If the installation does not involve adjusting the shaft center of the slack section, chain adjustment should be carried out either at the beginning, or after normal wear has occured. Leaf chains and conveyor chains do not contain offset link. Read directly «chains with an even number of pitches».
Chain technique
Chain length adjustment – Shortening
Chains with an even number of pitches
Shortening by one pitch
Chain up to and including 25,4 mm pitch.
first remo- ve four pitches of chain from one end, that is two inners and two outers by extracting outer link A (Fig.a). Then fit a double offset link N°221, a spring clip connecting link N° 206 or a riveting outer link N°205 (Fig.b).
Chain with a pitch of 31,75 mm or above.
first remove two pitches of chain from one end, that is one inner and one outer link by extracting the outer link A (Fig.c). Then fit a single offset link (Fig.d).
first remove two pitches of chain from one end, that is one inner and one outer link by extracting the outer link A (Fig.c). Then fit a single offset link (Fig.d).
Shortening by two pitches
Remove two pitches from one end, that is an inner and outer link by extracting the outer link A.
Chains with an odd number of pitches
Shortening by one pitch
Chain of pitch up to and including 25,4mm:
The chain ends with an offset link. Remove the cranked link.
Chain with pitch of 31,75mm or above:
The chain ends with a single offset link which also serves as a connecting link. Extract the the outer link A and replace it with a connecting link N° 209 to reassemble the chain.
Shortening by two pitches
For all chains.
Extract one inner link removing the outer link at the opposite end of the offset link.
NOTE: Leaf chains and conveyor chains don’t have any crank links, as a consequence they are only concerned by the shortening of 2 pitches.
