Making todays pneumatic cylinders work effectively

Pneumatic cylinders continue to provide a valuable and preferred option for linear actuation in many applications. To achieve these unprecedented levels of effectiveness, all portions of the cylinder design must be balanced to reach the desired performance and cost ratio.
As you can see from the cutaway cylinder, pneumatic cylinder have a large number engineered components working together. One of the critical areas of engineering required for achieving this performance is good sealing system design. To achieve the necessary sealing system effectiveness, engineers for a variety of components involved in a pneumatic cylinder need to work together to reach the right balance for each application. Looking at the output of linear actuator is a great place to start to begin to understand the factors to be balanced for an effective linear actuator.
Good linear actuator design incorporates all types of measurables of performance for the linear actuator application. While past practices are well defined for identifying typical cylinder design variables like load capacity, stroke length, positional accuracy, and cylinder useful life, today’s engineers have a wider range of actuation technologies to choose from, and an expanded range of linear actuator performance variables to optimize during the design process. Application parameters now typically include these features:

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* Acceleration and deceleration performance
* Vibration of the linear actuator load
* Impact of environment variables around the linear actuator such as thermal effects, contamination around the linear actuator, noise impact, and hardware growth or distortion
* Linear actuator repair and reuse
* End-of-life disposal requirements
* Initial and sustaining system costs
All of these factors lead to today’s cylinder designs now requiring a close examination of all components to insure that we achieve the necessary balance for proper optimization of system performance. To understand how to achieve this balance, let’s look at the role of the sealing system in cylinder function.