FM Type

by Coel Motori S.r.l.

Asynchronous Self-braking Three-phase Motor

FM series brake motors are closed and externally ventilated.  They cover a range between frame sizes of 225 and 315 and are designed for heavy duty application.  FM motors frames are made in G20 cast iron and the brakes that are mounted are DC supplied with rectifier mounted inside the terminal box.  FM brake motors are available with a variety of options, such as forced ventilation, encoder, brake sensors, thermal protectors and many others.  Please contact our office for more information.  FM Brake motors are available in single or double speed.

Standard Features

  • Disk brake without axial sliding of the shaft
  • Adjustment of braking torque within very large values
  • Brake operation with very low noise
  • DC electromagnet a standard


Correct installation of the motor and mechanical components coupled with it is crucial for the operation and life of the motor.  The motor must be handled with care, avoiding any hard blows, particularly against the shaft.

Before coupling the motor with any other mechanical component be sure that all parts in good condition, properly cleaned and treated with the proper cleaner.  The motor must be installed in a position that permits proper ventilation, air flow should not be hindered. Check that all components are perfectly aligned and grounding wire is connected.  Apply the correct feed cable to the motor based on motor name plate rating and local applicable standards.

COEL brake motors are designed with reduced maintenance requirements; however motors do require periodic maintenance such as cleaning including the shell, particularly in cases where the motor works in dusty and dirty environments.  Additionally it is recommended that the magnetic gap between the mobile anchor and the electromagnet be adjusted periodically (every 6 months or 500,000 brake cycles); Air gap must be maintained below 0.5mm (19"/thou) at all times.  

All installations should be inspected and maintained by authorized technician once electrical power is disconnected.  Failing to undertake the necessary safety, inspection and maintenance measures could result in bodily injury and product failure. Authorized technician must inform maintenance and plant supervisors of anomalies such as excessive vibrations, high level noises, high absorption levels and high temperature level.

Motors are supplied with user guide including maintenance instruction manual.  For further information please contact our office 1.888-558-9956