Description

When your harrow isn’t leaving the smooth, level seedbed you need for planting season, it’s often because your disc blades have lost their edge and concavity. Worn blades start looking like smooth wheels instead of cutting tools, just pushing residue around rather than properly sizing and mixing it into the soil. This 24-inch smooth disc blade from Osmundson brings back that crisp cutting action and soil-throwing ability your harrow had when it was new.

What You’re Getting

24-inch diameter with 1/4-inch thickness for long service life in tough conditions
Boron 15B26 steel with 46-52 Rockwell hardness – hard enough to hold an edge through acres of tillage, but not so brittle it shatters when you hit a hidden field stone
2.80-inch concavity that creates aggressive soil-throwing action to bury residue and level fields
Combo hole design fits both square and round axle configurations on most disc harrows

Where This Part Shines

This blade works on disc harrows using the 1-1/8 square by 1-1/4 square axle setup. Many operators run smooth blades on rear gangs for finishing work, as they create a more even soil surface compared to notched blades. It’s ideal for secondary tillage, seedbed preparation, and working fields with moderate residue levels where you need good soil mixing without overly aggressive cutting.

Made to Last

No fancy coatings here – just quality steel that works. The Boron steel maintains proper hardness to slice through soil and crop residue season after season, while the 1/4-inch thickness provides the weight and durability needed for consistent performance in varying field conditions.

Installation Notes

When replacing blades, never mix worn and new on the same gang – the diameter difference creates uneven cutting that leaves mohawk strips. A quick tip: coat blade edges with used oil when storing your harrow to prevent rust pitting that ruins cutting ability. The combo hole makes installation straightforward on most harrow axle configurations.