Nucleus Link Sample Roaster

by Nucleus


Link - Connecting the coffee community with modern technology.

The Link is the perfect companion for anyone looking to roast small batches of beans with an accurate and honest expression.

No prior experience necessary

Customise your roast to your liking, whether you prefer simplicity or complexity, with a wide range of profiles to choose from.

Connect via the Link app

Through the LINK App, you can utilise density tube integration, select the desired process and variety, and rely on your mobile device to aid you in custom-built profiling as you navigate the roasting experience.

Completely portable

The travel case is military-grade and water-resistant, making it the perfect travel companion that guarantees true expression, allowing you to assess samples anytime, anywhere.

An advanced approach to temperature application

The Link brings precision and consistency to the roasting experience. Each roast starts at room temperature, with the internal bean temperature matching the ambient roast temperature right from the beginning. This makes for a more even roast, lowers sample CO₂ levels and allows you to taste the full potential of your coffee much earlier.

Fan speed calibration

Select the most appropriate setting for your current location, ensuring that the core profiling system operates smoothly and efficiently, regardless of external conditions or elevation.

Monitor your roast in real time

Link Studio software offers a comprehensive selection of more than 205 core profiles, along with advanced live tracking technology. This powerful combination empowers you with the flexibility to customise your profile preferences and effortlessly monitor and document the modifications throughout the entire roasting process. With Link Studio, you can truly take control of your roasting experience.


  • Roasting system: hot air flow (fluid bed)
  • Adjustment options: Bean temperature & strength of air flow
  • Automation: PID based on a pre-set temperature curve
  • Temperature measurement: open bean sensor (naked thermocouple) 
  • Batch size: 50-100g green coffee
  • Roasting time (typical): 10 min.
  • Cooling time (typical): 4 min.
  • Roasting profiles:
    - Scope of delivery 41 roasting profiles with 5 possible settings each for the development time
    - Density meter and app for determining the appropriate profile
    - Unlimited number of own roasting profiles possible
    - Easy sharing of roasting profiles with other users (e.g. via email, forums,...)
  • Country of production: Handmade in New Zealand

Software and app

Software: Nucleus Studio

  • The device can be used with or without the software, 41 high-quality roasting profiles are included, each with 5 different degrees of development
  • The software offers three options: 
    1. life recording of the roasting
    2. analysis and documentation of the roasts
    3. creating or modifying roasting profiles and parameters in advance
  • Free download:
  • Platforms: Windows and Mac


App: Nucleus Link

  • The app helps you choose the right settings
  • The app offers two options:
    1. determination of the calibration according to the current altitude
    2. determination of the roasting profile according to the density and preparation of the beans
  • Free download in App Store, resp. Google Play Store
  • Platforms: iOS and Android

Technical data

  • Dimensions basic unit: 125mm x 125mm x 280mm WxDxH
  • Height with chaff collection container: 430mm
  • Weight: 4,1 kg
  • Power supply: 220-240V
    on request also the 110V version with US plug
  • Power: 1400 W
  • Materials:
    - Housing: powder-coated steel
    - Plastic fittings: Nylon PA66
    - Roasting chamber: Aluminium

Note: On request, we can also supply the 110V version if the unit is to be taken to countries of origin with 110V mains.

What's included?

  • Nucleus Link coffee roaster
  • Chaff collector
  • High-quality shock-absorbant and waterproof case
  • Tin for determining the density
    (a conventional kitchen scale or coffee scale is also necessary but not included)
  • High-quality dosing cup
  • Bowl for coffee
  • Connection cable (USB-C / USB-A)

Free Shipping

We offer local free shipping for any purchase of coffee brands or/ and any orders of coffee products made within Hong Kong and Macau over HK $200.
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Game Leader

Not just another cafe! Hazel & Hershey does more than play the field. We source . We roast . We serve . We distribute . We are a one-stop coffee solution provider, a coffee expert who committed to making long-lasting positive change in the coffee industry.
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The Distributor

Recognised as an authorised distributor and/or reseller of your favourite coffee tools
e.g. Acaia, Comandante, Kalita, Delter Press Coffee, La Marzocco, Urnex and VST and more.