What type of gear will experience more sliding action compared to other gear types?

Hypoid gears are designed in such a way that their axes are not parallel, which contributes to the sliding action between the tooth surfaces during operation. This design allows for smoother engagement of the teeth, leading to a more gradual transfer of motion and load. The sliding contact is more pronounced due to the axial offset, which differentiates hypoid gears from other types.

In contrast, spur gears have teeth that are aligned parallel to the axis of rotation, causing primarily rolling action with minimal sliding. Bevel gears, while they also have an angled tooth design, typically experience less sliding action than hypoid gears because their axes meet at a point, allowing for more direct engagement. Helical gears do experience some sliding action due to their angled teeth, but again, this is less than that of hypoid gears. Hypoid gears are specifically engineered for applications requiring high torque and smooth operation, making their sliding action a crucial aspect of their functionality.