Clutch Brakes Designed for Harsh Environments

Force Control Industries (Fairfield, OH) announced its Fan Cooled Posidyne clutch brakes which allow rapid and precise stopping, starting, speed change and positioning even in harsh environments. Oil Shear technology transmits torque through lubricated surfaces so there is no wear and no heat build-up so the clutch brakes require no maintenance or adjustment.

Fan cooling provides as much as 4.5 times the cooling capacity of non-fan models. The addition of a fan is recommended for applications where the input shaft rotates at high speed (1800 or 1200 rpm). Elevated ambient temperatures will impact the radiation cooling effect. If additional cooling is required, options available include liquid cooling, external cooling packages and forced lube cooling. Fan Cooled Posidyne clutch brakes allow cycle rates of up to 300 cycles per minute. They are ideal for applications with frequent start-stop cycles. Faster production rates and significantly longer service life yields increased uptime, productivity and ROI.

Posidyne clutch brakes are field proven in diverse applications such as packaging lines, food and chemical processing facilities, lumber mills, shingle plants, fiberglass insulation production, metalworking and more. The Posidyne clutch brakes are designed with low inertia cycling components which requires less motor horsepower to accelerate the load and less torque to stop the load. 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. An actuation system allows torque in the clutch and brake to be precisely controlled. 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 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.