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 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 holds an edge through acres of tough tillage at 46-52 Rockwell hardness
- Combo hole design fits 1-1/2 square x 1-5/8 round axle systems
- 2.80-inch concavity creates aggressive soil-throwing action that buries residue and levels fields
Built for Real Farm Work
In high-residue conditions like continuous corn or after cover crops, that notched edge makes the difference between effective residue management and a plugged-up mess that forces you to make extra passes. 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.
Made to Last
Osmundson doesn’t mess around with blade materials – this Boron 15B26 steel maintains the perfect hardness range, hard enough to hold an edge but not so brittle it shatters when you clip that hidden field stone. No fancy coatings here – just quality steel that works.
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. 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. At 24 inches starting diameter, you’ve got good life ahead if maintained properly.






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