Submersible Motors

Gransa “GR series” motors are deep well / borehole encapsulated submersible type, pre filled with anti-freeze agent as lubricant. These motors are available in single phase and three phase power supply. All single phase motors are thermally protected and specific ranges are in-built with lightening arrester. Rotors are supported with bush and thrust bearings to withstand maximum axial and radial thrust loads. All mounting dimensions are in accordance with NEMA standards.


Nominal Diameter4″
Power Range (kW)Single Phase :  0.37 – 1.5kW, Three Phase:  0.37 – 7.5kW
Speed2900 rpm
VersionsSingle Phase : 230V, 50Hz, Three Phase : 380V -415V, 50Hz
Method of StartingSingle Phase – Capacitor Start and Induction Run (CSIR) up to 0.75kW, Capacitor Start and Capacitor Run (CSCR) up to 1.1kW,  Three Phase – Direct On Line(DOL).
Maximum Down Thrust Load0.37 – 0.55kW – 1500N          0.75 – 1.5 kW- 3000N, 2.2 – 7.5kW – 6500N
Type of DutyS1 (Continuous)
Degree of ProtectionIP 68
Class of InsulationF
Max.Temperature of Liquid33˚C
Minimum Cooling Flow Along the Motor0.15 m/sec
Starts per HourSingle Phase – 20 Times, Three Phase – 12 Times
Available M.O.CType A


  • High effieicency
  • Thermal protection in single phase motors, lightening arresters in specific models
  • Corrosion resistant stainless steel motor body
  • Extremely hardwearing water lubricated bearings


  • Residence
  • Agriculture
  • Gardens
  • Sprinkler systems
  • Fountains
  • Building services