We have manufacture  SEEPEX.NETZSCH，MONO，Allweiler brand screw pump spare parts,

The rotor can be divided into two types: hollow and solid, and there are single, double-headed, multi-head and other specifications. The rotor material includes alloy steel quenching, 304 coating, 316L coating, and binocular stainless steel. Surface treatments consist of hard chrome plating, tungsten carbide, high roller and so on. Advantages of hollow rotor:

1. After reducing the weight of the hollow rotor, the axial torque compared to the conventional rotor is weakened, the starting torque is reduced, the geared motor is smaller, and the customer's usage cost is significantly lowered, thus achieving environmental protection and energy saving.

2. Since friction is closely related to weight, compared to the same solid rotor, after the weight is reduced, the rotor friction of the pump is decreased during operation, leading to a year-on-year increase in service life.

3. The vibration of the pump is significantly reduced during fast starts and high-speed operation.

4. During the operation of the equipment, the noise distribution is greatly reduced, resulting in no noise pollution.