CHAIN SAW NAMES AND TERMS
•Bucking - The process of cross cutting a felled tree or log into lengths.
•Chain Brake - A device used to stop the chain saw.
•Chain Saw Powerhead - A chain saw without the saw chain and guide bar.
•Clutch - A mechanism for connecting and disconnecting a driven member to and from a rotating source of power.
•Drive Sprocket or Sprocket - The toothed part that drives the saw chain.
•Felling - The process of cutting down a tree.
•Felling Back Cut - The final cut in a tree felling operation made on the opposite side of the tree from the notching cut.
•Guide Bar - A solid railed structure that supports and guides the saw chain.
•Kickback - The backward or upward motion, or both of the guide bar occurring when the saw chain near the nose of the top area of the guide bar contacts any object such as a log or branch, or when the wood closes in and pinches the saw chain in the cut.
•Kickback, Pinch - The rapid pushback of the saw which can occur when the wood closes in and pinches the moving saw chain in the cut along the top of the guide bar.
•Kickback, Rotational - The rapid upward and backward motion of the saw which can occur when the moving saw chain near the upper portion of the tip of the guide bar contacts an object, such as a log or branch.
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•Normal Cutting Position - Those positions assumed in performing the bucking and felling cuts.
•Reduced Kickback Guide Bar - A guide bar which has been demonstrated to reduce kickback significantly.
•Replacement Saw Chain - A chain that complies with kickback performance requirements of ANSI
•Saw Chain - A loop of chain having cutting teeth, that cut the wood and that is driven by the motor and is supported by the guide bar.
•Switch - A device that when operated will complete or interrupt an electrical power circuit to the motor of the chain saw.
•Switch Linkage - The mechanism that transmits motion from a trigger to the switch.
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