Coulter Disk
A Universal Tool
The Gates Coulter Disk is a vertical tillage tool that gives you maximum versatility by also performing as a conventional disk harrow. It performs in the fall or spring. And in conventional tillage or no-till operations. That’s because its front and rear disk gangs can be independently adjusted from 0 to 15 degrees. Run them straight for minimal soil disturbance, adjust them to a full 15 degrees to stir up more soil, or position them anywhere in between to customize the results to meet your specific needs.
Whichever gang angle you choose, the Coulter Disk yields excellent sizing and distribution of residue. Plus, it pulls much easier than traditional disks, so you can run faster while using less fuel.
Applications 
- Corn
Spring tillage starts in the fall. With the toughness of today’s BT corn and multi-stacked varieties, the Coulter Disk can chop and mix the residue with soil to provide better and faster decomposition. Do a pass or two in the fall, and then one in the spring to prepare the perfect seedbed. - Soybeans & Peas
Make a fall pass on ground with tough residue, and use the hydraulic gangs to smoothen the ruts left by combines, grain carts and trucks. - Sunflowers
Get your seeder going earlier and jumpstart the planting season by a couple weeks with the Coulter Disk. Use it to open up and dry the ground, as well as size tough sunflower stalks. - Wheat & Small Grains
Is heavy straw causing your soil to dry out too slowly in the spring? Speed up the process with the Coulter Disk. Use the adjustable gangs to move as much dirt as you want, so you can dry the ground and reduce hairpinning when seeding.
Features
- Independent Front and Rear Disk Gang Adjustment
Customize your tillage results with 0- to 15-degree gang angle adjustment. Adjust on-the-go from your tractor seat with infinitely variable hydraulic adjustment, or opt for the manual adjustment bars at 0, 5, 10 or 15 degrees. - Urethane Torsion Arms
Keep the blades engaged in the ground while floating over rocks and obstacles. The 12 urethane dampeners in each arm allow the Coulter Disk to pull easily while reducing shock and vibration. - Plug-Free Blades
Never again leave the cab to unplug the blades. Even in extremely wet conditions, they will keep turning and give you excellent residue sizing. The Gates private-label, boron-enriched notched blades provide extreme toughness and long life. - Rocking Axle
The wide-spread oscillating transport and wing axles provide excellent floatation. They won’t ridge dirt on tight turns, and they’ll easily handle steep road shoulders. - Fast Operating Speeds
Runs faster and requires less horsepower than conventional disks, so you burn less fuel and finish the field faster. - Rear Hitch Options
Prepare an excellent seedbed by pulling a crumbler or coil packer via the optional rear hitch. - Rolling Baskets
Add optional rolling baskets along with a two-bar harrow for your spring seedbed preparation.
Specifications
| 32 Ft. width (9.75m) | 40 Ft. width (12.2m) | |
|---|---|---|
| Blade Spacing | 6 in. (15.2cm) | 6 in. (15.2cm) |
| Weight (approx) | 14,000 lbs. (6,350 kg) | 16,000 lbs. (7,257 kg) |
| Transport width | 17 ft. (5.2 m) | 19 ft. (5.8 m) |
| Transport height | 14.5 ft. (4.4 m) | 17 ft. (5.2 m) |
| Horsepower requirement | 175 to 300 HP | 200 to 400 HP |
| Hydraulic system requirement | 1,500 psi, 20 gpm min | 1,500 psi, 20 gpm min |
| Operating depth (max) | 4" (10.16 cm) depending on soil type and moisture conditions | 4" (10.16 cm) depending on soil type and moisture conditions |
| Recommended operating speed | 6-10 mph (9.7-16.1 kph) | 6-10 mph (9.7-16.1 kph) |
| Front hydraulic gang angle | Infinitely adjustable 0 to 15 degrees | Infinitely adjustable 0 to 15 degrees |
| Rear hydraulic gang angle | Infinitely adjustable 0 to 15 degrees | Infinitely adjustable 0 to 15 degrees |
| Manual gang adjust bars | 0, 5,10,15 degree positions | 0, 5,10,15 degree positions |
| Tires | 11L-15 F1 highway-rated 12 ply, optional 12.5L-15 | 11L-15 F1 highway-rated 12 ply, optional 12.5L-15 |
| Cylinders (main lift) | Single rephasing 8" stroke | Single rephasing 8" stroke |
| Cylinders (wing lift) | 5" x 36" (2) | 4" x 36" (4) |
| Cylinders (gang adjust) | Double rephase 3" x 6" (8) | Double rephase 3" x 6" (8) |
| Coulter axles | Grease hubs every 1,500 acres, quick change with two u-bolts | Grease hubs every 2,000 acres, quick change with two u-bolts |
Options
- Manual gang adjustment
Individual adjustment bars on each gang (0, 5,10,15 degree positions) - Blades
15/64″ (6mm) thick, 20″ (508mm) diameter boron enriched smooth blade
15/64″ (6mm) thick, 20″ (508mm) diameter, 3″ (76mm) notch, 5 degree shallow concave boron blade - Rear hitch
Bolt on rear hitch for pulling crumbler or coil packer - Harrows
2, 3 or 4 bar harrow with 5/8″ x 30″ (16mm diameter x 762mm long) tines standard
Other tines = 1/2″ x 22″ or 9/16″ x 26″ - Rolling baskets (crumbler)
14″ diameter – chevron pattern round bar with double tapered roller bearing hubs
Quick-tach onto 2 bar Gates Magnum harrow