What Differences Between Vertical Hollow Shaft (VHS) Pump Motors and Vertical Solid Shaft (VSS) Motors?
Vertical hollow shaft pump motors are specialized for turbine pump applications, including power generation, municipal water irrigation,mining and chemical applications.It's suited for use with inverters or soft starters, and the efficiency of the VHS pump motors increased by 30%, they are more durable and reliable than their horizontal counterparts.
Vertical Hollow Shaft (VHS) Pump Motors
In a hollow shaft pump motor, the pump head shaft extends through the motor shaft and is attached to the top of the motor. The adjustment nut is located on top of the pump head shaft, simplifying the adjustment of the pump impeller strength. A stabilizing bushing is usually installed to keep the pump shaft stable and centered on the motor shaft. At start-up, the pump shaft, motor shaft and stabilizing bushing rotate simultaneously, producing mechanical stability comparable to that of a solid-shaft motor. Vertical hollow shaft pump motors are the most common motors used for deep well pumps, but they are also suitable for any pump operation that requires easy adjustment.
Vertical Solid Shaft (VSS) Motors
Vertical solid shaft pump motors are attached to a pump shaft near the bottom end of the motor. The shaft extension typically has a circular keyway to transmit pump thrust and a radial keyway to transmit torque. The lower coupling of the pump motor and pump shaft is more commonly used for storage tanks and shallow pumps rather than deep well operations.
Vertical hollow shaft pump motors are the smart solution for standard and high thrust installations.