Types of Electromagnetic Brakes Available at SEPAC
Spring-applied or power-off brakes and magnetically-applied or power-on brakes are two distinct categories of electromagnetic brakes that differ in design and operation. With spring-applied or power-off designs, the brake is designed to be engaged when power is turned off. In this spring engaged state, the compression springs apply pressure to the armature plate, pushing it into the friction disc to prevent rotation. When power is returned to the coil, the brake disengages and the shaft can then rotate freely.
SEPAC offers the following spring-applied power-off brake designs:
- Tooth Brake (SETB) Series: Spring-applied tooth brakes use springs to force the armature’s teeth into engagement when current is removed.
- Spring Engaged Brake (SEB) Series: Standard friction brakes utilize friction discs to transmit torque upon compression, stopping or holding a load when power is off. The SEB product line can be customized based on the application and friction material can be selected for the highest performance.
- Thin Spring Engaged Brake (TSEB) Series: Our low-cost thin spring designs feature a thinner profile relative to standard spring-applied designs, giving them an excellent torque-to-size ratio.
- Ultra Thin Spring Engaged Brake (UTSEB) Series: The ultra thin brake features the thinnest profile of our power-off brakes, making it well-suited for accommodating space limitations and utilizes a PWM to step down the voltage.
- Manual Release Spring Engaged Brake (MSEB) Series: Our manual release brakes are equipped with a lever that provides a manual override in the absence of power.
In contrast to power-off brakes, magnetically-applied or power-on brakes are designed to engage when the power is turned on. In the absence of power, the armature is disengaged from the body of the magnet and can rotate freely. Release springs positioned between the armature and output plate help hold the armature in this disengaged position. When power is supplied to the coil, the armature engages with the magnet body, and the attached load can be held. SEPAC’s magnetically-applied power-on tooth brakes come in a range of sizes with various torque ratings and speed capacities.
