The meaning of the suffix of NTN / NSK single row angular contact bearings as follows:

B - 40 ° contact angle; A - 25 ° contact angle; C - 15 ° contact angle; J - Steel Cage hit pressure; LI - machine cut copper alloy cage; DB - back-to-back configuration; DF - face-to-face configuration; CS - Radial clearance greater than standard clearance (SKF Axial Clearance of use).

A typical example for NTN Bearing Model 7310BDB. It is found in many users'bearing warehouse ,the bearing cage mainly are pressure steel cage,not brass cage.

NTN / NSK standard single row angular contact bearings for general-level accuracy, and the pair are completed in the bearings factory . SKF bearings are P6 precision grade,the bearings are "arbitrary group allocation", which greatly facilitate the user's use and optimization of inventory management. NTN and NSK Bearings contrast with the general accuracy of Level, and the pairing is completed in the factory, so they can not mutually interchangeable, the user has to strictly follow the specified type bearings.