When a roller chain is applied, shaft positions is usually arbitrarily established. Having said that, in principle, comply with the illustration proven below. That is, if the chain is tensioned horizontally, continue to keep the leading tensioned. Steer clear of vertical transmission each time possible. In an inevitable situation, spot the massive sprocket with the bottom irrespective of the route of rotation.
Once the chain layout is undesirable:
?Once the major is sagging plus the sprocket center distance is brief:
As illustrated under, adjust the sprocket center distance shaft to eradicate the sag.
?Once the top rated is sagging along with the sprocket center distance is long:
As illustrated below, install an idler from inside to eradicate the sag.
?When the chain is vertical or inclined:
Reduce the extra sag by a tensioner. In this instance, a tensioner that instantly eliminates the sag offers much better outcomes.
When a pulsating load acts in high pace operation:
The chain’s vibration as well as load affect frequency or chordal action 
could synchronize to amplify vibration on the chain. Because vibration influences the chain, take countermeasures to prevent vibration inside the following measures:
?Adjust the chain speed.
?Boost chain tension. Having said that, note that over-
tensioning can shorten the lifestyle with the chain. ?Use an idler or tensioner to divide the span
?Set up a guide stopper to avoid vibration.
Note: Chordal action refers towards the vertical motion of chain caused when it truly is engaged with sprockets.
