Because of the angled teeth, contact begins at one end of the tooth and smoothly spreads across the face as it rotates.High Torque Capacity: Multiple teeth are engaged at the same time, distributing the load more evenly and reducing the risk of tooth breakage.Axial Thrust: The angled teeth generate a side-loading force called axial thrust. This means machinery using helical gears must utilize specialized thrust bearings or washers to handle this force.Orientation: They can connect parallel shafts (most common) or non-parallel/perpendicular shafts (known as crossed helical gears).