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 the oil collecting groove hole, that is, the oil collecting groove is machined in the external gear shaft hole, and the oil collecting groove is drilled at the bottom of the external gear tooth groove to communicate with the oil collecting groove. The oil hole of the drum-shaped gear coupling uses 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 it fully lubricated.
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