• You Need It. We Have It. Try Whisler.

  • Roller Chain is made up of pins, bushings & rollers.   These parts are constantly articulating as they enter and exit the sprocket.  Eventually, there is wear in these components which can be measured in “stretch” in the roller chain.  

    The general rule of thumb (there are exeptions) is that if a chain achieves a 3% increase in the original length, it’s time to replace the chain.  The chain must be measured under tension on the drive or you can also hang the chain with a specified weight suspended on it. 

    As an example, if you measure a 24 pitches of #80 roller chain, the original length would be 24” (24 pitches X 1” pitch). 

    If the chain (under tension) measures 24.75” or more, it’s time to go!  Questions, please ask!

    You Need It. We Have It. Try Whisler.