When you’re working rocky ground or clearing timber, you need disc blades that’ll handle punishment without leaving you stranded. This smooth edge blade is built specifically for rock disc applications like the John Deere 637, where cutting aggressive residue is important but being too aggressive in rocks and debris means constant blade replacement.
What You’re Getting
- Smooth cutting edge that slices cleanly without catching on rocks and trash
- Heavy 1/4-inch boron steel construction with 46-52 Rockwell hardness for long wear
- Standard 2.80-inch concavity provides good soil flow without excessive aggressiveness
- Single punch mounting hole for secure, centered blade positioning
- Quality Osmundson manufacturing that meets OEM standards
Built for Rock Disc Work
This blade fits John Deere 637 rock disc harrows and similar equipment designed for challenging conditions. Rock discs are workhorses used for land clearing, pasture renovation, and preparing rough ground where conventional disc harrows would suffer excessive damage from rocks and debris.
Made to Last
Osmundson blades are manufactured from boron 15B26 steel with 46-52 Rockwell hardness, giving you the right balance of toughness and wear resistance. This isn’t bargain steel—it’s the same material used in OEM blades because it holds an edge while flexing enough to survive rock impacts.
Good to Know
Installation is straightforward with the single punch hole design. Check for elongated holes from wear since loose blades wobble and wear prematurely. When replacing blades, never mix worn and new on the same gang since diameter differences create uneven cutting. Consider ordering a full set—shipping costs are often the same and you’ll eventually need them all.
