Logo PD Water Systems
Pearl - 4" Submersible Motors
4MWP 2W - Submersible Motors

Four inch, asynchronous, two pole submersible motor, made in AISI 304 stainless steel for parts in contact with water. Cooling and lubrication of the thrust bearing assembly and carbon brushes is provided by a mixture of water and glycol. 

The Squirrel-cage rotor mounted on Kingsbury self-centering thrust bearing. Stator housed in an airtight stainless steel casing  (canned-type) with both flanges and shell in AISI 304L stainless steel. 

PEARL MOTORS suitable for use with variable frequency drive (30Hz – 60Hz). The capacitor is placed in the Noryl cartridge directly connected to the motor, so the motor does not require an external control box. Thermal protection included in the motor.


  • All PEARL 2 WIRE motors are provided with a removable cable connector. This solution allows fast assembly/disassembly of the pump end and makes easier maintenance operations.

  • Kingsbury type thrust bearing unit consisting of tilting pads made of highly-resistant stainless steel and machined using spherical lapping process; this machining guarantees high reliability and high resistance to axial load to this strategic component.

  • Die cast Aluminum rotor with shaft end made of Stainless Steel AISI 431.

  • Running capacitor inserted in a case made of high density plastic material, electrically isolated by epoxy resin.

Make click to enlarge the image or other views