4M 4″ Oil filled rewindable submersible motors

4” oil filled rewindable submersible motors. Elevated starting torque, Mechanical compactness, reliability, superior performance together with the most complete range of products are the principal features marking the 4M motors.


  • Motor casing, shaft and bottom end made in Stainless Steel AISI 304
  • High resistance upper bracket of casting AISI 304
  • Axial and radial thrust ball bearings
  • Graphite-Ceramic standard mechanical seal
  • Special cooling fluid for a better lubricant effect to increase life of moving parts. The liquid with its high thermal capacity gives the motor superior overload capabilities
  • Oversized compensation diaphragm and sand slinger protection
  • Insulation class F – Protection IP 58
  • Removable cable connector
  • NEMA standard coupling dimensions
  • Easy to disassemble and to re-wind


  • Maximum voltage fluctuation admissible versus nominal rated voltage ± 10%
  • Maximum water temperature 35° C with at least 0,08 m/sec of water flow speed
  • Maxium water starting per hour: 30
  • Axial  thrust: 1500 N from 0,37 to 2,2 kW  / 2500N or 5000N from 3,0 to 5,5 kW / 6500N from 7,5 kW
  • Maximum immersion depth: 150 mt
  • Horizontal operation position: admitted up to 5,5 kW