Application

Piston Return Springs
Disc spring are used to ensure that hydraulically actuated piston must returns to the original position once the coupling load is released. Tolerances and wear on the coupling components are compensated by horizontal characteristic of the load curve in the working range of the disc spring. This results in consistent shift quality.


Field of application

• Manufacturers of hydraulic actuated cylinders, actuators for industrial and chemical facilities, heating and cooling facilities

Valves
In quick-action stop valves, disc spring stack is under hydraulic preload in the open position. If a failure occurs, the hydraulic pressure drops, releasing the spring stack and closing the valve. Ball bearing centered stacks are often used for this application. The spring stack also has a self adjusting function. The stack adjusts for the set-loss of gaskets, reducing required maintenance.


Field of application

• Control Valves Manufacturers
• Instrumentation Industries
• Power Stations
• Production Facilities

Power Station construction
Spring stacks are used for boiler suspension systems. The spring assemblies compensate for deflections of the bearing surfaces. This guarantees even movement of the boiler resulting from thermal expansion.


Field of application
Production Facilities

• Boiler Construction
• Incinerating Plants
• Desulphurisation plants

Energy Stores For Safety Systems
Disc spring stack is used as a source of mechanically stored energy. The spring stack is hydraulically compressed through system pressure when the switch is open. In the case of hydraulic pressure loss, the spring stack extends, closing the switch.


Field of application

• Manufacturers of electric control units

Overload Couplings & Slip Clutches
The disc springs are pre-loaded to achieve a certain torque through the clutch. Once the torque limitation is overcome, the ball bearings will slide out of position, causing the disc springs to be loaded further. This will discontinue the transmission of torque.


Field of application

• Manufacturers of overload and sliding clutches

Spring-Actuated Brakes
Disc springs are installed in safety brakes in the case of technical malfunction (i.e. loss of power). Braking power will then be generated through the disc springs. In addition, the disc springs will be deployed as shock absorbers in elevator cabins.


Field of application

• Manufacturers of elevators

Tool Clamping Components
The tool is released by a hydraulically operated piston, which slides forward over a bolt and clamping tube. As the spring stack is compressed, the collet opens simultaneously. The clamping of the tool is activated by the spring stack. Reduction of hydraulic pressure causes stack unloading and the tool moves into the spindle. The stack of disc springs locks the tool in a clamped position.


Field of application

• Machine Tool Manufacturers

Power Generation
In a turbine application, the generator is supported by two stacks of disc springs. These springs stacks are used to compensate for uneven loading of the generator, which is a result of the torque generated from the load input

Field of application

• Manufacturers of wind power plants

Shock Absorbers (Gas Pressure Actuated)
The disc spring serves as a spring cushion and positive stop for the working cylinder.


Field of application

• Manufacturers of shock absorbers