When utilizing a press feeder alongside a punching machine, it’s crucial to adjust and reset the feeder each time a new die is used. This ensures the feeder accommodates the specific stamping process and the dimensions of the material. Adjusting the press feeder is essential for maintaining operational efficiency and product quality.

How to Properly Adjust a Press Feeder

Various types of press feeders exist, including roller feeders, NC servo feeders, clip feeders, and air feeders. Despite these differences, the adjustment process remains largely consistent. Here, we will detail the adjustment methods using an NC servo feeder as an example.

1. Adjusting the Feeding Height

The feeding height of the press feeder must be adjusted to align with the height of the lower die after switching dies. This step is critical for accurate material handling and stamping.

Adjustment Method:

  • Begin by loosening the M12 hex screws on the press feeder’s mounting plate.
  • Next, loosen the nut on the M16 feeding height adjustment screw at the bottom of the press feeder.
  • Adjust the screw to modify the feeding height: turning clockwise raises the feeder’s horizontal position, while turning counterclockwise lowers it.
  • Once the desired height is achieved, tighten the M12 hex screws on the mounting plate to secure the setting.

2. Adjusting the Pressing Air Pressure

This step is not required for roller feeders but is necessary for other types. Adjust the pressing air pressure based on the material’s thickness and type. The goal is to ensure the material does not slip between the feeding rollers without applying excessive pressure.

3. Adjusting the Material Stop Wheel Width

Proper positioning of the stop wheels is vital for effective material stopping and positioning. Adjust these according to the material’s width, ensuring a gap of no more than 5mm between the material and the stop wheels on both sides.

4. Adjusting the Feeding Time

Feeding time must be adjusted to align with the stamping process requirements. This involves setting the start signal time for feeding on the press cam.

Note: The method for setting the press cam signal varies between mechanical cams and electronic cams.

5. Adjusting the Release Time

The release signal on the press cam must be adjusted according to the stamping process requirements. Here’s how to do it:

  • Install the die on the punching machine.
  • Operate the press in inching mode.
  • When the die’s locating pin enters the guide hole, stop the press.
  • Adjust the cam signal to provide the release signal.


Proper adjustment of your press feeder is essential for optimizing performance and ensuring high-quality output. By following these detailed steps, you can maintain precise control over your stamping process, accommodate different materials and dies, and ultimately enhance your production efficiency. Whether using an NC servo feeder or another type, these guidelines will help you achieve optimal results.

Press Feeder
Press Feeder