High-speed drum gear couplings are usually lubricated with lubricating oil. The tooth surface requires continuous lubrication. The lubricating oil should be drained smoothly, otherwise the temperature of the tooth surface will rise and accumulate moisture and dirt. The lubricating oil needs to be filtered by a high-precision oil filter , The filtration degree is less than 10 microns, some important high-speed drum gear couplings can also adopt the structure of oil collecting groove hole, that is, the oil collecting groove is machined in the shaft hole of the external gear, and the oil collecting groove is drilled at the bottom of the tooth groove of the external gear The communicating oil holes use the centrifugal force generated by the high-speed operation of the drum gear coupling to spray oil into the meshing part of the inner and outer gears to make them fully lubricated.

　　The drum-shaped tooth surface of the drum-shaped gear coupling improves the contact conditions of the inner and outer teeth, avoids the disadvantages of spur tooth end edge extrusion and stress concentration under angular displacement conditions, and improves tooth surface friction at the same time , Wear conditions, reduce noise, and long maintenance cycle.The drum-shaped gear coupling can allow a larger angular displacement relative to the straight-tooth coupling.And the contact conditions of the teeth are improved, so that the ability to transmit torque is improved, and the service life of the coupling is prolonged.Gear couplings have small radial dimensions and large load-bearing capacity. They are often used in shafting transmissions under low-speed and heavy-duty conditions. High-precision and dynamically balanced gear couplings can be used for high-speed transmissions, such as gas turbine shafting. transmission.Compared with straight gear couplings, drum gear couplings have reasonable structure, high meshing accuracy and good external compensation performance.Therefore, it is more and more widely used in mechanical transmission equipment.