The material of the SL type cross slider coupling parts can be 45 steel, and the working surface needs to be heat-treated to improve its hardness; When the requirements are low, Q275 steel can also be used without heat treatment. To reduce friction and wear, oil should be injected into the oil hole of the intermediate disc for lubrication during use. Cross slider coupling, also known as metal slider coupling, has a circular slider made of steel or wear-resistant alloy, suitable for transmission with low speed and high transmission torque.