Description
When your disc blades start looking more like smooth wheels than cutting tools, it’s time for replacements that’ll actually slice through residue instead of just pushing it around. This 24-inch notched disc blade from Osmundson brings aggressive cutting action back to your harrow, turning tough corn stalks and matted residue into properly sized pieces that’ll break down instead of hair-pinning around your planter next spring.
What You’re Getting
- 24-inch diameter with aggressive notched edge that creates scissor action to slice through tough stalks
- Quality Boron 15B26 steel with 46-52 Rockwell hardness—hard enough to hold an edge but tough enough to handle field stones
- 1/4-inch thickness provides the beef needed for long service life in demanding conditions
- 2.80-inch concavity creates the aggressive soil-throwing action that buries residue and levels fields
- Single punch mounting fits harrows with 1-3/4 inch round axles
Built for Real Farm Work
Your disc harrow needs to do more than just roll over crop residue—it needs to cut, size, and mix that material into the soil profile. These notched blades attack residue aggressively, with each notch creating a scissor action that slices through tough stalks other blades just bend over. Perfect for disc harrows working in heavy residue conditions like continuous corn, thick crop stubble, or after cover crops where smooth blades would just push material around.
Made to Last
Osmundson doesn’t mess around with blade materials. This Boron 15B26 steel maintains the perfect hardness range—hard enough at 46-52 Rockwell to hold an edge through acres of tough tillage, but not so brittle it shatters when you clip that hidden field stone. No fancy coatings here—just quality steel that works season after season.
Good to Know
Notched blades excel in heavy residue but can be too aggressive in light soils or minimal trash conditions. Many operators run notched blades on front gangs for cutting, smooth on rear for finishing. The single punch mounting means checking for elongated holes from wear—loose blades wobble and wear prematurely. When replacing blades, never mix worn and new on the same gang as the diameter difference creates uneven cutting.
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