Description
When you’re prepping seedbeds or chopping residue, the last thing you want is wobbling disc gangs or uneven blade spacing. This 5-inch spool keeps your disc blades properly spaced and aligned on the axle, ensuring smooth operation and consistent cutting action across the field. Whether you’re working through corn stalks or preparing ground for planting, proper disc spacing makes all the difference in getting the job done right.
What You’re Getting
- 5-inch width designed for 9-inch blade spacing on 1-1/4 inch round axles
- Heavy-duty construction that handles the constant vibration and loads of disc work
- Precise fit maintains proper blade alignment for consistent cutting depth
- AgSmart quality that meets or exceeds original equipment standards
Built for Real Farm Work
This spool fits John Deere 300 Series disc harrows and the popular 635 and 640 tandem disc models. These are the machines you count on for primary tillage, residue management, and seedbed preparation on everything from small grains to row crops. The precise 5-inch width and round bore design ensure your disc gangs operate smoothly whether you’re cutting through heavy residue or working in lighter soils.
Made to Last
Disc spools take a beating from constant rotation, dirt, and the shock loads that come with hitting rocks or hard ground. This one’s built with quality materials that resist wear and maintain their dimensions season after season. The smooth finish reduces friction and helps prevent debris buildup that can throw your gangs out of balance.
Good to Know
Installation is straightforward – slide it onto the axle where your old spool was positioned. Make sure you maintain the correct spacing between blades as specified in your operator’s manual. A good tip from the field: when replacing one spool, check the condition of the others on that gang. They typically wear at similar rates, and replacing them as a set keeps your disc running smooth and balanced.






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