The straight parts of the joint surface coupling method, end face of the rotating base runout tolerances for the 6 class, the other end circular run out tolerance level 7; cooperation oriented facing surface, radial rotation base runout tolerances for the 6 class; the other cylinder radial runout tolerances and grade was 7 face, face; cooperation oriented base of coaxial rotation tolerances for the 5 class. The seller of the coupling shall specify the required tightening torque value, and the straight flange of the wheel hub and spacer shall be provided with reaming holes, bolts and self-locking nuts, and the hole size and service belt shall be H8. The bolt shall be limited to a certain mass range, and shall be adversely affected by the balance of the shaft when it is exchanged. When the purchaser requests the shaft insulator for electrical insulation, the case shall be provided with a spacer sleeve, and the electrical insulation shall be provided on the flange joint and the bolt.

The straight parts of the joint surface coupling method, end face of the rotating base runout tolerances for the 6 class, the other end circular run out tolerance level 7; cooperation oriented facing surface, radial rotation base runout tolerances for the 6 class; the other cylinder radial runout tolerances and grade was 7 face, face; cooperation oriented base of coaxial rotation tolerances for the 5 class. The seller of the coupling shall specify the required tightening torque value, and the straight flange of the wheel hub and spacer shall be provided with reaming holes, bolts and self-locking nuts, and the hole size and service belt shall be H8. The bolt shall be limited to a certain mass range, and shall be adversely affected by the balance of the shaft when it is exchanged. When the purchaser requests the shaft insulator for electrical insulation, the case shall be provided with a spacer sleeve, and the electrical insulation shall be provided on the flange joint and the bolt.