Points for Attention in Selection of WGT Type Intermediate Sleeve Gear Coupling

When the WGT type gear coupling is working, the two shafts produce relative angular displacement, and the tooth surfaces of the internal and external teeth periodically slide relative to each other in the axial direction, which will inevitably cause tooth surface wear and power consumption. Therefore, the gear coupling Need to work in a good and sealed state.Gear couplings have small radial dimensions and large load-bearing capacity. They are often used in shaft transmissions under low-speed and heavy-duty conditions. The dynamically balanced gear couplings can be used for high-speed transmissions, such as gas turbine shaft transmissions.

Attention points for correct selection of WGT type connecting middle sleeve gear coupling:

[1] The WGT type gear coupling with intermediate sleeve is composed of at least one diaphragm and two shaft sleeves.The diaphragm is fastened to the sleeve with a pin and generally will not loosen or cause backlash between the diaphragm and the sleeve.Some manufacturers provide two diaphragms, and some provide three diaphragms, with one or two rigid elements in the middle, and the two sides are connected to the shaft sleeve.

〔2〕The characteristics of the WGT-type coupling with the middle sleeve gear coupling are a bit like a bellows coupling. In fact, the way the coupling transmits torque is similar.The diaphragm itself is very thin, so it is easy to bend when the relative displacement load is generated, so it can withstand up to 1.5 degrees of deviation, while generating a lower bearing load in the servo system.

〔3〕WGT type coupling with intermediate sleeve is often used in servo systems. The diaphragm has good torque rigidity, but it is slightly inferior to the bellows coupling.

[4] On the other hand, the WGT-type intermediate sleeve gear coupling is very delicate, and it is easy to be damaged if it is misused or not installed correctly during use.Therefore, it is very important that the deviation is within the tolerance range of the normal operation of the coupling.

〔5〕Adjust the model according to the shaft diameter:

The initially selected coupling dimensions of the bearing coupling, that is, the shaft hole diameter d and the shaft hole length L, should meet the requirements of the shaft diameters of the driving and driven ends, otherwise the coupling specifications must be adjusted according to the shaft diameter d.

It is a common phenomenon that the shaft diameters of the main and driven ends are different. When the torque and speed are the same, and the shaft diameters of the main and driven ends are different, the coupling model should be selected according to the larger shaft diameter.In the newly designed transmission system, the seven shaft hole types specified in GBT3852 should be selected, and the J1 shaft hole type is recommended to improve versatility and interchangeability. The shaft hole length is in accordance with the i-bearing coupling product standard. .