GB/T 18960-2023 Potable china-saws - Vocabulary
1 Scope
This document defines terms relating to the mechanical aspects of portable chain-saws, saw-chain and guide bars.
The chain-saw positions are shown in Annex A.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
3.1 Work functions
3.1.1
felling
separation of a standing tree from its root system
3.1.2
delimbing
removal of branches from trees or parts of trees
3.1.3
Bucking, slashing
cutting of felled or uprooted trees, or parts of trees, into lengths
3.1.4
splitting
dividing of trees or parts of trees longitudinally into pieces
3.1.5
boring
process of cutting with the saw-chain (3.3.1) at the nose (tip) of the guide bar (3.3.5) in order to make a hole
3.1.6
kickback
rapid upward and backward motion of the saw which can occur when the moving saw-chain (3.3.1) near the upper portion of the tip of the guide bar (3.3.5) contacts an object such as a log or branch
3.1.7
pinch kickback
rapid pushback of the chain saw that can occur when the wood closes in and pinches the moving saw-chain (3.3.1) in the cut along the top of the guide bar (3.3.5)
3.1.8
pruning
removal of live or dead branches, or of multiple leaders of shoots, from standing trees
3.2 Types of chain-saws
3.2.1
chain-saw
power-driven tool designed to cut wood with a saw-chain (3.3.1) and consisting of an integrated compact unit of handles, power source, guide bar (3.3.5) and saw-chain, designed to be supported with two hands
3.2.1.1
chain-saw for forest service
chain-saw designed for forest work such as felling (3.1.1), delimbing (3.1.2) and bucking (3.1.3)
Note: See Figure 1.
3.2.1.2
chain-saw for tree service
specialized chain-saw of limited mass, designed for use by a trained operator for pruning (3.1.8) and dismantling standing tree crowns
Note: See Figure 2.
3.3 Cutting equipment
3.3.1
saw-chain
chain serving as a cutting tool, consisting of drive links, cutters and side links held together by rivets
Note: See Figure 3 and Figure 4.
3.3.2
chain guides
plates or guides fitted on one or both sides of the guide bar (3.3.5) where the saw-chain (3.3.1) enters the groove, for assisting in guiding the saw-chain between the drive sprocket (3.3.3) and the guide bar
GB/T 18960-2023 Potable china-saws - Vocabulary
1 Scope
This document defines terms relating to the mechanical aspects of portable chain-saws, saw-chain and guide bars.
The chain-saw positions are shown in Annex A.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
3.1 Work functions
3.1.1
felling
separation of a standing tree from its root system
3.1.2
delimbing
removal of branches from trees or parts of trees
3.1.3
Bucking, slashing
cutting of felled or uprooted trees, or parts of trees, into lengths
3.1.4
splitting
dividing of trees or parts of trees longitudinally into pieces
3.1.5
boring
process of cutting with the saw-chain (3.3.1) at the nose (tip) of the guide bar (3.3.5) in order to make a hole
3.1.6
kickback
rapid upward and backward motion of the saw which can occur when the moving saw-chain (3.3.1) near the upper portion of the tip of the guide bar (3.3.5) contacts an object such as a log or branch
3.1.7
pinch kickback
rapid pushback of the chain saw that can occur when the wood closes in and pinches the moving saw-chain (3.3.1) in the cut along the top of the guide bar (3.3.5)
3.1.8
pruning
removal of live or dead branches, or of multiple leaders of shoots, from standing trees
3.2 Types of chain-saws
3.2.1
chain-saw
power-driven tool designed to cut wood with a saw-chain (3.3.1) and consisting of an integrated compact unit of handles, power source, guide bar (3.3.5) and saw-chain, designed to be supported with two hands
3.2.1.1
chain-saw for forest service
chain-saw designed for forest work such as felling (3.1.1), delimbing (3.1.2) and bucking (3.1.3)
Note: See Figure 1.
3.2.1.2
chain-saw for tree service
specialized chain-saw of limited mass, designed for use by a trained operator for pruning (3.1.8) and dismantling standing tree crowns
Note: See Figure 2.
3.3 Cutting equipment
3.3.1
saw-chain
chain serving as a cutting tool, consisting of drive links, cutters and side links held together by rivets
Note: See Figure 3 and Figure 4.
3.3.2
chain guides
plates or guides fitted on one or both sides of the guide bar (3.3.5) where the saw-chain (3.3.1) enters the groove, for assisting in guiding the saw-chain between the drive sprocket (3.3.3) and the guide bar
