Nidec HO25S25LF - Introducing the Vertical HOLLOSHAFT® High Thrust Motors, a three-phase, weather protected type I (WPI), premium efficient motor designed for use on turbine, mix flow, and propeller pumps. These motors are built to deliver exceptional performance and reliability in demanding applications. Featuring Class F insulation, Class B temperature rise at full load, and a 1.15 service factor, they ensure safe and efficient operation. With a maximum ambient temperature of 40°C and altitude capability up to 3,300 feet, they are suitable for various environments. The motors offer a premium efficient design, special balance, corrosion-resistant mill & chemical duty paint, and a 115-volt space heater for optimal performance and longevity. They also feature Non-Reverse Ratchet (NRR) and Self-Release Coupling (SRC) options.