Lubrication of gear drives
Open gear transmission is usually lubricated by manual and regular oil, and lubricating oil or grease can be used. Generally, the lubrication method of closed gear transmission is used.
According to the size of the peripheral speed QV of the gear, oil pool lubrication is often used when V<=12, and oil pool lubrication is not suitable when V>12.
This is because:
(1) The peripheral speed is too high, and most of the oil on the gear is thrown out and cannot reach the meshing area.
(2) Too much oil stirring will increase the temperature of the oil and reduce the lubricating performance.
(3) It will stir up the impurities deposited at the bottom of the box and accelerate the wear of the gears. Oil injection lubrication is often used.