MPM04 — 4" Water Filled Submersible Motor (60 Hz)
Majestic Pump's 4-inch (100 mm) water-filled submersible motor for 60 Hz supply — an IE3 high-efficiency borewell motor that runs cool on a clean, anti-corrosive water fill instead of oil, in single & three-phase up to 7.5 HP at 3450 rpm.
MPM04 Water Filled Submersible Motor — 60 Hz
A 4-inch (100 mm) water-filled submersible motor for borewell pumps where an oil-free fill is preferred, built for 60 Hz markets. The motor is filled with water and an anti-corrosive liquid that keeps the windings cool, while an IE3 high-efficiency electrical design lowers running cost. A high-strength stainless-steel shaft, specially designed thrust bearing and graded cast-iron housing make it dependable in continuous duty — available in single & three-phase up to 7.5 HP at 3450 rpm.
Overview
The MPM04 Water Filled motor is built for installations that need an oil-free drive. Instead of dielectric oil, it's filled with clean water and an anti-corrosive additive that cools the motor and protects the internals — so there's no risk of oil reaching the water supply. Its IE3 high-efficiency design runs cooler and cheaper, while a specially designed thrust bearing handles the high axial loads of deep-well pumping. Solid-soldered winding connections, an epoxy-coated rotor and a graded cast-iron housing with precisely fitted bushes round out a motor made for long, continuous service. This 60 Hz version runs at 3450 rpm on 230 V single-phase or 230/380/460 V three-phase, 60 Hz supply, for North American, Latin American and other 60 Hz markets.
Oil-Free Water Fill
Filled with water and an anti-corrosive liquid — cool, clean running with no risk of oil contaminating the borewell.
IE3 High Efficiency
A high-efficiency electrical design with cool-running windings to cut energy use and operating cost over long duty cycles.
Heavy Thrust Bearing
A specially designed thrust bearing withstands high axial thrust loads, with a graded cast-iron housing for rugged service.
Technical Details
Technical Data · Single Phase · 60 Hz
Features
- Suitable for 100 mm (4") and larger borewells
- Stainless-steel high-strength shaft
- High-efficiency electrical design — low running cost, cool-running winding
- Motor filled with water and an anti-corrosive liquid
- Specially designed thrust bearing for high axial thrust loads
- Winding connections with solid solder joints
- Special magnet provision in motor base & self-spring action diaphragms
- Epoxy powder coating on rotor
- Graded cast-iron housing with precisely fitted bush & bearing counter for horizontal pump-set use
- CED-coated motor assembly
- Built to NEMA standard
Applications
Standards & Compliance
- Manufactured to NEMA standard
- IE3 high-efficiency design
- IP 58 degree of protection
- Class F insulation system, S1 continuous duty
FAQ
Is this the 50 Hz or 60 Hz version?
This page covers the 60 Hz MPM04 (3450 rpm, 230/380/460 V). For 50 Hz markets (2800 rpm), see the MPM04 Water Filled (50 Hz) page.
How is the water-filled MPM04 different from the oil-filled version?
It's cooled by a clean, anti-corrosive water fill instead of dielectric oil, so there's no chance of oil reaching the water supply — preferred for potable and sensitive installations.
What borewell size does it fit?
It's a 4-inch (100 mm) motor with a 95 mm maximum outer diameter, so it fits 100 mm (4") and larger borewells.
Single-phase or three-phase?
Single-phase (0.5–7.5 HP, CSCR start, 230 V) suits domestic and light farm supplies; three-phase (1.5–7.5 HP, DOL start, 230/380/460 V) suits higher continuous loads. Contact us for the full three-phase 60 Hz rating table.
Can it be supplied matched to a Majestic pump?
Yes — it pairs directly with our submersible pumps for a complete, ready-to-run set. Contact sales for a combined quote.
Do you supply export quantities?
Yes — bulk and container-load supply with export-ready documentation. Reach out to our team for pricing and lead times.
Get a quote for the MPM04 Water Filled (60 Hz)
Share your borewell size, head and flow — we'll confirm the right rating, pricing and lead time.
Contact Sales