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Electromagnetic Power Off & Power On Brakes

Servo2Go supplies electromagnetic power off & power on brakes from Inertia Dynamics, including FB, MPC, and other types. Learn more about each type of electromagnetic brake or browse our products below.

What is an Electromagnetic Brake?

Electromagnetic brakes, or EM brakes, serve a crucial role in managing and controlling motion in a multitude of applications across various industries. By employing the principles of electromagnetism, they effectively convert electrical energy into mechanical energy, providing precise and efficient control over the movement of machinery. There are two primary types of EM brakes: power-off brakes and power-on brakes. Both types leverage the power of electromagnetic force, albeit in different ways and for different purposes.

Power-off EM brakes, also known as fail-safe brakes, spring into action when the power supply is interrupted, either intentionally or due to a fault. In such situations, these brakes engage automatically, halting or holding the load in place. This feature is a crucial safety measure, designed to prevent the machinery from moving uncontrollably in the event of a power failure, thus averting potential accidents and damage to the equipment.

Power-on EM brakes, on the other hand, work in exactly the opposite way. They activate when power is applied, bringing a rotating load to a stop. They offer precise control over the motion and speed of the machinery, allowing it to stop efficiently whenever necessary. These brakes are typically used in applications where quick and frequent starts and stops are required.

In both types of EM brakes, the key principle is the use of electromagnetic force to create mechanical resistance or friction. This slows down or stops the motion of the machinery, providing a reliable and effective solution for motion management in a wide range of industrial applications. As such, EM brakes are an indispensable component in many areas, from manufacturing and processing to transportation and beyond. They find applications in industries such as automation, military, medical, food processing, and packaging.

You can view our selection of electromagnetic brakes below!

Electromagnetic Brakes by Series

Flange Mounted Spring Applied Brakes

Inertia Dynamics type FSB brakes are designed to decelerate or hold inertial loads when the voltage is turned off. These brakes can be mounted to a bulkhead or motor.

Flange Mounted Spring Applied Brakes

Brake Only Module (Power-Off) with Output Shaft C-Face

The MPC is a power-off brake module with an output shaft. The unit mounts on a C-Face motor and the output can be coupled to a C-Face gear reducer. Ideal for creating brake motor packages on smaller servo and stepper frame motors.

Brake Only Module (Power-Off) with Output Shaft

Spring Applied Brakes

Inertia Dynamics features a type SAB spring applied brake. SAB brakes are designed to be engaged and disengaged in a static condition at zero RPM. They are best used as a parking brake to hold a load in position. These brakes can be mounted to a flange or motor using thru-holes or tapped holes in the field cup. A conduit box is optional. SAB brakes have been used extensively for servo brake applications. High temperature coil insulations are available upon request.

Spring Applied Brakes

Manual Release, Spring Applied Brakes

Inertia Dynamics features a type FSBR015 spring applied brake with a manual release lever. The brake incorporates a lever which is rotated to mechanically engage the clapper plate. The clapper plate acts against the compression springs and allows the armature disc to spin freely. The brake is now free of torque. An optional microswitch is activated on the field assembly to disconnect power to your system in case of an accidental start-up with the brake manually released. To return the brake to normal operation, rotate the lever to re-engage the brake and produce torque.

Manual Release, Spring Applied Brakes

Reverse Mounted Spring Applied Brakes

Inertia Dynamics type FSBR brakes are designed for applications requiring minimum space (short axial length) or on motors with short shaft extensions. When mounted, the armature hub is installed on the shaft first, then the brake is installed over the hub and attached to the motor.

Reverse Mounted Spring Applied Brakes

Flange Mounted Brakes

FB series power-on brakes are used to stop or hold a load that is coupled to the armature hub assembly. The armature hub is attached to the load shaft. The field assembly is mounted to a bulkhead that is perpendicular to the shaft.

Flange Mounted Brakes

Shaft Mounted Clutches/Power-On Brakes

Type SLB and SOB

The SLB and SOB series are shaft-mounted Clutch/Power-On Brake packages that are used to couple two parallel or in line shafts. The Clutch/Brake package combines the features of our model SL or SO with an FB into one unit for easy installation. The clutch armature hub accommodates a pulley, gear, sprocket, etc., to transmit torque to the second shaft. The brake is used to stop or hold the load. The Clutch/Brake package is shaft mounted and retained by a loose-fitting pin or bracket through the anti-rotation tab.

Shaft Mounted Clutches/Power-On Brakes

C-Face, Power-Off Brakes

Inertia Dynamics' Single C-Face Power-Off Brakes are designed to decelerate or hold inertia loads when the power is turned off. The single C-Face mounts on the fan or non-driven end of a motor. Brakes are available from 3 lb.-ft. to 15 lb.-ft.

c-face brakes from inertia dynamics

C-Face, Power-Off Brakes with Heavy-Duty Enclosures

Our Single C-Face Power-Off Brake is also available with cast iron housing for applications involving corrosive environments. The heavy-duty housing also includes o-ring seals to create a dust-tight brake. Brakes are available from 3 lb.-ft. to 15 lb.-ft.

C-Face Heavy Duty Brakes from Inertia Dynamics

Double C-Face, Power-Off Brakes

The Double C-Face Brake is designed for use as a coupler between standard C-Face motors and C-Face gear reducers. An optional foot mount kit is also available with this unit.

Double C-Face Brakes from Inertia Dynamics

Electromagnetic Brake Products