4 inch encapsulated motors

More than 80 years after the establishment of Franklin Electric, we continue to manufacture and distribute improved versions of this unrivaled motor design all around the world, and have expanded our expertise to create innovative solutions, including pumps, electronics, and adjacent products, addressing modern industry challenges and serving our customers’ needs.
Ratings: 0.25 kW - 9.3 kW
Frequency: 50 Hz (PSC 1~, 2-wire, 3- wire / 3~), 60 Hz (3- wire / 3~)
Thrust load: 4 kN / 6.5 kN
4" NEMA mounting design with studs
Stainless steel splined shaft
Stator shell in 316SS
Factory filled with Franklin’s non-toxic water soluble fill solution
StatorSHIELD™ - Franklin encapsulation system with hermetically-sealed windings
Liquid lubricated radial bearings
High capacity Kingsbury type thrust bearing for 100 % maintenance free operation
Field replaceable lead using Franklin’s exclusive Water Bloc technology with extended jam nut in Stainless steel
High efficiency electrical design for low operation costs
Drinking water approvals
Suitable for use in water with increased salinity
Electrical Designs: 1 ~ PSC / 2-wire 1~ / 3-wire 1~ / 3~
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The Franklin Electric four inch motor is available in the following variants:
The single-phase version as PSC, 2-wire and 3-wire and the 3-phase version as Standard and High-thrust version. In addition, the motor is available as High Efficiency permanent magnet motor.
The motors have a standard 4-inch NEMA mounting design and a 316SS stator housing. Leads are easily replaceable thanks to Franklin's exclusive Water Bloc technology.
Franklin Electric encapsulated motors are equipped with hermetically-sealed windings. The Anti track stator resin mechanically supports the winding and provides fast heat dissipation.
The hydrodynamic liquid-lubricated radial bearings and Kingsbury type thrust bearing ensure 100% maintenance-free operation of the motor.
The high-thrust version is equipped with a spring-loaded pressure-equalizing diaphragm. The thrust load of the thrust bearing is 6500 Newton. The stator housing of this motor is made of 304SS.
The 4 inch encapsulated motors are available in the power range up to 3 kW, the 6500 Newton version up to 9.3 kW. The voltage ranges are 220/230 volts for the single-phase version, for the three-phase motor 380 to 415 volts at 50 hertz and 460 volts at 60 hertz.
All motors have drinking water approvals.
Optional there are further material versions and special voltages as well as the SiC sealing system with SiC mechanical seal and sand protection and the permanent magnet technology.