schrägverzahnung

Schrägverzahnung, also known as helical gearing, is a type of gear where the teeth are cut at an angle to the axis of the gear. This angle, called the helix angle, causes the teeth to engage gradually and smoothly. In contrast, spur gears have teeth that are parallel to the axis, resulting in a more abrupt engagement.

The gradual engagement of schrägverzahnung teeth offers several advantages. It leads to quieter operation and reduced vibration compared to spur gears, making them suitable for applications where noise reduction is important. The increased contact area between the teeth also allows for higher load-carrying capacity and smoother power transmission. This can result in a longer lifespan for the gears under heavy loads.

However, the angled teeth of schrägverzahnung also create an axial thrust force. This force must be accommodated by the bearing system supporting the gears. This is a key difference from spur gears, which do not generate significant axial thrust. Schrägverzahnung is commonly used in automotive transmissions, industrial machinery, and other applications requiring smooth and quiet operation, especially under high loads. The direction of the helix angle on mating gears must be opposite to counteract the axial thrust and prevent the gears from pushing apart.