30/04/2026
BELLOWS - A VERSATILE ALLY 🔰🏎🏭
Rubber bellows play a critical role in automotive, oil & gas, medical and industrial systems — from expansion joints and actuators to protective gaiters that absorb movement, isolate vibration, and seal components.
HOW IT'S MADE - MOLD-MAKING CHALLANGES
For mold makers, machining main steel plates and male inserts for high-quality, large-scale bellows production requires, other than utmost care to design, strict control of tolerances, choice of the right hardened tool steels, lots of machining technologies, such as:
- precision CNC finishing,
- surface polishing and stress‑relief to avoid distortion;
- EDM and electrode strategy for, e.g., undercuts
- Assembly alignment to determine tool life and part performance.
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