How to Replace a Membrane Press Pin? Maintenance and Spare Parts Guide

In membrane presses, the pin and the plate are critical parts that directly affect pressing quality. Worn pins lead to surface defects, leakage, and loss of efficiency. In this guide, we summarize when to replace them and how to select the right spare part.

Signs that a pin needs to be replaced

• Surface marks in the pressing and uneven pressure distribution.
• Visible wear, corrosion, or deformation on the pins.
• Pins seating with difficulty or sitting loose during line changes.
• Increasing downtime and scrap rates.

The replacement process (summary)

• The press is safely stopped and the plate is cleaned.
• Worn pins are removed and the plate and seats are inspected.
• New pins/plate compatible with the original are installed.
• Alignment and a test pressing are carried out for verification.

Selecting the right spare part

The material, hardness, and dimensional tolerance of the replacement pin must match the original. AYYILDIZ ROBOTICS manufactures original-quality, cost-effective pins and plates for membrane presses, primarily Bürkle and Wemhöner, and provides on-site replacement/service when needed.

You can get a fast quote by letting us know the brand and model of your press.