NAE PE444TC-125-4C Crusher Duty Electric Motor used for Crushing and pulverizing equipment; Other industrial machinery requiring extremely high starting torques and breakdown torques; Suitable for use with variable frequency drives> Service factor: 1.15 @ 60 Hz; 1.0 @ 50 Hz; NEMA Design B Performance/ High starting torque; F1/F2 reversible; Dual-drilled feet for mounting flexibility; Lifting provision. Class F insulation system; Class B rise at full load; Class H vacuum pressure impregnation (VPI) resin for all windings; Heavy duty cast iron housing with corrosion-resistant epoxy paint, stainless steel nameplate and zinc plated hardware; IP55 protection; Condensation drain with plugs. Regreasable open bearings; Insulated bearing on ODE; 3-year warranty (extended warranty available)