1.Applicable to all types of machinery and hydraulics. 2.Small volume and large transmitted torque. 3.To be plugged in axially,easy assembly,maintenance-free. 4.Balancing axiad,radial and angular misalignment. 5.Dimensions of bore d,d1 available on customer’s request. 6.Applicable from -40℃ to +100℃,temperature peaks up to 120℃.