Maintenance Free Motor Brakes for Conveyors with Frequent Start/Stops

The MagnaShear™ motor brake from Force Control Industries, Inc. (Fairfield, OH) employs oil shear technology for longer service life, even in demanding applications like the frequent start/stop cycles seen on conveyors, or for critical holding applications like bulk conveyor loads. Its proven oil shear technology transmits torque between lubricated surfaces, eliminating wear on friction surfaces and providing a smooth “cushioned” stop that reduces shock to the drive system, further extending service life of downstream components. Unlike dry brakes, oil shear technology includes a layer of automatic transmission fluid between the brake disc and the drive plate. As the fluid is compressed, the fluid molecules shear and impart torque to the other side, causing the rotating surface to decelerate to a stop. Since most of the work is done by the fluid particles in shear, wear is virtually eliminated. Elimination of wear also eliminates the need for adjustments which are common for dry braking systems.

The patented fluid recirculation system in the MagnaShear brake dissipates heat, eliminating heat build-up that is the most common problem in dry braking systems. Elimination of the wear significantly increases service life and virtually eliminates adjustment, which also elongates maintenance intervals and makes this technology ideal for loader/unloader conveyors, rail car spotters and dumpers, ship and rail car loading conveyors, trippers and pallet return conveyors, as well as cranes, hoists, lifts and more. The totally enclosed MagnaShear brakes are impervious to moisture, dirt and dust that is common in concrete block plants as well as asphalt shingle manufacturing, coal, bulk materials handling, forest products manufacturing, and more. Along with heat removal and torque transmission, the fluid serves to continually lubricate all components of the oil shear brake, elongating their service life.

These proven motor brakes are available to accommodate a wide range of applications. Spring set torque ratings from 3 ft-lb to 1,250 ft-lb are available. The brakes can be sized to the correct torque independent of the motor frame size or horsepower. They feature “quick mount” features for quick and easy mounting to drive motors in NEMA frame sizes 56 to 449 and are shipped ready to install, with no assembly or adjustments required. They are also available pre-mounted on a motor for severe duty applications.

Force Control Industries, Inc., 3660 Dixie Highway, Fairfield, OH 45014, 513-868-0900, sales@forcecontrol.com, www.forcecontrol.com.