Have a higher flexibility , torsional stiffness and damping ability , the compensation amount is larger ,Good damping , simple structure , without lubrication, detachably easy maintenance . Noise is small, and the large radial dimension , low carrying capacity , additional loads produce greater axial overload , Using life depends on the quality of rubber products suitable for frequent start reversing the ever-changing , shock and vibration shaft drive ,Can work in the dust , moisture conditions environment , does not apply to the high-temperature , high-speed , high torque and low speed and high load conditions conditions .