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

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.

MagnaShear Diagram


Manual Release

manual releaseDesigned 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 IndicatorMagnaShear 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 QuillMagnaShear 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 shaftMagnaShear 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 TransformersMagnaShear Voltage Step Down Transformer

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

Marine DutyMarine 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.

A Few Industries We Support

Available for Marine, Washdown and Hazardous Duty and Low Temperature Applications

The Ideal Upgrade for Winches, Cranes, Loaders, Trippers, and Palletizers

Oil Shear Technology – No Adjustment No Maintenance

Designed with Oil Shear Technology the MagnaShear Motor Brakes typically mount to the back of a brake motor. They are designed to be a stopping brake, not just a holding brake.

Oil Shear Technology, perfected over 50 years by Force Control Industries, allows the brake to dynamically slip to a stop without wearing friction material, and the fluid circulating through the brake friction stack transfers the heat of engagement to the housing to be cooled. This allows the brake to operate at a consistent torque for many years without adjustment, or maintenance.

They can survive the harsh environments of mining, manufacturing, material handling as well as packaging and food processing with minimal maintenance and no adjustment. The totally enclosed rugged housings keep dirt and moisture out while reducing noise and extracting heat.

Dry friction brakes are typically designed as holding brakes. Using them for dynamic stopping wears friction material away causing constant adjustment and frequent replacement of discs, pads, or shoes.