RUD ECO DOS substrate feeder

Energy-saving solids dosing system | Durable, reliable and safe | customisable and extensible

For your plant to be efficiently and economically operated, you need a high bio-gas yield with minimum power consumption. With these key functions and its special design, the ECO-DOS substrate feeder can indeed support you in 100% conveying and degrading manure. The difficult substrate is transferred finely dosed to the screw system.

The best components for the least wear

Due to its high resistance to weathering effects, the ECO-DOS 2.0 is ideally suited to freestanding systems. The scrapers run on special stainless steel rails, thus keeping the dosing system abrasion and wear low. Further features contributing to minimising wear are the exchangeable blades and pocket wheels.

Advantages of the ECO-DOS

Efficient and sustainable conveying through the latest technology from RUD

Minimum wear
• Particularly weather resistant wood (renewable resource)
• High strength properties
• Due to high durability in water or very wet underground perfectly suited for detached facilities
• Due to high abrasion resistance (minimum wear on the scraper floor)
• Calibrated double-strand round steel chain enables smooth run of the conveyor
• Drive and reversion through pocket wheels

No problem with corrosion

• Special acid resistant sidewall protection on PE basis
• High toughness
• Good weather-resistance (very low water absorption)
• Temperature-resistant
• Sidewall plates replaceable in case of damage
• Minimum wear

Improved fermentation process

The ripper and reel rollers of the ECO-DOS are specially designed for conveying difficult substrates such as solid manure, grass silage and long hay. The rollers have been designed to be particularly wear-resistant and sturdy.

• A speed of 85 rpm ensures the finest cutting and degrading results
• The cutting tools are standardised and interchangeable
• Maintenance is possible without emptying storage containers
• The reels convey the substrate to the centre, thereby relieving bearings

Interchangeable double decoiler

Innovativedecoiler technology for easy processing of the most difficult substrates.

Energy-saving drive

• Improved energy balance thanks to efficient scraper floor conveyor technology
• Substrate conveyance with only 1.1 kW
• Approx. 0.3 kW power requirement per substrate ton

Planetary gear

High torgue by planetary gear.



Wooden floor

• Renewable raw material
• No corrosion
• Self-lubrication property
• Simple, inexpensive maintenance

No problem with corrosion

• Special acid-resistant sidewall protection
• High toughness
• Weatherproof wooden floor
• Temperature resistant
• Single plates can be replaced if damaged

Chain- & reversion technology

High-quality chain and reversion technology "Made in Germany" increases the service life of the substrate feeder ECO-DOS.

Round steel chain

• Special high-alloyed round steel chain suitable for use in the biogas industry
• Break-proof as a result of special heat treatment by market leader RUD; minimum wear guaranteed
• Calibrated and paired chain strands as a result of decades of experience in the chain industry

Easy installation of the ECO-DOS

Modular structure and simple assembly of the feeder / solid matter feeder / substrate dispenser for biogas plants.


• Individual solutions through a modular system
• Realizable sizes of 14–50 m³
• Delivery in assembled condition


Accurate dosing

• Weatherproof load cells
• Weighing computer incl. weather protection hood
• Optional LED large display
• Comfortable electrical control with pulse and weight-based dosing
• Scales compatible with any controller

Applications of the ECO-DOS

The RUD ECO-DOS is a reliable partner for biogas solids dosing / biogas introduction of various substrates:

• Promotion of difficult substrates such as:
    → corn silage
    → GPS
    → solid manure
    → poultry manure
• For biogas plants, such as manure and long grass
• Used as a chain scraper conveyor for garbage and waste

Product variants and technical data of the ECO-DOS

The RUD ECO-DOS 2.0 is available in various sizes. It differs in filling volume and external dimensions and offers the optimum solution for every requirement.

In order to make your ECO-DOS as individual as possible, you have the choice to assemble your doser from 2.5 m and 4.5 m middle parts.

In addition, you have the opportunity to expand the volume by means of space-saving and cost-effective.

CRATOS Download Center

CRATOS Download Center


Contact form

Contact form




ECO-DOS brochure

ECO-DOS brochure