Tilas
Mechanical
- Feb 17, 2013
- 48
Hi,
We have currently purchased one small multistage(16 stages) 50 Hz pump for water service and was asking the Vendor to have a complete rotor balancing for it. However the Vendor replied that they would only balance the shaft, stage impellers with keys (not including the half coupling and suction-first stage impellers) at operating speed (Bal Grade ISO 2.5). They said that the couplings and first stage impellers will be balanced separately at Bal Grade ISO 2.5).
Will it be difficult for OEM's to balance the rotor with the coupling hub and first stage impellers for Vertical Pump Rotors?
Thanks in advance,
Kristian
We have currently purchased one small multistage(16 stages) 50 Hz pump for water service and was asking the Vendor to have a complete rotor balancing for it. However the Vendor replied that they would only balance the shaft, stage impellers with keys (not including the half coupling and suction-first stage impellers) at operating speed (Bal Grade ISO 2.5). They said that the couplings and first stage impellers will be balanced separately at Bal Grade ISO 2.5).
Will it be difficult for OEM's to balance the rotor with the coupling hub and first stage impellers for Vertical Pump Rotors?
Thanks in advance,
Kristian