Trusted and Proven NEMA frames available, Class F insulation with Class B Temperature Rise Design, High Efficiency, Long life motors, Heavy Duty, Ball Bearing NEMA 48 Fr, High Starting Torque, Low Noise Design, Powder Coated Body, ISO 9001:2000 Certified Plant, Models Available in 110V, 60hz, ISI Marked Models Available, Low Temperature Rise, Low Voltage Operation Upto 160V, Preferred by all Key Grinder Manufacturers