1. Application scope: Crane accessories.
2. Drum units is constituted by drum, shaft, gearwheel, hub, bearing body and bearing.
3. The material of drum is usually no less than HT20-40 cast iron, ZG25,ZG35 or Q235B, Q345B welding steel plate is also able to be the material for special needs.
4. Drum units applies to the large tonnage crane machinery which needs high-performance.