Download "Double Disk Direct Seeding " Brochure

With more than a decade of experience in building double disk openers, K-Hart has now become one of the leading manufacturers of disk openers. Our collective ingenuity and experience is available in two different models of direct seeding disk openers. Either model can be purchased individually for retrofitting onto an existing cultivator frame OR as part of a package to complete a K-Hart Air Drill that includes a K-Hart heavy-duty frame in widths available from 30' to 60'. Click on the products button to find out more about our frame design.

K-Hart Model 2612

Model 2612 is a heavy-duty no-till double disk-seeding opener, a redesign from our previous model 2611. Model 2612 now features a parallel trip linkage giving way for straight up and down travel of 10" and can be adjusted to different down pressures without tools. Down force pressure on the blades now cover a wider range, from 75lbs up to about 600lbs in order to match different soil conditions. The new designed packer now offers a wide range of packing force from 15lbs to 110lbs, adjustable without tools. The packer assemblies also offer a K-Hart exclusive packer. When in working position disk depth control. However, in spots where the opener rises to go over a rock, the packer is spring loaded in the opposite direction and stays on the ground at consistent packing pressure. Large 16" diameter disk with 3/4" offset arrangement supported by a triple lip double row ball bearings system gives years of maintenance free service.

K-Hart Model 3612

Model 3612 is a specifically designed double disk no-till openers which rotates on pin located in the mount cap for tripping when obstacles are encountered, having up to 12" of obstacle clearance. A minimum of 80lbs to a maximum of 500lbs of force can be set for blade pressure ensuring that you have a wide range of pressure setting for varying soil conditions. Spring Load or solid packer options ensures the seed is packed and off to a healthy start. Packer wheels have the option of swiveling or being locked solid. Large 16" diameter disk with 3/4" offset arrangement supported by a triple lip double row ball bearing system gives years of maintenance free service.

Available options for both the 2612 and the 3612:

• Model 2612 and 3612 can be fitted with K-Hart's optional residue managers. No other residue manager on the market offers all of the following features: adjustable blade angles, an exclusive adjustable spring for different down pressures and a lock up tab when the residue manager is not required. It also has a proven bearing system that will out perform most bearing systems, giving years of trouble free operation. Our steel Residue manager blades are made with special wear resistant material for exceptional durability. The exclusive K-Hart trip assembly helps eliminate damage when tripping over rocks allowing up to 10" of trip travel.
• Both Models can be equipped with optional Mud scrapers for cleaning between the disks.
• Both Models can be equipped with our many different packer options.

1. Why choose disk openers over knife or spoons for direct seeding?

Disk openers (Pro)	Knife openers/spoons (Con)
Low horsepower requirement.	Higher horsepower requirement.
Lower fuel costs.	Higher fuel costs.
Higher seeding speeds while still maintaining a smooth soil seedbed.	Higher seeding speeds leave the seedbed very rough relating to higher repair bills for following field operations by traveling over rough ground.
Can not pull up rocks.	Great at pulling rocks.
Seed through high standing stubble. Can use combine stripper headers or straight cutter headers and cut as high as you like. No restrictions.	Monitor how high you cut with your combine header. As a rule of thumb you should not cut any higher than the width or spacing of your seeding tool.
Seed with the least amount of soil disturbance reducing the potential of germination of weed seeds.	Promotes more weed germination than disk opener.
Seed into vine crop stubble with no hang ups (Example: pea stubble).	Vines hang on to openers causing bunching in the field.
Seed in to wetter soil conditions.	Need drier soil conditions to prevent plugging of openers.

2. Why choose K-Hart double disk openers over competitors double disk openers?

K-Hart double disk openers	Competitors double disk openers
206 series double roll ball bearings with triple lip seals on both inside and outside. Improved design, better than using tapered roller bearings.	Smaller, inferior single ball bearings with single lip or double lip seal. They use small 204 or 205 series bearings.
The largest and best-protected bearing system in the industry. Besides the triple lip seal protecting both sides of the bearing, we also have a heavy duty rubber seal and a dust cap to give you 4 chances of protection from dirt entering the bearing.	No added dust caps or external seal protection.
3/4" offset leading blade. which allows the opener to cut through residue and soil better than nose to nose blades.	Nose to nose blades. Greatly increases the chance of hair pinning.
16" Heavy Duty blades made with the latest technology and material available to ensure long lasting durability.	14" or sometimes 15" lighter material blades.
Largest selection of packers on the market.	Limited packer choices.
Built Heavy Duty, specifically designed for no-till conditions but can also work in pre-worked ground.	Designed more for lighter duty no-till work.

3. Why choose K-Hart double disk openers over competitors single disk openers?

K-Hart double disk openers	Competitors single disk openers
K-Hart disk openers have less complicated design having fewer moving parts.	More moving parts. Depth wheels etc
Easier to change seeding depths with one frame cylinder stop.	To change seeding depths, each opener has to be individually adjusted.
Can work no-till and pre-worked ground.	Single disks openers have problems keeping the disk turning loose soils.
Less horsepower required for blades to roll straight ahead.	Single disk openers run on angles requiring more horsepower.
Minimum residue disturbance.	Most single disk openers use a side depth wheel. This wheel pulverizes the soil it rides on, making the soil prone to wind erosion.

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