. Eurotools +1 2. ISO 2768-2: Geometrical Tolerances (Class "K") Geometric tolerances control the shape, orientation, and position of features. seathertechnology.com +1 Table: Geometrical Tolerance Limits (Class K) DAU Components +1 Feature Type Range (mm) Tolerance (mm) Straightness & Flatness up to 10 0.05 over 10 to 30 0.1 over 30 to 100 0.2 over 100 to 300 0.4 over 300 to 1000 0.6 Perpendicularity up to 100 0.4 over 100 to 300 0.6 over 300 to 1000 0.8 Symmetry up to 100 0.6 over 100 to 300 0.6 over 300 to 1000 0.8 Circular Run-out All ranges 0.2 Parallelism: Not listed in a separate table; it is equal to the size tolerance or the flatness/straightness tolerance, whichever is greater. Cylindricity: General tolerances for cylindricity are not specified. JLCCNC +1 3. Application Guidelines Implementation: Indicate
Tolerances in this standard are not fixed; they vary based on the of the dimension. As the size of the part increases, the allowed deviation also increases. Linear Dimensions (Class m) ıso 2768 mk
Below is a structured report template you can use to document compliance or inspection for a part under this standard. 1. General Information Part Name/Number: [Enter Part Name] Material: [Enter Material, e.g., Aluminum 6061] seathertechnology
Geometrical tolerances ensure the part's shape and orientation remain within functional limits. For class , common limits include: General Tolerances to DIN ISO 2768 and position of features.
Angular dimensions (e.g., 45° chamfer): ±1° for the "m" class.
The ISO 2768-mK standard represents a balanced approach to mechanical drafting and manufacturing. It couples the linear tolerance—suitable for standard machining—with the Coarse (K) geometric tolerance—recognizing the inherent variability in form and position during standard processes.