Magnetic Particle Brakes
Placid magnetic particle brakes, also called powder brakes and mag particle brakes, provide smooth and repeatable torque control. Torque is proportional to input current, and independent of shaft speed, thereby allowing for precise control. These self-contained magnetic particle brakes are ideal for tension control, load simulation, and soft starts and stops. Some large units are available with fan or pneumatic cooling. Torque rating from 1 oz.-in to 300 lb.-ft.
Popular Applications: providing adjustable slip torque for unwinding rolls of film, fabric, and wire; applying a variable torque load for testing motors and mechanisms; and for adjustable soft stops.
Hysteresis Brakes: Hysteresis brakes are used for torque and tension control where exceptionally smooth torque is required. Torque is proportional to input current, and independent or RPM. Torque is frictionless - torque is produced across an air gap, so life is exceptionally long even at high RPM, torque is extremely accurate and smooth, even at very low RPM. All models except H3 have the Cog-Buster which keeps slip torque smooth. Torque rating from 2.5 to 250 oz.-inches.
Popular Applications: providing adjustable slip torque for unwinding rolls of film, fabric, and wire, and also for applying variable torque load for testing small motors and mechanisms.
Replacement Magnetic Particle Brakes
Placid Industries makes many custom brakes that specialty machinery manufacturers have used for decades. Browse the available models to find the one for your machine. Contact sales if you need further assistance.