Force Control Industries offers its Size 30 Posidyne clutch brake with oil shear technology that can be operated as a clutch only for applications such as pumps or fans or as a clutch brake for cycling or indexing applications.
"This Posidyne clutch brake dynamically accelerates or decelerates high inertia loads without wear on friction discs, providing years of maintenance-free, no-downtime operation," said a company spokesperson. "This is in contrast to dry friction clutches or brakes that are designed to lock up and tend to have significant wear if used dynamically. The Size 30 features smooth and quiet acceleration or deceleration due to the oil shear technology. It is ideal for bulk materials handling applications such as use on conveyors and load-out conveyors, or bulk loading applications like rail car dumpers, portside conveyors and other critical no-downtime applications."
Actuation media to move the piston creating pressure on the clutch or brake can be air (maximum 80 PSI) or hydraulic pressure for applications outside or not near a compressed air supply.
"The Posidyne Size 30 features a totally enclosed, heavy-duty, foot mounted, cast iron sealed housing for operation in harsh environments," said the spokesperson. "It functions with no regular maintenance intervention (annual fluid changes are suggested for maximum service life).
"The multiple disc friction stacks provide high torque and thermal capacity in a low inertia compact package. Highly developed friction materials function optimally with the transmission fluid and resist wear. Teflon liners protect every piston o-ring seal to eliminate cracking and leaking and provide smoother engagement. Because there is virtually no wear of the friction material, piston travel is reduced, utilizing less actuation air or hydraulic fluid and providing a quicker response.
"Oil shear technology is the heart of all Force Control clutches and brakes. Transmission fluid flowing through the friction stack is put in a shear condition during dynamic engagement. It transmits torque between the friction discs and drive plates, protecting the parts from mechanical contact and absorbing the heat of engagement as it flows through the stack. Upon exiting the stack it flows down the housing walls where it is cooled and back into the bottom of the unit to re-circulate back into the friction area. As the pressure continues to clamp the friction stack together it reaches a point of static lock up unless continuous slip is a desired condition.
"The transmission fluid also serves to lubricate the bearings and splines for improved operating life. Depending on the thermal loads, the additional cooling of the transmission fluid can be done with fan cooling, water cooling, external oil-to-air cooling or oil-to-water cooling. For continuous slip applications, forced lube units are available."
For more information contact:
Force Control Industries, Inc.
3660 Dixie Highway
Fairfield, OH 45014
513-868-0900
sales@forcecontrol.com
www.forcecontrol.com