Every roastery is different. Our Custom Silos are engineered to match your layout, capacity, and workflow — not the other way around. From intake to packaging, each system is tailored for smooth bean flow, easy access, and full integration with your roasting and transport equipment.
Custom Silos
If you’re planning or running a large roasting operation, your layout and capacity needs are unique. Our Custom Silos are designed from the ground up to match your space, volume, and workflow, from intake to packaging. We collaborate with you on every detail, from transport systems to integration with roasting and packaging lines.
- Fully custom dimensions, layout, and segments
- Integration with existing or planned systems
- Materials built for heavy, continuous use

Up to 24 kg / h.
With a 6-kilo capacity per batch and up to 24 kilos per hour, Giesen W6 series roasters deliver efficiency and consistency. Perfectly balanced for professionals who demand both quality and volume.
The ultimate centerpiece for your coffee shop. Designed to perfection, it offers the flexibility of full-control manual roasting alongside the convenience of fully automatic roasting. Handcrafted in the Netherlands and shipped worldwide.


Scalable and strong
We build for long-term performance. Custom Silos use high-grade, food-safe materials and are designed for continuous operation at large volumes. Whether you’re expanding or building from scratch, your silo system can grow with your production, without compromising reliability or quality.

1 segment
- Height: 3050 mm
- Diameter: 950 mm
2 segments
- Height: 4025 mm
- Diameter: 950 mm
3 segments
- Height: 5000 mm
- Diameter: 950 mm
1 segment
- Green coffee capacity: 600 kg
- Roasted coffee capacity: 315 kg
- Capacity: 0,88 m³ / 885 liters
2 segments
- Green coffee capacity: 1065 kg
- Roasted coffee capacity: 560 kg
- Capacity: 1,57 m³ / 1570 liters
3 segments
- Green coffee capacity: 1530 kg
- Roasted coffee capacity: 805 kg
- Capacity: 2,25 m³ / 2255 liters
Technical data.
If you need any further technical information that you can't find on this page, please contact us. We will be happy to help you!
Giesen roasters combine advanced temperature control with cutting-edge automation, ensuring consistency and ease in every roast. With features like automatic mode and burner percentage control, you have the tools to master your craft and achieve unparalleled results.
Giesen roasters feature advanced airflow control, allowing you to fine-tune the roasting environment to achieve your desired flavor profiles. By adjusting the underpressure settings, you can influence the heat transfer and development of your beans.
Measurements
W6A - 1427 (L) x 723 (W) x 1705 (H)
W6E - 1410 (L) x 723 (W) x 1705 (H)
W6A Pro - 1623 (L) x 2414 (W) x 1944 (H)
Weights
W6A - 485 kg (roaster only)
W6E - 496 kg (roaster only)
W6A Pro - 600 kg (roaster only)
Minimum batch size
W6A - 3 kg
W6E - 3 kg
W6A Pro - 3,5 kg
Maximum batch size
W6A - 6 kg
W6E - 6 kg
W6A Pro - 7 kg
Sound level
W6A - 70 dB (A)
W6E - 70 dB (A)
W6A Pro - 70 dB (A)
Supply voltage
W6A - 230V AC (1L+N+PE)
W6E - 400 V AC (3L+N+PE)
W6A Pro - 230V AC (1L+N+PE)
External fusing
W6A - 1 x 16A
W6E - 3 x 32A
W6A Pro - 1 x 16A
Max. electrical power
W6A - 1,7 kW
W6E - 17 kW
W6A Pro - 2,5 kW
Keep in mind that this is the absolute maximum power consumption. Actual average usage will be much lower.
Underpressure range
80 - 150 Pa (min. - max.)
Default value: 110 Pa
Drum speed range
36 - 51 Hz (min. - max.)
Default value: 46 Hz
Temperature setpoint range
100 - 250 °C (min. - max.)
Default value: 200 °C