Baker Submersible Motors

Baker Water Systems manufactures a complete line of submersible motors engineered to pair seamlessly with Baker pump ends and built to deliver years of reliable service in demanding well environments. From a 1/2 HP residential well motor to a 250 HP municipal workhorse, every Baker submersible motor features stainless steel construction on all water-contact surfaces, Kingsbury-type self-centering thrust bearings for superior axial load handling, and glycol-water cooling and lubrication systems that protect internal components throughout the motor's service life. All 4-inch motors are CSA certified, carry Class F insulation, and are rated IP68 for complete submersion protection down to 984 feet.

Baker's 4-inch motor lineup is available in both two-wire and three-wire configurations to match your installation requirements. Two-wire motors range from 1/2 to 1-1/2 HP with the capacitor built into an internal Noryl cartridge — meaning no external control box is needed, which simplifies installation and reduces costs for standard residential wells. Three-wire motors extend the range from 1/2 HP all the way to 10 HP in single-phase and three-phase options, with voltage configurations available in 115V, 230V, 460V, and 575V. Three-wire motors require an external control box (single phase) or starter kit (three phase), but offer the advantage of VFD compatibility for constant-pressure applications using Baker's AutoDRIVE variable frequency drives. Three-wire construction also places the starting components above ground where they're accessible for service rather than sealed inside the motor.

For commercial, industrial, and municipal installations requiring higher output, Baker offers 6-inch motors from 5 to 60 HP, 7-inch motors from 30 to 75 HP, 8-inch motors from 40 to 150 HP (available in both cast iron and stainless steel), and 10-inch motors from 125 to 250 HP. These larger motors operate on 460V three-phase power and are built to NEMA dimensional standards for direct compatibility with Baker's 6", 8", and 10" stainless steel pump ends. As an authorized Baker dealer, Watermain Supply carries motors across the full range and can help you match the right motor to your pump end, well casing diameter, electrical service, and control configuration — whether you need a straightforward residential replacement or a complete commercial pump station assembly.