8-Inch Encapsulated Motor

Franklin’s 8-inch encapsulated submersible motor is a heavy‑duty induction motor designed for large, demanding water wells that require high flow rates, deeper installations, and long-term reliability.

• Built for dependable operation in vertical 8-inch diameter or larger high-capacity water wells.

• Delivers large volumes of water for irrigation, community water systems, industrial plants, and other high-flow or high-pressure pumping applications.

• Full 3525 RPM design point provides superior pump head and flow yield for deep‑set submersible pump installations.

• Winding encapsulated in anti-tracking resin and hermetically sealed stator area help protect against moisture and electrical breakdown, extending motor life.

• Kingsbury-type water‑lubricated thrust bearing and FES91 exclusive water‑based bearing lubrication system support smooth, maintenance‑free operation under heavy thrust loads.

• Water Bloc removable lead connection and double‑flanged design simplify handling, cable connection, and pump mounting for installers.

• Splined stainless steel shaft maximizes shaft‑to‑coupling contact for efficient, reliable power transfer to the turbine pump.

• Copper bar rotor ensures consistent performance and high operating efficiency over the life of the motor.

• Pressure‑equalizing diaphragm helps protect internal components from pressure fluctuations in deep wells.

• SubTrol heat sensors are standard on all 8-inch encapsulated 30 °C motors for enhanced thermal protection and monitoring.

• Select models are NSF/ANSI 61 certified, making this 8-inch submersible motor suitable for potable drinking water applications.

• Options include 6‑lead (Y‑Delta) designs, 316 stainless steel construction, and Sand Fighter shaft seal configurations for sandy, corrosive, or otherwise challenging well conditions.