Nucleus Link – the sample roaster that roasts the same everywhere
Whether in the roastery's lab or out in the middle of a farm at 1'800 meters above sea level: the Nucleus Link delivers a consistent roast, regardless of external conditions. That's exactly what this high-precision convection roaster is built for – as a shared language between coffee producers and roasteries, and as a reliable companion on farm visits. It's delivered in a shock-resistant, waterproof case, along with accessories to determine bean density.
The principle: a hot airstream (fluid bed), an open bean sensor that measures temperature directly at the bean, and a PID that guides the roast along a preset temperature curve. The companion app determines calibration based on your current altitude and suggests the right profile based on density and processing – so roasts stay comparable no matter where you run them. Over 400 roast profiles across four categories (cupping, filter, espresso, omniroast) come pre-loaded, and you can create unlimited profiles of your own. How you roast in the end is your call – what counts is that the coffee tastes good to you. That's our view, one of many.
At a glance
| Roasting system |
Hot airstream (fluid bed), convection; sample roaster |
| Batch size |
50–100 g green coffee |
| Roast time / cooling time |
typically 10 min / 4 min |
| Control |
Bean temperature & airflow strength |
| Automation |
PID along a preset temperature curve |
| Temperature measurement |
Open bean sensor (naked thermocouple) |
| Roast profiles |
Over 400 profiles across 4 categories (cupping, filter, espresso, omniroast); unlimited custom profiles, shareable as files |
| App |
Nucleus Link (iOS, Android): calibration by altitude, profile selection by density & processing |
| Software |
Free Nucleus Studio (Windows, Mac), live recording; wired connection (USB-C/USB-A) |
| Power |
1400 W, 220–240 V (110 V version on request) |
| Base unit dimensions (W×D×H) |
125 × 125 × 280 mm; height with chaff collector 430 mm |
| Weight |
4,1 kg |
| Material |
Housing powder-coated steel, roasting chamber aluminum, fittings nylon PA66 |
| Origin |
Handmade in New Zealand |
| What's included |
Nucleus Link, chaff collector, shock-resistant waterproof case, density-testing container, dosing cup, tray, connection cable |
Who the Nucleus Link is for
For anyone who needs reproducible sample roasts – from the growing country to the roastery – and just as much for quality-minded home roasters who like precision. For density testing, you use the included container together with a standard kitchen or coffee scale (not included). If you'd rather get your beans already roasted, you'll find them in our coffee beans; the matching grinder is in our coffee grinders. Financing is possible.
Frequently asked questions
How much does the Nucleus Link roast per batch?
50 to 100 g of green coffee, typically in around 10 minutes with about 4 minutes of cooling time.
What is the app for?
The Nucleus Link app (iOS, Android) determines calibration based on your current altitude and suggests the right roast profile based on the beans' density and processing – for comparable results anywhere.
Is there a 110 V version?
Yes, on request. The standard version runs on 220–240 V; a 110 V version with a US plug is available on request, for example for use in origin countries with a 110 V grid.
Can I see the Nucleus Link before buying?
Our showrooms in Bern (Gerberngasse 44) and Zurich (Hagenholzstrasse 50b) show a wide selection, but not our entire range – the display changes. Drop us a quick line at [email protected] before your visit, and we will check whether the machine you have in mind is currently on display.
