Skip to content
Industrial roasters

W30A

The Giesen W30A is a high-performance drum roaster built for industrial-scale coffee production. With up to 30 kg per batch and full control over roast variables, it delivers consistency, efficiency, and precision for large operations.

  • Up to 30 kg per batch | 150 kg per hour
  • Robust and reliable construction
  • Fully customizable
Black W30A roaster with external cyclone
Giesen W6 series.

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.

W6seriesRender
30 kg batches, zero quality loss.

Large capacity, full control

The W30A offers full control over airflow, drum speed, and heat input—ensuring high-volume roasting with craft-level precision. Built-in profiling tools and software integration make consistent results repeatable at scale.

Close up of a black W30 roaster
Repeatable roasts, less manual input.

Automate with accuracy

With automation support and real-time sensor feedback, the W30A allows you to run detailed roast profiles with minimal intervention. Designed for high reliability and consistent output, even across long production runs.

Side view of a W30A roaster with external cyclone
General specifications

Measurements
4147 x 1272 x 2518 mm

Weight
On request

Minimum batch size
15 kg

Maximum batch size
30 kg

Sound level
70 dB (A)

Chimney diameter
Ø 200 mm 2x

Ranges

Underpressure range
100 - 170 Pa
(130 Pa default)

Drum speed range
37 - 52 Hz
(47 Hz default)

Temperature setpoint range
100 - 250 °C
(200 °C default)

Certifications

Standard certifications
CE marked

Optional certifications
UL 
AGA 

Optional additions

Giesen Profiler

Destoner

Coffee Conveyor

Catalytic Emission Cleaner

Electrical specifications

Supply voltage
400V AC 

External fusing
3 x 25A

Maximum electrical power
5,1 kW

Gas specifications

Gas connection
G 1/2"

Maximum gas consumption
G20 - 6,9 m³/h
G25 / G25.3 - 6,2 m³/h
G30 - 2,4 m³/h
G31 - 1,7 m³/h

Gas inlet pressure
G20 - 25 mbar
G25 / G25.3 - 20 mbar
G30 - 30 / 37 / 50 mbar
G31 - 30 / 29 / 50 mbar

The serious stuff.

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!

Temperature control

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.

Airflow control

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.

Drumspeed control Giesen roasters feature adjustable drum speed control, empowering you to perfect your roasting process. By modifying the drum's revolutions per minute (RPM), you can balance conductive and convective heat transfer, ensuring uniform bean development.
General specifications

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)

Electrical specifications

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.

Ranges

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