Posidyne Long Coupled C-Face Clutch Brakes Help Reduce Motor Damage

Sept. 1, 2016

Posidyne long coupled C-Face clutch brakes eliminate damage to keyways and motor shafts in high cycle (50 to 300 CPM) applications.

When indexing with a clutch brake, each clutch engagement transfers a torque spike to the connection between the motor shaft and the input shaft of the clutch brake. High-cycle applications can cause continuous, severe, hammering on the shaft connection of the motor to the clutch brake.

Posidyne clutch brakes feature oil shear technology that allows rapid and precise stopping, starting, reversing, speed change, and positioning – all without adjustment and virtually no maintenance. Ideal for applications with frequent start/stop cycles, these unique motion control devices allow higher cycle rates (as high as 300 cycles per minute), and increased production rates, all while reducing downtime.  Higher production rates coupled with significantly longer service life than traditional (dry) clutch/brakes (5 to 10 times longer in many cases) yield increased uptime and improved productivity. No adjustment, virtually no maintenance, multi-year service life, minimal parts inventory, rand educed parts and replacement ordering costs, add up to higher production at significantly lower maintenance costs.

Designed with low inertia cycling components makes the Posidyne clutch brake more efficient, requiring less motor horsepower to accelerate the load, and less torque to stop the load. Their totally enclosed design is impervious to dust, chips, chemicals, coolants, caustic wash down, weather, and more, making them ideal for hostile environments. They are field-proven in diverse applications such as lumber mills, shingle plants, fiberglass insulation production, food processing, packaging, metalworking, and more.

Posidyne clutch/brakes feature a multiple-disc design that produces high torque from a small package.  Re-circulating the fluid dissipates the heat of engagement, which is a common cause of downtime with other clutch/brake assemblies.

A simple actuation system allows torque in the clutch and brake to be precisely controlled.  Adjustment for rapid or soft starts and stops is easily accomplished. Manifold-mounted control valves reduce response times by eliminating hoses and fittings and are recommended for high-cycle applications. By reducing the high starting inrush currents and the associated power factor imbalance in the motor these unique clutch/brakes can also reduce energy costs.

The Posidyne clutch brake can be actuated by air or hydraulic pressure for use in a plant or outside remote applications. The hydraulic actuation package includes a hydraulic pump, solenoid valve, regulators, and a filter. A heat exchanger can be added for additional cooling.

The Posidyne is inherently explosion-proof with the addition of an explosion-proof actuation valve, or locating the valve in an explosion-proof cabinet. Multiple sizes are available to suit particular applications from ½ to 350 HP (99 Lb. In. to 79,000 Lb. In.) with cooling options, control logic, and mounting arrangements to simplify and speed installation.

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