numbers for basic models) ( Classification 1 ) 

7.  

8. "21", "22", "23" and "24" indicate spherical roller bearings. ( 3 categories) 

9.  

10. “N” refers cylindrical roller bearings (including short cylindrical rollers and a part of elongated needles) ( Classification 2 ) 

11.  

12. "NU" inner ring has no rib. 

13.  

14. "NJ" inner ring single rib. 

15.  

16. "NF" outer ring single rib. 

17.  

18. "N" outer ring has no rib. 

19.  

20. "NN" double row cylindrical roller with no ribs at the outer ring. 

21.  

22. "NNU" double row cylindrical roller with no ribs at the inner ring. 

23.  

24. "NA" turning outer ring needle roller bearing 

25.  

26. "NK" pressed housing needle roller bearings 

27.  

28. “K” needle roller and cage assembly, no inner and outer rings. 

29.  

30. "7" refers angular contact ball bearings ( classification 6 ) 

31.  

32. "3" refers tapered roller bearing (metric) ( classification 7 ) 

33.  

34. "51", "52" and "53" indicate centripetal thrust ball bearings (five numbers for basic models) ( classification 8) 

35.  

36. "81" indicates thrust short cylindrical roller bearings (classification 9) 

37.  

38. "29" indicates thrust spherical roller bearings ( classification 9)

This article is from PSYZC official website, for more info please contact www.psyzc.com