The Rosco Hand Grinder is a manually operated coffee grinder designed to grind roasted coffee beans. It is a precision instrument capable of producing extremely accurate, consistent and repeatable grinds ranging from coarse plunger style to the finest Turkish grind. The Rosco uses a 38mm conical burr set which provides a balance between grinding speed and ease of operation. Also, the relatively slow cutting action of the Rosco ensures that heat and fines (fine coffee dust) are minimised.
The engineering and workmanship of the Rosco is unmatched. Every manufactured metal component is precision machined from brass stock, and even the gripping sleeve is machined from high quality plastic rod. Ball bearings are used throughout to ensure precision rotation, and a thrust ball bearing assembly ensures consistently smooth and accurate operation under grinding load.
All components that effect concentricity or alignment of the cutting mechanism are machined in one setup. This ensures correct cutter alignment, and the design ensures that the alignment cannot be affected from disassembly.
Very fine and repeatable grind size settings are crucial for those seeking the highest quality espresso. The Rosco's grind size adjustment is extremely accurate. Adjustments as small as 0.01mm are easily achieved with the Rosco Hand Grinder, and the same setting can be regained with confidence after using a previous setting or even after completely disassembling the grinder.
The Rosco Hand Grinder is an integral part of the Portaspresso Specialty Coffee System, which also includes the Rossa Hand and Air Espresso models. The Rossa's filter head screws into the Rosco and coffee is ground directly into the basket. The grinding process effectively pre-tamps the coffee as it is ground. This minimises mess and wasted or discarded coffee.
Even though the Rosco has been specifically designed to work in conjunction with the Rossa Hand and Air Espresso models, the supplied cup fits into the Rosco to enable you to capture ground coffee for use in any coffee making device. The common and critical factor that applies to all extraction methods is the need to use fresh ground coffee. The Rosco enables you to precision grind your favourite coffee beans as required to ensure the finest coffee experience.
Ball bearings fitted to ensure easy operation
Thrust ball bearing fitted below spindle drive head
The 38mm conical cutter produces exceptional grind quality
Rosco fitted with standard filter head
Rosco fitted with naked filter head
Rosco fitted with cup to collect ground coffee for use in other brewing apparatus
As removed from the Rosco Hand Grinder in the pre-tamped condition