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Posted July 7, 2024

MagnaShear Motor Brakes for harsh environments

Force Control Industries' MagnaShear motor brakes are totally enclosed and impervious to the elements, making them ideal for use in harsh environments like high heat, humidity, caustic washdown, dirt, dust, moisture, and more.


MagnaShear Brakes for Harsh Environments

Because they are maintenance-free and require no adjustment, they are ideal for continuous process applications or critical pathway manufacturing. Their unique design virtually eliminates motor brake downtime and associated maintenance costs; the resulting increase in production time can bolster productivity, efficiency, and profitability for manufacturing plants of all types. MagnaShear® motor brakes feature “quick mount” features for fast and easy mounting to drive motors in NEMA frame sizes 56 to 449, making them suitable for a wide range of industries and applications including conveyors, crane and hoist brakes, and other material handling equipment, especially in foundries and other hostile environments.

MagnaShear motor brakes employ oil shear technology which results in significantly longer service life in demanding applications like those with frequent start/stop cycles or where the motor is reversed each cycle. This longevity eliminates the need to stock spare brakes, friction discs, and other repair components, freeing up maintenance budgets and shelf space.

The totally enclosed MagnaShear with oil shear technology provide a smooth, “cushioned” stop which reduces shock to the drive system, thus extending service life of downstream components.

How Oil Shear Works

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 – thus imparting torque to the other side. This torque transmission causes the rotating discs to decelerate against the stationary plates bringing them down to 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.

In addition to transmitting torque, a patented fluid recirculation system helps to dissipate heat which is the major problem with traditional dry brakes. Along with heat removal and torque transmission, the fluid serves to continually lubricate all components of the oil shear brake, elongating their service life. MagnaShear® brakes with oil shear technology provide significantly longer service life, characterized by virtually maintenance-free operations.

With no adjustment or maintenance required, save for an annual oil change, these dependable motor brakes allow maintenance personnel to be tasked with other projects, thus allowing facilities to accomplish more work with fewer employees.

Suitable for a Wide Range of Motor Sizes

These proven motor brakes are available to accommodate a wide range of applications. Spring set torque ratings from 3 to 1250 foot-pounds are available. MagnaShear® motor brakes are available in multiple torques for the same motor frame.

MagnaShear motor brakes for motors in NEMA frame sizes 56 to 449 are shipped ready to install, with no assembly or adjustments required. They are also available pre-mounted on a motor for severe duty applications. MagnaShear motor brakes can be furnished to fit a NEMA or IEC frame motor, as a complete motor and brake assembly, or to mount on a machine frame or other special mounting configuration.

These proven motor brakes are totally enclosed from outside contaminants, with seal integrity for harsh and washdown environments. A modular design /assembly allows for ease of servicing and maintenance.

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