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OEG (Officina Elettromeccanica Gottifredi) is the leading manufacturer of electric motor brakes in Italy.  Starting in 1959 with the production of what has become the MS/FM 3ph AC brake, with continual innovation and improvements this has become the standard and most copied Italian Master of brakes in the world.   

  • Input Volts 230/400V50Hz and 230/460V/60hz 3ph (other voltages by request).
  • Braking force of 5 to 250 Nm (44 to 2219 in-lbs).
  • Eight standard sizes - 02, 03, 04, 05, 06S, 06, 07, 08.
  • S1 Service, CLF Insulation, Class B temp rise, IP54 protection standard (IP55 kit available).
  • Steel machined spline brake hub (stainless steel available at option).
  • Safe asbestos-free silent friction material.
  • Physically interchangeable with FM Series. 
  • Distributer Program Available, OEM Pricing on Request.

Technical Sheet PDF 

Installation & Maintenance PDF

MSFM Brochure PDF


  • Constructive Version UL 600V or 850V certified
  • All AC Volts to 600Vac are available on request.
  • Brake torque adjustable from 35% to 100% of rated.
  • No axial load is applied to motor shaft from braking.
  • Microswitch for brake release is available as an option. 
  • Microswitch for wear control is available as an option.
  • Anti-stick friction lining. 
  • Steel brake disc is standard, Stainless steel available optionally.
  • O-Ring anti vibration devise is available. 
  • IP55 dust/water kit is available (boot for brake and flinger seal for shaft). 
  • Stainless Steel motor fiction plate (motor side) available at option.
  • Stainless Steel ring on anchor side (optional).
  • Replaces ES AC (prior version). 
  • 100% Designed & Manufactured in ITALY, andLoved in America.