MagnaShear Electric Motor Brake

  • Torque: 6 LB-FT to 1,250 LB-FT
  • Fits NEMA Frame 56C to 440 Motor Frames.
  • Spring Set – Electric Release (Fail-safe)
  • IEC and Custom Mounting Available
  • Clamped-Split-Quill
  • Washdown, Marine and Hazardous Duty
  • Manual Release, lock out, and released indicator available
  • Can also be furnished as an Assembled Brake Motor

Long Life – 5 to 10 Times Longer Life

Severe Duty – Hazardous Duty

No Adjustment – No Maintenance

Features of a MagnaShear Brake

  • Spring set, electrically released – 115 VAC or 230 VAC through pulse width modulation for reduced heat and energy.
  • Direct acting coil eliminates small linkage parts to corrode, hang up, or fail.
  • Multiple disc design for high thermal capacity and up to 80% lower rotating inertia.
  • Oil Shear Technology for smooth accurate stops, minimal wear, no adjustment and superior heat dissipation.
  • Up to 10 times longer life, Up to 50% Lower Cost per Index
  • Heavy duty totally enclosed sealed housing for protection in severe dusty, dirty, or wet applications.
  • Clamped split quill provides superior 360º shaft connection, minimizing key and key-way problems.
  • Quick mount design installs in one piece.
  • Washdown, Marine and Hazardous duty options available.
  • Custom flange designs for IEC, reducer mounting, or old crane retrofits.
  • Manual release, release indicator switch, heater and encoder shaft accessories available.
  • Simple transformers used for alternate voltages.


Manual Release

Designed to allow manual release of the brake when power is off. This allows movement of the machine for maintenance purposes while the power is locked out.

Manual Release Indicator

indicates that the brake has been manually released. This is used as a safety precaution to indicate when the brake is no longer holding the load.

Splined Quill

Especially when doing a retrofit on a crane a splined shaft is often used and requires a splined quill. Force Control Industries can make splined quills with a drawing or by making a mold of the existing spline.

Stub Shaft

There are times when an encoder is required especially with VFD drives. The optional shaft extension out the back of the brake is ideal for mounting an encoder.

Voltage Step down Transformers

required if brake control power is not 115 VAC. Many voltages can be used such as 240, 480, 390, 575, and DC.

Marine Duty

Similar to washdown this option is for use on boats, barges offshore rigs, or waterfront loading facilities and ports exposed to fresh or salt water.