If the drum gear coupling is guaranteed to work reliably, good lubrication is indispensable, and replacement can slow down wear.Most of the high-speed drum gear couplings are lubricated by lubricating oil. The lubricating oil needs to be filtered by a high-precision oil filter with a filtration degree of less than 10 microns. The tooth surface requires continuous lubrication, otherwise the temperature of the tooth surface will increase and moisture and water will accumulate. Dirt, some high-speed drum gear couplings sometimes use the structure of the oil collecting groove, that is, the oil collecting groove is machined in the shaft hole of the external gear, and the oil hole communicating with the oil collecting groove is drilled at the bottom of the external gear tooth groove, in order to make it fully To get lubricated, we use the centrifugal force generated by the high-speed operation of the drum-shaped gear coupling to spray the oil into the meshing part of the inner and outer teeth.

　　The so-called drum tooth means that the external tooth is made into a spherical surface, the spherical surface is on the gear axis, and the tooth side clearance is larger than that of a general gear.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.