Enviro DD drills are an accurate, robust double disc air seeder, boasting low maintenance with few moving parts, and can penetrate the toughest conditions, while being easy to set up and operate.
Each vee-shaped double disc assembly has a leading 380mm diameter scalloped disc which cuts through trash and establishes a tilth while making a slot in the ground. The paired plain disc holds the slot open for the seed and fertiliser placement. A following press wheel, roller or harrows are used to close the slot, trapping moisture and creating seed to soil contact which is essential for enhanced germination.
Dual 700 litre hoppers with optional 300 litre extensions increase productivity and reduce downtime.
The DD drills come in 3.0m and 3.5m widths. Options include press wheels, electric drive or ground drive, wide tyres, lube systems and cranes for loading bags. This is an incredibly versatile disc drill ideal for farmers and contractors.
Small to large
All
Double disc system with ground following ability. The leading 380mm scalloped disc cuts through trash and disturbs the soil enough to create tilth promoting faster germination. The combination of scalloped and plain discs in "v" sets create a slot for the seed and fertiliser placement.
Flexible HDPE scrapers clear mud and trash from between the double disc assemblies so that seed and fertiliser keeps flowing freely for even planting
The spring-loaded design allows the discs to closely follow ground contours, while stones are rolled over rather than being pulled out. Greasable, replaceable brass bushes in the pivot points help extend the machine’s service life
Optional press wheels close the seed slot creating a sealed vapour rich environment for excellent germination, gently rolling the seedbed for a consistent, even finish. Spring-loaded and mounted to the disc arm, they closely follow the discs and contour smoothly over stones and trash.
The large flotation transport wheels also act as the sowing depth control. Wheel placement is central between the front and rear rows of discs for even sowing depths across the length of the drill.
Sowing depth is quick and easy to set with adjustable threaded depth stops on the hydraulic rams on each transport wheel leg.
The front and rear sowing disc depths are levelled up using a turnbuckle linkage on the front drawbar.
The high speed hydraulic fan is powerful to distribute seed and fertiliser evenly to the planting discs, even on steep slopes. Airflows can be increased for heavy rates of fertiliser, or reduced to eliminate seed bounce.
An oil cooler mounted on the fan inlet cools the tractor's hydraulics and utilises the heat to warm air going to the seeder distribution heads to prevent moisture plugging. The oil cooler has an over pressure valve and pressure gauge and uses a specially designed aluminium matrix core to utilise 100% of the air going into the fan.
The airflow butterfly can be adjusted to control airflows for heavy sowing rates, or to reduce seed bounce from the sowing slots
Split hoppers for seed and fertiliser. 700L each side or up to 1200L each with a hopper extension fitted. The airflow distributor heads are installed inside the hoppers for a compact design that keeps them out of the weather.
A strainer mesh in the front hopper is useful for filtering out lumps and bag tags as the hopper is filled.
Each metering unit inlet has an agitator shaft to keep seed and fertiliser flowing evenly
Accord style metering system - proven and highly accurate - essential when working with high value seed and fertiliser. It handles a wide range of products, from fine seeds at 1 kg/ha to peas at 350 kg/ha, and everything in between. A user-friendly trapdoor allows for quick and easy emptying of leftover seed and fertiliser. Compatible with both electric and mechanical drive systems (DD30)
Ground drive metering through a jockey wheel and chain drives is standard equipment on the base model DD30. This can be optionally upgraded to electric drive.
Electric drive metering systems (optional on the DD30 - standard on the DD35) are powered with 12V DC brushed motors through a reduction gearbox. This provides smooth variable speed control with loads of torque for heavy sowing rates, and fine control for low rates below 1kg/hectare
Large loading/access platform with safety rails and lots of room for extra seed bag storage
Seed and fertiliser is kept dry in the hoppers with a stretched tarpaulin cover. This is easy to unclip and pull out of the way for refilling.
Technology
Air distribution
The air distribution system consists of a high-speed hydraulically powered fan blowing air through a venturi system and distributor heads out to the disc coulters.
Seed and fertiliser is metered out of the storage hoppers and drops into the passing airstream.
The fan has an oil cooling radiator mounted to the suction inlet which warms and dries the air to minimise blockages in humid conditions.
Air distribution is excellent on hills, uneven terrain or smooth worked ground because the seed is always being blown to the ground, rather than relying on gravity, chatter and hose vibration.
The air hoppers are typically larger than the gravity boxes so they are easier to fill, and air seeders can be wider than gravity drills and easily folded up to a transport width.
Double disc technology
Lower investment cost than a triple disc drill and lower maintenance costs with less wearing parts.
Large 380mm diameter heat treated discs work hard and have a long life.
A scalloped disc leads 30mm ahead of a plain disc to cut through trash and open up a rough slot creating tilth for good germination. The (full assembly) leading scalloped disc removes the need for an opening disc.
The plain disc holds the slot open to place the seed and the fertiliser into the slot.
The spring loaded jump assembly creates downward pressure but also allows the discs to ride up and over rocks and obstacles.
An optional press wheel or harrows close the slot to help with seed to soil contact and traps moisture.
Calibration App
Use the Duncan Seed Drill app on your phone for easy and accurate job configuration and calibration of any new or existing Duncan Renovator or Duncan Enviro drill, and take your drilling operations to the next level of productivity.
The Duncan seed drill app contains step-by-step user guides for making calibration and mechanical adjustments to your drill. Great for any new operator or if you're just a bit rusty yourself!
Calibrate multiple machines with the app, and get every operator set up with it too so they can do calibrations from their own phone.
Calibrating a ground drive drill with seed or fertiliser will display the required mechanical settings.
Connect wirelessly to a Duncan E-Drive drill to set up the sowing rates and run calibrations while you are right beside the drill.
Enviro DD30 and DD35 Specifications
| 23 Row 3m | 27 Row 3.5m | |
|---|---|---|
| Sowing width (mm) | 2875 | 3375 |
| Overall width (mm) | 3070 | 3570 |
| Length overall (mm) | 4100 | 4100 |
| Height - Working height (mm) | 2300 | 2300 |
| Height - Transport height (mm) | 2500 | 2500 |
| Unladen weight - with press wheels fitted (kg) | 2700 | 3000 |
| Row spacing (mm) | 125 | 125 |
| Hopper capacity (l per side) | 700 | 700 |