Great Plains Ultra-Disk in a Class All Its Own

Great Plains introduces the exclusive Ultra-Disk™, a fresh tillage solution that will allow farmers to slice through high-residue field conditions at higher operating speeds than conventional disks. The Ultra-Disk is equipped with 24-inch blades and higher clearance between gangs, along with shorter front-to-rear gang spreads to maintain consistent depth across the entire width of the machine. Great Plains debuted the Ultra-Disk at the Great Plains National Dealer Meeting in Des Moines.

“Our new Ultra-Disk has parallel gangs that enable farmers to work the soil from 2 to 5 inches deep for consistent, primary tillage and a sturdy, well-balanced design,” says Rye DeGarmo, Vice President of Engineering with Great Plains. “It can handle heavier, more aggressive rear attachments, while reducing negative tongue weight. Plus, producers will find that the Ultra-Disk’s unique design leaves a higher-quality finish than a conventional double-offset or tandem disk.”

The Ultra-Disk is equipped with serrated, low-concavity SpeedBlades™ that cut and incorporate residue better than concave blades. With a 5 percent faster turning speed than concave blades, the SpeedBlade aggressively powers through heavy residue and thoroughly mixes soil at high speeds without ridging. The self-sharpening SpeedBlade works like a regular notched blade, but its shallower cutout allows for shallower working depth. The low-concavity SpeedBlade stays sharper longer and maintains its shape as it wears.

The Ultra-Disk handles side-loading more reliably, as it is equipped with cast hubs that have preset tapered bearings, rather than conventional ball bearings. The maintenance-free bearings have a six-lip seal on each side to lock in grease and prevent contamination, extending the life of the bearings and reducing maintenance time and costs.

“The Ultra-Disk is equipped with individual, heavy-duty C-shanks,” says DeGarmo. “Those shanks provide excellent residue flow with effective cutout, thanks to their 18-degree angle on the front gangs and 14-degree angle on the back gangs with 10-inch spacing.”

Farmers can customize their Ultra-Disk with one of three finishing attachments to fit their field conditions. Each hydraulically controlled rear attachment creates a uniform seedbed by breaking up clods and consolidating soil for uniform density:

  • The MaxLift™ cast roller aggressively firms and corrugates the soil to limit wind erosion and capture winter moisture;
  • The seedbed conditioner reel has a 17-inch roller and 1-inch rods and leaves the ground smoother in low residue situations while permitting seeding directly behind the unit; or
  • Combine two-bar coil tines with the seedbed conditioner reel to evenly distribute residue, leaving the ground smooth for planting.

The Ultra-Disk will be available for purchase in 2018. To learn more about the new Ultra-Disk, visit or your local Great Plains dealer.