DID 60 standard roller chain - Big Bike Webshop

Roller Chains for Power Transmission Designing of Chain Transmission
Roller Chains for
Power Transmission
Designing of Chain
Transmission
Layout
When a roller chain is used, shaft positions can be arbitrarily determined. However, in principle, follow the illustration
shown below. That is, if the chain is tensioned horizontally, keep the top tensioned. Avoid vertical transmission
whenever possible. In an inevitable case, place the large sprocket at the bottom regardless of the direction of rotation.
Desirable layout
Undesirable layout
When the chain layout is undesirable:
¡When the top is sagging and the sprocket center
distance is short:
As illustrated below, adjust the sprocket center distance
shaft to eliminate the sag.
¡When the top is sagging and the sprocket center
distance is long:
As illustrated below, install an idler from inside to
eliminate the sag.
Idler
Travel
When a pulsating load acts in high
speed operation:
The chain's vibration and the load impact frequency or
chordal action may synchronize to amplify vibration on
the chain. Since vibration affects the chain, take
countermeasures to prevent vibration in the following
measures:
¡Change the chain speed.
¡Increase chain tension. However, note that overtensioning
can shorten the life of the chain.
¡Use an idler or tensioner to divide the span.
¡When the chain is vertical or inclined:
As illustrated below, eliminate the extra sag by a
tensioner. In this case, a tensioner that automatically
eliminates the sag gives better results.
Tensioner
Idler
Spring type
tensioner
Tensioner
¡Install a guide stopper to prevent vibration.
Note:
Chordal action
refers to the
vertical motion of
chain caused when
it is engaged with
sprockets.
Guide stopper
126