GD1 gravimetric drum dosing

 GD1 Gravimetrisches Dosiergerät

GD1 Gravimetric drum dosing device

for micro injection moulding, injection moulding and extrusion
Loss-in-weight metering for 2 additives

• For shot weights from 10 to 500 g
• Precision dosing drum technology
• No scrapers
• Stepper motor with encoder

Integratable in control systems of model-based material handling


Drum dosing device GD1-3k (3 components)

  • Gravimetric loss-in-weight metering
  • High repeat accuracy
  • No wear parts

3 components, equipped with highly accurate drum dosing devices WD1


The unique drum dosing concept was developed especially for dosing free flowing materials. The special geometry of the exchangeable dosing drums and the speed adaptation allows precise metering of smallest quantities down to 0.1 g*1 per shot.

Thanks to its high precision and repeat accuracy, the drum dosing system is ideally suited for shot dosing for injection moulding and micro injection moulding as well as continuous dosing on extruders.

The use of different drum geometries allows a large dosing range from about 10 g/h to >300 kg/h*1.

Through the well thought out design, calibration and cleaning are quick and easy.

*1: Per shot, depending on bulk density and grain size


• Up to 2 components can be metered
• Gravimetric loss-in-weight metering
• Automatic adaptation to material bulk density
• Gravimetric consumption measurement
• No wear parts (scrapers)
• Rapid emptying of batch/additive station for fast colour change and material savings
• Largely resistant to vibration and impacts
• Easy cleaning without tools
• Large dosing range through variable speed and drum geometries
• Continuous discharge – low pulsation


• Dosing of up to 2 components
• Main component with gravity feed
• Intuitive operation with touch panel
• Meter
• External control module for conveying (optional)
• Modbus UDP interface
• Display can be mounted on device or in separate control cabinet
• Extrusion mode with 0-10 V input*2

*2 available soon


• External control module for vacuum conveying
• Controller can be fitted to device or externally
• Range of sizes available (small, medium, large)
• Doser housing/dosing drum in aluminium or stainless steel
• Potential-free fault alarm output
• High-temperature version*2

*2 available soon
  gd1-masse-03gd1-walze-demontagegd1-walzegd1-walzen   gd1-komplett gd1-schaufenster   GD1 Operating Panel OP7



Technische Daten

Dosing capacity 1.0 g per shot up to >300 kg/h*1

*1 : Per shot, depending on bulk density and grain size
Drum output, max.
Drum channels 6-45 mm
• 6 mm up to 1 g/s
• 12 mm up to 3 g/s
• 25 mm up to 10 g/s
• 45 mm up to 30 g/s
Stepper motor with
encoder monitoring
51,200 steps per revolution
(optionally 870.400 steps per revolution)
Blockage detection through Hall sensor
Max. no. of dosing stations 3 (2 additive, 1 free inflow)
Electrical connection 230V AC, 50Hz

System variations & dosage options:

The innovative drum dosing system makes it possible to dose both. Granules and powder.

WD1: Cyclic dosing system (metering on main flow of material)
WD2: Simultaneous, continuous dosing system (simultaneous single dosing of the components)
WD 1: or 2 on devices
WD Powder: High Precision powder dosing




WD1 – Compact version. Dosing into the material stream (1 main component, 1 Additiv)

WD2- Simultanious dosing (up to 4 drum dosing units on one foot)

WD-System on devices



Image Language Device PDF catalog


GD1 Folder GD1-DE
 Folder GD1 EN


GD1 Folder GD1-EN


GD1 Folder GD1-FR