The Giesen W140A Pro is the largest coffee roaster in the Giesen catalogue—built for industrial-scale operations that demand uncompromising performance. Every element is designed for long-term reliability under heavy use. As the centerpiece of any large roasting facility, the W140A Pro combines precision engineering with advanced automation to deliver consistent, high-quality results at scale.
W140A Pro
- Up to 140 kg per batch | 700 kg per hour
- Built for industrial-scale operations
- The roasting plant centerpiece

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.

Exceptional capacity for industrial roasting
Designed for large-scale production, the W140A Pro handles batch sizes up to 140 kg, achieving an impressive hourly output of 700 kg. This exceptional capacity ensures that high-volume roasteries can meet substantial demand without compromising on quality.

The centerpiece of your roasting facility
The W140A Pro embodies our commitment to innovation and quality. Its fully automated system manages the entire roasting process minimizing manual intervention and maximizing throughput. The roaster's robust construction and advanced features make it the focal point of any industrial roasting plant, ensuring consistent, high-quality results.

Measurements
7601 x 4000 x 3521 mm
Weight
On request
Minimum batch size
70 kg
Maximum batch size
140 kg
Sound level
70 dB (A)
Chimney diameter
Ø 250 mm roast fan
Ø 350 mm cooling fan
Underpressure range
80 - 150 Pa
Drum speed range
40 - 55 Hz
Temperature setpoint range
100 - 250 °C
Standard certifications
CE marked
Optional certifications
AGA
Destoner
Coffee Conveyor
Pellet Press
Catalytic Emission Cleaner
Supply voltage
400V AC
External fusing
3 x 63A
Maximum electrical power
27,6 kW
Gas connection
G 1" propane gas
G 3/4" natural gas
Maximum gas consumption
G20 - 40 m³/h
G25 / G25.3 - 40 m³/h
G30 - 15,6 m³/h
G31 - 15,6 m³/h
Gas inlet pressure
G20 - 25 mbar
G25 / G25.3 - 20 mbar
G30 - 30 / 37 / 50 mbar
G31 - 30 / 29 / 50 mbar
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