SW Type

by Coel Motori S.r.l.

Asynchronous Self-braking Three-phase Motor

SW series brake motors are closed but not ventilated, suitable for S2 or S3 duty (depending on polarity) with forced ventilation. 
This series has been designed for applications where the brake motor has frequent contact with water such as in marine environment.  These motors come painted for total protection, rated at IP66.  Motor frames are in aluminum for frame sizes 90 to 160 and cast iron for frame sizes 180 to 315.  Additional options such as anti condensation heaters, thermal protection, and epoxy painting and much more available upon request.

SW motors are available in single or double speed.  For technical details contact our office 1.877.664.2985

Standard Features

  • Disk brake without axial sliding of the shaft
  • Adjustment of braking torque within very large values
  • Brake operation with very low noise
  • SW motors are fitted with DC electromagnet a standard (Three-phase brake can be fitted on request on frames 112, 132 & 160)
  • Brakes mounted on SW series a standard are FK type for frame 90/100 and F type for 112/160.  For upper frames the brake may change in relation upon client request.


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