The material of slider coupling parts can be 45 steel, and the working face needs heat treatment to improve its hardness; When the requirements are low, Q275 steel can also be used without heat treatment. In order to reduce friction and wear, oil should be injected from the oil hole of the middle plate for lubrication. Because the semi-coupling and the intermediate disk form a moving pair and cannot rotate relatively, the angular velocity of the driving shaft and the driven shaft should be equal. However, when there is relative displacement between the two shafts, the intermediate disc will produce great centrifugal force, thus increasing the dynamic load and wear. Therefore, it should be noted that the working speed cannot be greater than the specified value. This kind of coupling is generally used for rotating speed n
The small pressure between the central slider and the shaft sleeve can make the coupling run with zero clearance during the operation of the equipment. With the increase of service time, the slider may lose its recoilless function due to wear, but the center slider is inexpensive and easy to replace, and it can still play its original performance after replacement. Sliding block coupling is often used in general motors, and can also be used to connect servo motors in some occasions. During use, the relative displacement is corrected by the sliding of the central slider. Because it is the friction between the slider and the shaft sleeve that resists the relative displacement, the bearing load between the slider and the shaft sleeve will not increase because of the increase of the relative displacement.