A square gangbolt gives the disk gang extra strength. Extra-long triple lips on the inner race, combined with a wide seal between the outer race and flange, flex to resist wear, keep dirt out, and help maintain lubrication. Bearings are self-aligning and greasable for longer life. And they're backed with a two-year warranty. Welded steel spools add protection.
Wheel modules are maintenance-free.
Unlike the joints in other disks that wear over time and distort depth by increasing play in the rockshaft, John Deere disks feature maintenance-free wheel modules. And there's no wear in the joint to affect depth. Either way, soil and residue are directed backward rather than up toward the disk gangs where they can interfere with the disking action. Accurate depth control. Single-point depth control is standard on folding WheatLand Disks, to let you easily and precisely set depth from one point at the front of the disk.