-         Use steel as axle sleeve, apply for heavy load transmission equipment, such as Lift, Construction machinery

-         Similar to HZ-A, but apply for more big aperture installation occasion

-         Compact design, small moment of inertia

 You may find this type is very similar with HZ-A  resilient coupling with spider ,Yes their brother design,just this design th shaft hole is more bigger than the HZ-A jaw rubber shaft coupling,It is suitable for more shaft hole size under same torque and rotation speed .It maximum shaft hole size can up to 400mm.