NTN/NSK bearings single row angular contact bearing model for example for 7310 BDB suffix meaning :

B-40 ° so that they can not be exchange between each other, contact angle; A--25 ° matching is done in bearing factory  contact Angle; C-15 ° contact angle; J- pressure steel cage ; LI-machine cut copper alloy cage ; DB-back to back configuration; DF-face to face configuration; CS-radial clearance than standard clearance (SKF use axial clearance).

The typical NTN. In many user FAG bearing warehouse found that the bearing cage that most is strike pressure steel keep f, not the brass keep frame.

 
NTN/NSK bearings standard single row angular contact precision is ordinary level, SKF bearing accuracy is  at  p6 level, bearing is "any set ", the great convenience to the user's use and the optimization of the inventory management. NTN, NSK bearing have opposite and ordinary precision grades, and matching is in the factory finish, users have to strictly follow the bearing designated models.



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