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 26-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
- Each notch creates a scissor action that slices through tough stalks other blades just bend over
- 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
- Quarter-inch thickness provides the beef needed for long service life in demanding field conditions
- Single punch mounting hole fits any disc harrow using 1-1/2 inch square axles with appropriate spacing
- 4.00-inch concavity creates aggressive soil-throwing action that buries residue and levels fields
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. This 26-inch diameter gives you excellent penetration and residue handling for medium to heavy-duty tillage work. Whether you’re working corn ground, breaking down cover crops, or preparing seedbeds, this blade handles the tough stuff that comes with modern farming.
Made to Last
No fancy coatings here – just quality steel that works. Osmundson uses proven Boron steel that’s been field-tested by farmers for years. The material won’t chip or crack when you hit rocks, and it holds its cutting edge through season after season of use.
Good to Know
When replacing blades, never mix worn and new on the same gang – the diameter difference creates uneven cutting that leaves mohawk strips. Field-proven wisdom: 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. Track your blade wear by measuring diameter annually; most blades are shot when they’ve lost 3-4 inches.
