page_title: Drive shaft
section_title: Vehicles
hierarchical_section_title: Drive shaft / Automotive drive shaft / Vehicles
caption_attribution_description: propeller shaft on a truck
context_page_description: A drive shaft, driveshaft, driving shaft, tailshaft, propeller shaft, or Cardan shaft is a mechanical component for transmitting torque and rotation, usually used to connect other components of a drive train that cannot be connected directly because of distance or the need to allow for relative movement between them.
  As torque carriers, drive shafts are subject to torsion and shear stress, equivalent to the difference between the input torque and the load. They must therefore be strong enough to bear the stress, while avoiding too much additional weight as that would in turn increase their inertia.
  To allow for variations in the alignment and distance between the driving and driven components, drive shafts frequently incorporate one or more universal joints, jaw couplings, or rag joints, and sometimes a splined joint or prismatic joint.
context_section_description: An automobile may use a longitudinal shaft to deliver power from an engine/transmission to the other end of the vehicle before it goes to the wheels.  A pair of short drive shafts is commonly used to send power from a central differential, transmission, or transaxle to the wheels.
caption: A truck two section propeller shaft
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