Wikipedia:
Hirth joint
A Hirth joint or Hirth coupling is a type of mechanical connection named after its developer Hellmuth Hirth. It is used to connect two pieces of a shaft together and is characterized by teeth that mesh together on the end faces of each half shaft. It was first used in gasoline engine crankshafts[1] and is now used jet engine shafts and Campagnolo's new "Ultra-Torque" crankset.
References
- ^ Cranks -- Center Clamp. Retrieved on 2007-04-27.
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