Roller chain maintenance: Steps to realize maximum life

Posted on 05/06/2016 in Featured, Maintenance, Service.

Elongation is inevitable.

Something you can change: its rate.

When it comes to roller chain maintenance, knowing when to replace the chain is directly tied to productivity. Improper lubrication and replacement places a greater strain between the pin and bushing, causing increased elongation at a faster rate of wear. Case IH roller chain lubricants contain the right mix of chemical properties to meet chain driver needs—and achieve maximum wear life.

Systems with more than 67 sprocket teeth should follow the following formula to calculate maximum acceptable elongation: 200/Nm where N stands for the number of teeth on the largest sprocket. So for example, 100-tooth sprockets need chain replacement at 2 percent elongation. Case IH recommends chain and sprocket replacements after the chain elongates 3 percent for systems with less than 67 sprocket teeth.

CNH 5247-01 Digital Development_CIH_Roller Chains_blog content

To run elongation at a more gradual pace. Secure your roller chains against fast elongation rates and ensure longer chain life with the following tips:

  • Lubricants must freely flow into the joint to ensure maximum wear life. Ask your Case IH dealer for the right lubrication method to match your needs.
  • Replace sprockets after it looks worn or if a hook forms on the sprocket’s tooth. The level of use must remain consistent between chains and sprockets, so that worn chains should not be run on new sprockets and new chains should not be run on worn sprockets.
  • Align sprockets and guides to avoid chain overload.
  • Avoid too much chain tension.

Before harvest this season, schedule a combine inspection.