The importance of lubricating oil to drum gear couplings

The drum gear of the drum gear coupling is actually to make the outer teeth into a sphere, and then the center of the sphere is on the axis of the gear, and the clearance of the tooth side is larger than that of the general gear. Drum-toothed couplings allow greater angular displacement than straight-toothed couplings. And make the tooth contact conditions to improve, so that the ability to transfer torque is improved, prolong the service life of the coupling.

Clearance match directly affects the service life of drum gear coupling, the clearance between the circumference and the hole, according to the standard to have the corresponding size match, that is, the degree of accuracy; The clearance between the connector and the coupling, its coordination will not only affect the product damage life, but also bring the transmission performance of the whole equipment, rigid coupling will also cause noise. The length of the drum gear coupling gap and other problems, in the operation of mechanical equipment if the transmission parts to move back and forth will bring friction, damping pad plum coupling, star coupling especially prominent friction will double damage the connection pad. Good lubrication can effectively reduce wear if the drum gear coupling works reliably.

Most of the drum gear couplings used in high speed will be lubricated with lubricating oil, because the lubricating oil needs to be filtered by the oil filter with higher accuracy, the filtration degree is less than 10 microns, the tooth surface requires continuous lubrication, otherwise the tooth surface temperature will rise and will accumulate water and dirt, some high-speed drum gear couplings sometimes also use the structure of oil collecting slot, That is, the oil collecting groove is processed in the shaft hole of the outer gear, and the oil hole communicated with the oil collecting groove is drilled out at the bottom of the tooth groove of the outer gear. In order to make it fully lubricated, the oil is injected into the meshing place of the inner and outer teeth by the centrifugal force generated by the high-speed operation of the drum gear coupling.