The bearing belongs to the 75 project in Class 7.

The specific projects are as follows:?

75 couplings, transmission belts and other machine parts for machine transmission?

automatic oiling bearing 727?

ball bearing 749?

machine bearing bracket 791, machine bearing bracket 791,?

bearing (machine part) 713?

drive shaft bearing 729?

rolling bearing (roller) 7338?

bearing ball 7339?

ball bearing 7339?

bearing ball ring 7339?

Wear-resistant bearing for machine 7396

※ Ball C7351,?

bearing C7431?

vehicle bearing C7432?

conveyor belt 736,

machine belt 774,?

pulley tape 7314?

belt pulley adhesive tape 7314

※ Parallel adhesive tape (including conveyor belt and conveyor belt, excluding engine drive belt of land vehicles) C7359,

V-belt C736,?

fan tape (excluding land vehicle engine fan drive belt) C7361