Submersible motors

F.B.’s 8’’ rewindable motors are studied for long-term operation in wells with diameters of 8” or greater.
Water-lubricated axial and radial bearings ensure a long service life and maintenance-free operation.
The motors are pre-filled with a special antifreeze fluid so that they can be stored down to -15°C.
A special membrane compensates the pressure inside the motor.
BRONZE-ALUMINIUM, AISI 316, DUPLEX, AISI 904L and SUPER DUPLEX motors are available for applications in aggressive water.
 

From 22kW to 110kW
Flange: 8” NEMA
Protection rating: IP68
Insulation class: Y (PVC version), F (PE2+PA version), F (HT version)
Number of starting each hour: Max. 10
Installation: vertical or horizontal
50-60 Hz voltage tolerance: -10% / +10%
Minimum cooling rate: 0,15m/s
Installation below the water level: up to 500m
Max. storage temperature: -15°C / +60°C
Motor Cable (WRAS, KTW, ACS approved) food grade 0,6 / 1kv

• Industry-leading efficiency with low operating costs
• Sand protection: the sand-guard and silicon-carbide SIC-SIC mechanical seal protect against sand during operation
• The cast iron motor support has been treated with cataphoresis to prevent corrosion (STANDARD version)
• The “Michell” bi-directional thrust bearing made of a resin and graphite compound can withstand up to 70.000N
• The rotors are balanced and ground along the whole axis
• The stators are generously dimensioned
• The windings are made by hand
• Disassembly and maintenance is exceptionally simple
• The power cable complies with drinking water regulations
• The motors are pre-filled with clear water and propylene glycol
• Ready for installation of a PT100 sensor