The relation between the pitch 'p' and pitch circle diameter 'D' of chain is given by
Where 'T' is the number of teeth
psu dh fip 'p' ,oa fip o`Ùk O;kl 'D' ds eè; laca/k fn;k tkrk gSA
tgk¡ 'T' nk¡rkas dh la[;k gSA
Relation Between Pitch and Pitch Circle Diameter
Consider one pitch length AB of the chain subtending an angle θ at the centre of sprocket (or pitch circle),
Let D = Diameter of the pitch circle, and
T = Number of teeth on the sprocket.
From Fig. we find that pitch of the chain,
Note: The angle θ/2 through which the link swings as it enters contact is called angle of articulation.
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