Gear coupling consists of various parts

The Gear Coupling is used to directly connect the coupling, and either end of it can be used as the main or driven end. 

The gear coupling is a coupling used to connect two shafts through an intermediate shaft. The sleeve end of the 

external gear should be connected to the intermediate shaft, and the flange end should be connected to the working 

shaft or motor shaft. When the externally toothed bushing is matched with other shaft extensions, the weight of the 

intermediate shaft shall not be greater than 2% of the circumferential force at the pitch circle meshing point calculated 

based on the nominal torque. When using CLZ type gear coupling, the critical speed of the high-speed rotating 

intermediate shaft must be checked.

The tools and equipment used in couplings are simple, versatile and low cost. Compared with cast blanks, free forging 

eliminates defects such as shrinkage cavities, shrinkage porosity, and pores, giving the blanks higher mechanical 

properties. The forging has simple shape and flexible operation. Therefore, it is of particular importance in the 

manufacturing of heavy machines and important parts. Coupling forging materials must have inspection certificates. 

If substitute materials are needed, the consent of the purchaser must be obtained and written documentation must be 

provided. Forgings should be forged on a water pressure or forging hammer with sufficient tonnage, and the forging 

should have a sufficient forging ratio to allow the entire section to be forged through to obtain a uniform structure.

Under the condition that the tooth root bending strength and tooth surface contact strength are sufficient, the tooth 

width should be determined with a large overlap, and the tooth width should not be increased blindly to avoid 

unnecessary increase in structural size. The general tooth width coefficient is 8-14. The tooth width should be determined 

by the allowable tooth root stress, and the width required for the displacement of the force point along the tooth width 

caused by the inter-shaft inclination angle. An oil hole connected to the oil collection groove is drilled at the bottom of 

the outer gear tooth slot, and the centrifugal force generated by the high-speed operation of the drum Gear Coupling 

is used to spray oil into the meshing area of the internal and external gears to fully lubricate it. It is beneficial to the 

operation of the coupling and extends its service life.When there is no radial displacement of the center lines of the two 

shafts, the deflection of each external gear shaft sleeve line to the axis of the internal gear gear caused by the non-axiality 

of the two link shafts should not be greater than 30 degrees. The necessary guarantee for the safe and reliable operation 

of gear couplings is also a necessary condition for slowing down wear. The gear coupling is composed of an inner ring gear 

with the same number of teeth and a flange half coupling with external teeth. External teeth are divided into two types: 

straight teeth and drum-shaped teeth. The so-called drum-shaped teeth are made of external teeth into a spherical surface. 

The center of the spherical surface is on the gear axis. The tooth side clearance is larger than that of ordinary gears. 

Drum-shaped gear couplings It can allow larger angular displacement, improve the contact conditions of teeth, improve the 

ability to transmit torque, and extend the service life. Contact state along the tooth width with angular displacement.