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Key Mk.1 Bean Feeder

Dial in your feed rate
Regular price $18 USD $
Regular price USD Sale price $18 USD


Say hello to the KEY Bean Feeder. With two independently adjustable feed apertures, you can match your feed rate to your bean size and personal preference. An industry first, this might just be the last variable in the pursuit of coffee grinding perfection.

note: not needed for KEY Mk 2, as feature is integral to the product. This is just for first generation KEY.


Made from the same food-safe and antistatic black ABS blend we use for our wipers. Surfaces are smooth for easy wipe clean.


  • Works with all KEY and HG-2 grinders.
  • Works with all known bean varietals (Mokka to Pacamara).

Included in Package

  • Outside Ring Assembly
  • Inside Ring Assembly
  • Assembly Rubber Band


Available for immediate shipment from our Taipei warehouse.

Light Roasts

If you're using an uber-light peaberry, have no fear as a reduced feed rate means a reduced load on the motor.

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Great coffee is a combination of art, chemistry, and engineering. We're here to help pinpoint and control the variables.

Technical Specifications & Details


Installing the Bean Feeder

  • Verify you have all the included parts
  • Use Rubber Band to lift up and hold the funnel
  • Connect and push in the outer ring
  • Connect and push in the inner ring
  • Adjust apertures and test grind
  • Repeat until desired results achieved