How to master the difference of bearing type

Bearing models include front code, base code, rear code

The basic code represents the basic type, structure and size of the bearing. It is the basis of the bearing code; Front and rear codes are supplementary codes added to the left and right of the basic code when the structural shape, size, tolerance, and technical requirements of the bearing are changed.

Basic code The basic code other than needle bearings consists of bearing type code, size series code, and inner diameter code.

Type code:

0 Double row corner contact ball bearing

1 Center ball bearing

2 Center roller bearings and thrust center roller bearings

3 conical roller bearings

4 Double row deep groove ball bearings

5 thrust ball bearings

6 deep groove ball bearings

7 Angle contact ball bearing

8 thrust cylindrical roller bearings

N cylindrical roller bearings

Double or multiple columns are represented by the letter NN

U outer ball bearings

QJ four-point contact ball bearing