Gearboxes
Helical Gearing
Gear tooth form with angled teeth that provides quieter, lower-noise operation, higher load capacity, and smoother tooth flank engagement compared to straight (spur) gearing.
Definition
| Feature | Spur Gearing | Helical Gearing |
|---|---|---|
| Running Smoothness | Medium | High |
| Load Capacity | Standard | Up to +30% |
| Axial Force | None | Present (must be supported) |
Practical Relevance
In planetary gearboxes and bevel gearboxes of high power classes, helical gearing is standard. When selecting helically geared transmissions, the output shaft bearing must be designed for the resulting axial force. The helix angle influences load capacity, axial force, and noise emission of the gearbox.