Helical Gears

Helical gears produce less noise and vibration than spur gears. They feature helicoid teeth, over which the load is distributed over several teeth – greatly reducing wear on the gearing mechanism. Teeth meshing causes thrust loads that need to be absorbed by thrust bearings to maintain gear alignment. The axial thrust is generally a negative, but helical gears are commonly used in industry. Helical rack gears are linear-shaped variations that mesh with the rotating helical gear. Another variant is a double helical gear. These are used to balance the thrust forces that are exerted and to provide an additional area of gear shear. Helical gears are useful in high speed applications. Not only do they provide smoother and quieter operation than spur gears, helical gears are also capable of handling heavier loads.

  • Lister Engineering

  • J.R. GILBERT ENGINEERING LIMITED