Model DH 812 - Flexible Precision Wood Chipper
From Shredding - Chipping
Whenever the efficient production of high-quality wood chips is required, Doppstadt precision chippers of the DH series are always the first choice. They are used for the cultivation of woods and forest stands and for the utilization of the residual wood, which is transformed into energy-saving quality products. For mobile use, the DOPPSTADT DH 812 can be hooked up to a tractor in any location.
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The machine operator controls the chipper directly...
The machine operator controls the chipper directly from the tractor cab. A forwards and reverse running transverse in-feed system transports wood via an apron conveyor to a floating-mounted in-feed rotor. A full-steel chipping drum rotates mounted in robust steel frames. The special arrangement of the chipping knives guarantees a low-vibration with all kinds of wood and an optimum structure of the chips.
The chip size can quickly be adjusted in the machine by choosing the suitable screening baskets according to the requirements. The chipped product is discharged by means of an integrated impeller blower.
A PTO coupling drives the entire unit at 1000 revolutions per minute. The machine is designed for transmission power of between 250kW (340hp) and up to 370kW (500hp). The capacity is designed to cope with the demands of continuous service. Reliable components manufacturerd by major suppliers of hydraulic systems, controls and safety systems on the basis of a thought-out construction guarantee very quick maintenance and short downtimes during operation.
The great number of options for operation, adjustment and equipment permits to meet any demand on the final product and the economic efficiency. All the DOPPSTADT machines stand out for their easy operation and high mobility.
Technical Data
Measurements
Chassis central-axle trailer chassis with 2 axles for 50 km/h (31 mph) or 80 km/h (50mph), with ABS
Total Weight 41,888 lb
Drive
Engine Drive with PTO
Engine Nominal Power from 250 kW (340 hp) to max. 370 kW (500 hp)
Equipment
Additional Equipment remote control, damping facility, discharge arm lighting
Chipping drum
Chipping Drum Width 1.200 mm
Chipping Drum Diameter 1.000 mm
Chipping Drum Knifes 6 pcs., arranged around the perimeter
Chipping Drum Speed 640 rpm (depending on engine speed)
Maximum log diameter
Maximum Log Diameter Hard Wood 480 mm
Maximum Log Diameter Soft Wood 600 mm
Applications
The precision chippers of the DOPPSTADT DH series process waste wood, branches, log and root timber to different sizes of wood chips.
Benefits
- chipping of logs up to 600 mm (2') in diameter
- PTO drive by the tractor
- forwards and reverse running transverse in-feed system with apron conveyor
- load-sensing material feed to the chipping drum
- the size of the final product can be regulated by choosing different feeding speeds or changing the screening segments
- solid full-steel construction of the rotor and chipping knives
- the chipping knives can be re-sharpened
- maintenance and adjustment from outside the machine
- the precision chipper is ready to go in no time
- Large, smooth-running doors and centralized lubrication points facilitate maintenance
- integrated discharge rotor with hydraulically foldable and adjustable discharge arm
- many available options to meet various requirements
- possibility of combination with other Doppstadt products
- Easy one-man operation (remote control of all main functions), the machine can be moved by the tractor or the wheel loader grab and slip-on coupling
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