Idler Sprocket for John Deere 400/500 Series Balers and Corn Headers
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Idler Sprocket for John Deere 400/500 Series Balers and Corn Headers

Original price was: $82.50.Current price is: $24.75.

SKU: SMA-520-216239 Category:

Description

When your baler or corn header starts making noise or the chains aren’t running smooth, there’s a good chance one of your idler sprockets has seen better days. This little component keeps your drive chains properly tensioned and aligned—when it’s worn out, everything downstream starts to suffer. You’ll notice choppy operation, increased wear on other parts, and eventually chain jumping or breakage that’ll shut you down in the middle of harvest.

What You’re Getting

  • Precision-manufactured 12-tooth sprocket designed for #80 chain systems
  • 5/8 inch bore fits standard shaft sizes without modification
  • AgSmart quality construction that matches OEM specifications
  • Direct replacement for worn factory sprockets—no guesswork on fitment

Built for Real Farm Work

This sprocket is engineered for the demanding conditions of hay and grain harvest. Whether you’re running a round baler through heavy windrows or pushing your corn head through high-yielding fields, this part handles the constant tension and alignment duties that keep your equipment running smoothly. The #80 chain it works with is built for heavy-duty applications where reliability matters most.

Made to Last

Farm equipment idler sprockets take a beating from dust, debris, and constant operation. This replacement features hardened steel construction that resists wear and maintains proper chain engagement season after season. The machined bore ensures a secure fit on the shaft, preventing the wobbling that causes premature chain wear.

Good to Know

This is a straightforward replacement that most operators can handle with basic tools. Make sure to inspect your chain condition while you’ve got things apart—a worn sprocket often means the chain isn’t far behind. Keep some chain lubricant handy during installation, and check alignment carefully to prevent future problems.

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