Gear tooth geometry is determined primarily by pitch, depth, and pressure angle. Gear tooth geometry is determined primarily by pitch, depth, and pressure angle. Pitch: Standard pitches are ...

Pitting commonly appears on operating surfaces of gear teeth. A fundamental cause is excessive loading that raised contact stresses beyond critical levels. Pitting chips first appear on the ...

All images courtesy of Malcom Burrows To the best of our knowledge, the mechanical gear—evenly-sized teeth cut into two different rotating surfaces to lock them together as they turn—was ...