28-Inch Notched Disc Blade for Standard Disc Harrow with 1-1/2 Inch Square Axle

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 28-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. The notched edge design gives you that scissor action needed to power through heavy crop residue.

What You’re Getting

• Aggressive notched edge with each notch creating a scissor action that slices through tough stalks other blades just bend over
• Premium Boron 15B26 steel with 46-52 Rockwell hardness that holds an edge through acres of tough tillage without shattering when you hit that hidden field stone
• Heavy-duty 8mm (5/16-inch) thickness provides the beef needed for long service life
• Single punch mounting hole for secure fit on 1-1/2 inch square axles
• 4.25-inch standard concavity creates proper soil-throwing action

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. This 28-inch size is perfect for mid-sized disc harrows handling everything from corn stubble to heavy cover crop residue.

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.

Good to Know

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 – 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.