af afsnit | apr 28, 2026 | Orm og ormehjul
Worm and Worm Wheel Pair Matching — Why Mix and Match Fails A worm and worm wheel are sold as a pair for a reason. Buying the worm from one supplier and the wheel from another saves nothing — the contact pattern collapses to 25 percent and the unit fails at 4 months....
af afsnit | apr 28, 2026 | Orm og ormehjul
Worm Gear Strength Calculation — DIN 3996, ISO 14521, AGMA 6034 From application torque to gear pair life — three standards, five failure modes, one number that decides whether the worm gear pair will run for 5 years or 25. Knowing which standard applies and why is...
af afsnit | apr 28, 2026 | Orm og ormehjul
Worm Gear Surface Finish — Why Smoothness Decides Service Life Run a fingernail across the worm thread — you can feel the difference between Ra 1.6 hobbed and Ra 0.4 ground. Surface finish is the friction language of every worm gear pair, and one process step can...
af afsnit | apr 28, 2026 | Orm og ormehjul
Worm Gear Contact Pattern — How Bluing Tests Reveal Quality A 60 to 80 percent contact band centred on the wheel tooth flank — read the bluing test like an X-ray of pair quality. Five minutes of marking compound and a turn of the worm tells you everything about...
af afsnit | apr 28, 2026 | Orm og ormehjul
Worm Gear Module — Choosing the Right Tooth Size for Torque What module do I need for 500 N·m output? The module is the dimensioning DNA of every worm gear pair — and the answer follows a rigorous reverse calculation that takes about 10 minutes when done correctly....
