Description
When your disc blades start looking more like dull wheels than cutting tools, it’s time for replacements that’ll actually slice through crop residue instead of just pushing it around. This 26-inch notched disc blade brings aggressive cutting action back to your harrow, turning tough corn stalks and matted cover crop residue into properly sized pieces that’ll break down instead of hair-pinning around your planter next spring.
What You’re Getting
- Aggressive notched edge creates a scissor action that slices through tough stalks other blades just bend over
- Quality Boron 15B26 steel maintains 46-52 Rockwell hardness—hard enough to hold an edge but not so brittle it shatters when you clip a rock
- The 1/4-inch thickness provides the beef needed for long service life, while the 4.00-inch concavity creates aggressive soil-throwing action
- Combo hole mounting fits the 1-1/8 inch square by 1-1/4 inch square axles found on many disc harrows
- No fancy coatings here—just quality steel that works
Built for Real Farm Work
This blade fits disc harrows using 1-1/8 inch by 1-1/4 inch square axles, commonly found on mid-size tillage equipment. 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. Whether you’re working corn ground after harvest or breaking down cover crops before planting, this 26-inch blade gives you the cutting diameter to handle the job efficiently.
Made to Last
Osmundson doesn’t mess around with blade materials. This Boron 15B26 steel maintains the perfect hardness range to handle the punishment of field work season after season. The quarter-inch thickness gives you the durability needed for rocky soils and tough residue conditions without the brittleness that causes cheap blades to crack.
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. When replacing blades, never mix worn and new on the same gang—the diameter difference creates uneven cutting that leaves mohawk strips. Track your blade wear by measuring diameter annually; most blades are shot when they’ve lost 3-4 inches. At 26 inches starting diameter, you’ve got good life ahead if maintained properly.
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