Description
When you’re out working residue-heavy fields or trying to size up tough corn stalks, a worn blade that just pushes things around isn’t cutting it anymore. This 18-inch notched disc blade brings back the aggressive cutting action your harrow needs, with serrated edges that slice through material other blades just bend over. It’s a direct replacement that gets you back to proper tillage instead of making extra passes.
What You’re Getting
- Notched edge design creates a scissor action that slices through tough stalks and heavy residue
- Boron 15B26 steel construction maintains 46-52 Rockwell hardness for long edge life without brittleness
- Single punch mounting hole fits standard 1-1/8 inch square axles perfectly
- Standard concavity throws soil aggressively for better residue burial and field leveling
- 3/16 inch thickness provides durability while keeping weight manageable for smaller tractors
Built for Real Farm Work
This blade fits disc harrows with 1-1/8 inch square axles, commonly found on mid-size tractors used for secondary tillage 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. Whether you’re working corn ground, preparing seedbeds, or managing cover crop residue, this blade handles the conditions where smooth blades struggle.
Made to Last
This Boron 15B26 steel maintains the perfect hardness range – hard enough to hold an edge through acres of tough tillage, but not so brittle it shatters when you clip that hidden field stone. The 18-inch diameter gives you plenty of cutting life, and Osmundson’s reputation for consistent steel quality means you won’t get surprises when it comes to wear patterns.
Installation Notes
This is a direct replacement – no modifications needed. The single punch mounting means checking for elongated holes from wear – loose blades wobble and wear prematurely. 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.
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