(Position) : Defines the "true position" or target location for a feature.
| Tolerance category | What it controls | Practical implication for coffee equipment | |-------------------|------------------|---------------------------------------------| | (straightness, flatness, roundness, cylindricity, profile of a line, profile of a surface) | The shape of a single geometric element | A grinder burr must be truly round; a roaster drum must be truly cylindrical | | Orientation (parallelism, perpendicularity, angularity) | How a feature is angled relative to a datum | The grinding wheel axle must be perfectly perpendicular to the burr mounting face | | Location (position, concentricity, symmetry) | Where a feature is located relative to a datum | The concentricity of a shaft and bearing housing determines vibration levels | | Run‑out (circular run‑out, total run‑out) | Deviation when a part is rotated about its datum axis | A rotating drum in a roaster must not wobble, otherwise beans will be unevenly heated |
What (like run-out or flatness) are you trying to solve? iso 1101 pdf coffee
: It defines "good enough" so factories don't waste money chasing impossible perfection.
is an international standard established by the International Organization for Standardization (ISO) . It defines the fundamental rules, definitions, and symbols used to indicate geometric tolerances on engineering drawings [1]. (Position) : Defines the "true position" or target
A case study of a capsule production system used by packaging manufacturers describes a solution called , which is “a solution for the control of shapes and dimensions. It is adapted to coffee capsules, and is equipped with: tactile sensors across 12 control points covering height, thickness, diameter and ovalisation, with a +/-5 μm measurement uncertainty ”. The system checks straightness, perpendicularity, parallelism, roundness, coaxiality and concentricity — exactly the characteristics defined in ISO 1101.
is the definitive international standard for Geometric Product Specifications (GPS) and geometrical tolerancing . When professionals search for "iso 1101 pdf coffee," they are typically referencing a classic, real-world case study in engineering: how precision manufacturing and tight geometric tolerances apply to the high-pressure, thermal environments of commercial and automated espresso and coffee machines. It is adapted to coffee capsules, and is
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: The filter basket at the bottom of the portafilter contains hundreds of microscopic holes. If some holes are larger than others, or if they are unevenly spaced, water will tunnel through the easiest path (channeling), ruining the espresso.