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  Summary:The slider coupling is also known as the metal cross slider coupling. Its slider is circular and made of steel or wear-resistant alloy. It is suitable for the specific size and technical parameters of the cross slider coupling. The speed is low. Transmission with larger torque.

　　Definition and composition of slider coupling:

　　The slider coupling is also known as the metal cross slider coupling. Its slider is circular and made of steel or wear-resistant alloy. It is suitable for the specific size and technical parameters of the cross slider coupling. The speed is low. Transmission with larger torque.The slider coupling is composed of two half couplings with grooves on the end faces and an intermediate disc with protruding teeth on both sides.Because the convex teeth can slide in the groove, the relative displacement between the two shafts during installation and operation can be compensated.The slider coupling is composed of two shaft sleeves and a central slider.The center slider is usually made of engineering plastic as a torque transmission element, and other materials, such as metal materials, can be selected under special circumstances.

　　Characteristics of slider coupling:

　　The material of the sliding block coupling parts can be 45 steel, and the working surface needs to be heat treated to increase its hardness; Q275 steel can also be used when the requirements are lower, without heat treatment.In order to reduce friction and wear, oil should be injected from the oil hole of the middle plate for lubrication during use.Because the half-coupling and the intermediate disc form a moving pair and cannot rotate relative to each other, the angular velocity of the driving shaft and the driven shaft should be equal.However, when working with relative displacement between the two shafts, the middle disk will generate a large centrifugal force, which will increase the dynamic load and wear.Therefore, pay attention to the working speed not greater than the specified value when selecting.This kind of coupling is generally used at a rotation speed n<250r/min, where the shaft stiffness is relatively large and there is no severe impact.

　　The central sliding block is connected with the shaft sleeves on both sides by 90° oppositely distributed clamping grooves on both sides, so as to achieve the purpose of transmitting torque.The center sliding block and the shaft sleeve are matched with a slight pressure, which enables the coupling to run with zero clearance during the operation of the equipment.As the use time increases, the slider may lose its recoilless function due to wear, but the center slider is not expensive and easy to replace, and it can still play its original performance after replacement.Slider couplings are often used in common motors. In some cases, they can also be used to connect servo motors. The relative displacement can be corrected by the sliding of the center slider during use.Because the resistance to the relative displacement is the friction between the slider and the sleeve, the bearing load between them will not increase due to the increase in the relative displacement.