The Tsubaki Chain Wear Indicator Kits are designed to easily measure roller chain wear elongation, commonly referred to as “stretch.” These kits are available for both ANSI and British Standard roller chains.

Detecting and measuring chain wear elongation is critical for achieving reliable operation of industrial chains. Although it is common for users to employ a tape measure or ruler, it is more effective to use a specialized tool to determine whether the chain requires replacement.

Causes of industrial roller chain wear

Despite common misconceptions, chains do not physically stretch over time when used at rated loads. Roller chain elongation occurs as the material wears away at the chain’s pins and bushings, creating more space between these components. This wear can occur due to many factors, such as:

  • Insufficient chain lubrication
  • Poor maintenance
  • High-speed operations
  • Frequent heavy loads
  • Extreme temperatures
  • Exposure to abrasive environments

Measuring chain wear

Understanding how to properly measure chain wear elongation will help to proactively ensure optimum performance. When left unchecked, chain wear may eventually result in slippage, poor equipment performance and unwanted downtime.

Instead of a ruler or tape measure, experts recommend using a specialized measuring tool that provides a more accurate indicator of chain wear. In order to assure measurement accuracy, the chain should be taut. In most industrial roller chain applications, 1.5%-2% is typically considered wear life limit requiring chain replacement.

Tsubaki's Chain Wear Indicator Kit for ANSI and British Standard

Using our Chain Wear Indicator Tools as part of regular plant maintenance will simplify your chain maintenance operations and keep equipment running optimally.

Chain Wear Indicating Kits include:

  • Five chain wear measuring tools
  • Chain wear indicator guide
  • Roller diameter wear gage
  • Width measuring tool