Replacement disc blades that fit the Sunflower 6631 Vertical Tillage. In stock, ships from Ames, Iowa. Free shipping on orders $600+. Call the concierge line at 515-686-5575 with your serial number if you're not sure which blade you need.
Sunflower 6631 blade fitment at a glance
- Machine family: Vertical Tillage
- Common blade sizes: 20", 22", 24"
- Edge configuration: notched (aggressive residue-cutting front-gang blades)
- Typical axle bore: 1-1/4" sq
Shop Sunflower 6631 blades by size
- 20" blades — in stock
- 22" blades — in stock
- 24" blades — in stock
Ordering the right blade for your Sunflower 6631
To be certain the blade you order fits, verify three specs on your worn blade before ordering:
- Outside diameter — measure across the full width of the blade in inches. Blades wear from the outside in, so measure a low-wear reference blade if possible.
- Axle bore — 1-1/4" sq is standard for the Sunflower 6631, but confirm on your machine.
- Edge profile — notched (aggressive residue-cutting front-gang blades). Match what came off, unless you're intentionally changing edge to change residue behavior.
If any of those are unclear, call 515-686-5575 and we'll match a blade from stock.
Other Sunflower models we cover
- Sunflower 1211 disc blades
- Sunflower 1233 disc blades
- Sunflower 1234 disc blades
- Sunflower 1435 disc blades
- Sunflower 1444 disc blades
- Sunflower 4530 disc blades
- Sunflower 4610 disc blades
- Sunflower 4630 disc blades
Related resources
- Sunflower disc blades collection
- All disc blades for sale — full catalog
- How to size disc blades — blade sizing guide
- Notched vs. smooth disc blades
- When to replace disc harrow blades
Frequently asked questions
What size disc blades fit the Sunflower 6631?
The Sunflower 6631 (Vertical Tillage) typically runs 20", 22", 24" blades depending on the gang and configuration. Confirm by measuring the outside diameter of a worn blade on your machine, or call 515-686-5575 with your model serial and we'll match it.
Are these OEM Sunflower blades?
No — these are premium replacement disc blades manufactured to fit the Sunflower 6631. They match OEM dimensions, edge profile, and axle bore, and are drop-in replacements. DiscBladesForSale.com is not affiliated with Sunflower.
What edge should I use — notched or smooth?
On a vertical tillage like the Sunflower 6631, the standard configuration is notched (aggressive residue-cutting front-gang blades). If you're running heavy corn stalks or no-till, run notched on the front gangs. If soil finish matters more than residue cut, run smooth.
DiscBladesForSale.com is not affiliated with, endorsed by, or sponsored by Sunflower. "Sunflower" and "6631" are trademarks of their respective owners, referenced here only to describe blade fitment.