The digital revolution has transformed the stamping industry with the introduction of NC servo feeders. These innovative feeders offer a wealth of benefits, including user-friendly operation, precise feeding, broad applicability, and enhanced stability and safety. As a result, NC servo feeders have outperformed roller feeders in the market, becoming the go-to choice for punch press feeding equipment.

To cater to diverse working environments and processing equipment, NC servo feeders are available in two models: pneumatic and mechanical. Despite sharing common principles and price points, there are key differences between them. This guide aims to help first-time buyers make an informed decision when choosing between pneumatic and mechanical NC servo feeders.

Understanding the Structure of NC Servo Feeder Models

It’s crucial to grasp the structure of both pneumatic and mechanical NC servo feeders to make the right choice. Both models utilize Mitsubishi PLC control, Mitsubishi servo motors, and drivers, ensuring accurate feeding through synchronous belt pulleys. The primary distinction between the two lies in their release mechanisms:

  1. Pneumatic NC Servo Feeders employ a cam-electromagnetic valve-cylinder push-pull relaxation method. They require an external air source and offer unrestricted installation options. However, their relaxation speed is slower compared to their mechanical counterparts.
  2. Mechanical NC Servo Feeders use a rod-type relaxation device, with a relaxation shaft pressing down on the upper roller (similar to high-speed roller feeders). This design provides faster relaxation speeds without the need for an external air source, but with limited installation options.

Identifying the Right NC Servo Feeder for Your Application

The structural differences between pneumatic and mechanical NC servo feeders determine their unique applications:

  • Pneumatic NC Servo Feeders are the standard models, compatible with various types of punch presses, shearing machines, hydraulic presses, forming machines, and laser cutting equipment for feeding operations. However, they exhibit slower overall feeding speeds, making them unsuitable for high-speed punch presses.
  • Mechanical NC Servo Feeders are optional models, offering faster feeding speeds and easier installation. They are particularly well-suited for high-speed and traditional punch presses.

In general, high-speed and traditional punch presses prefer mechanical NC servo feeders, while other machines opt for pneumatic NC servo feeders. For personalized guidance on purchasing decisions, we encourage direct communication with our team of experts.


NC servo feeders have revolutionized the stamping industry by offering unparalleled precision, ease of use, and adaptability. When selecting between pneumatic and mechanical NC servo feeders, understanding their structural differences and intended applications is vital. While pneumatic feeders cater to a broader range of machines, mechanical feeders are specifically tailored for high-speed and traditional punch presses. As always, consulting with professionals will help ensure you make the best choice for your unique needs.

servo feeder
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