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 Diameter 4″
Power Range (kW) Single Phase :  0.37 – 1.5kW, Three Phase:  0.37 – 7.5kW
Speed 2900 rpm
Versions Single Phase : 230V, 50Hz, Three Phase : 380V -415V, 50Hz
Method of Starting Single 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 Load 0.37 – 0.55kW – 1500N          0.75 – 1.5 kW- 3000N, 2.2 – 7.5kW – 6500N
Type of Duty S1 (Continuous)
Degree of Protection IP 68
Class of Insulation F
Max.Temperature of Liquid 33˚C
Minimum Cooling Flow Along the Motor 0.15 m/sec
Starts per Hour Single Phase – 20 Times, Three Phase – 12 Times
Available M.O.C Type 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