The safety coupling http://www.lqlzq.com/Default.html 1 Zhang friction: AMN type within safety coupling: a structure type safety coupling friction, by the use of two cylindrical coil spring ring clamping the middle of the bow-type friction plate creates friction between the friction pair, decided the size of the friction coupling the slide torque. Replace the spring to adjust the slip torque of the coupling. Transmitted torque exceeds the slip torque of the coupling, the coupling main, between the driven side slip; couplings on both sides when the transmitted torque is below the sliding torque relative sliding, automatically return to normal job. In the use of the range of normal work, and generally do not need replacement parts, the correct selection of the premise of the the safety coupling Zhang friction AMN type can effectively part of the slow shaft drive starter impact load, the machine uniformly accelerated start , at the same time to prevent overloading burning motor. Working conditions need to overload safety protection, can be used to avoid the destruction of the key components. 2: MAL sprocket friction the safety couplings sprocket friction safety coupling is a type of elastic element flexible safety couplings, coupling halves by a double row roller chain coupling, sprocket and can be generated between the friction plate relative sliding, from the security role, the torque determined the amount of compression according to the disc spring. The safety coupling sprocket friction characteristics (1) has a small amount of shock absorption, cushioning and compensation performance. (2) from the motor and other parts of the security role. (3) The assembly and disassembly and easy maintenance. (4) work reliable, long service life. (5) can be used wet or dusty and other harsh conditions. (6) can be achieved automatic power-off alarm. (7) Change sprocket gear or pulley transmission form. To expand the scope of use.