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The YouYi Automation Products Center
All of YouYi's press automation solutions in one place.
Servo Feeders: Mechanical Relaxation vs Pneumatic Relaxation
August 30, 2025
When selecting a servo feeder, manufacturers often face the dilemma of choosing between mechanical and pneumatic relaxation systems. Both types have distinct advantages and disadvantages, affecting their performance and suitability for different applications. Let's break down the key differences between mechanical relaxation and pneumatic relaxation in servo feeders to help you make an informed choice.
The primary distinction between mechanical servo feeder and pneumatic servo feeder lies in the relaxation method. The mechanical NC feeder uses a mechanical rod to release tension (requiring the installation of a release rod on the press slide). This method is fast, prevents material damage, and is easy to adjust. When trial molding or refeeding the material, simply adjusting the release screw to contact the bearing allows the material to loosen. This makes operation simple and efficient.
The pneumatic servo feeder, on the other hand, does not require additional components to be added to the press. This makes installation straightforward, as it can be used with virtually any press machine and is compatible with shearing machines or other equipment for feeding operations. However, pneumatic relaxation is slower compared to mechanical systems, making it less suitable for high-speed feeding operations with short stroke distances.
The mechanical servo feeder requires the installation of a mechanical release rod on the slide, which is unsuitable for gantry presses or shearing machines. Despite this limitation, the mechanical relaxation system offers a rapid response, making it ideal for high-speed feeding operations with short strokes. It also provides better stability and easier operation compared to pneumatic systems.
When purchasing a servo feeder, it is essential to consider the features of the press and the nature of your production. Pneumatic feeders are ideal for applications where installation flexibility is crucial, while mechanical feeders excel in high-speed, short stroke feeding operations.
Manufacturers should choose between mechanical or pneumatic relaxation based on their production requirements and operational habits.
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