Description
When your disc blades start pushing residue instead of slicing through it, you know it’s time for fresh cutting edges that’ll actually do the job. 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. At 28 inches diameter with a smooth edge, this blade gives you the size and cutting power to handle bigger tillage operations.
What You’re Getting
- Heavy-duty 5/16-inch (8mm) thickness that won’t bend or warp under load
- Standard 4.25-inch concavity for proper soil flow and mixing action
- Combo hole design fits both 1-1/2 inch square and 1-5/8 inch round axles
- Smooth cutting edge that’s ideal for finishing passes and fine seedbed preparation
- Osmundson quality construction that farm mechanics trust
Built for Real Farm Work
This 28-inch blade is sized for larger disc harrows handling substantial acreage – the kind of machines you’ll find on row-crop farms working corn and soybean ground. The smooth edge makes it perfect for secondary tillage when you need to break down clods and level the field without being too aggressive on the crop residue.
Made to Last
No fancy coatings here – just quality steel that works. The 5/16-inch thickness gives this blade the backbone to handle rocky ground and heavy clay without flexing, while the Boron steel composition resists wear better than standard carbon steel blades.
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. When storing disc harrows, coat blade edges with used oil to prevent rust pitting that ruins cutting ability. Track your blade wear by measuring diameter annually; most blades are shot when they’ve lost 3-4 inches.
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