Overview
ISO 10911:2017 establishes the dimensional requirements for solid hardmetal end mills with cylindrical shanks. This third edition supersedes the 2010 edition and clarifies the relationship between the designations used in this document and the ISO 13399 series (see Annex A). The standard covers plain cylindrical shanks and notes applicability to flatted cylindrical shanks in accordance with ISO 3338-2.
Key Topics
- Scope and purpose: Specifies overall lengths, cutting lengths and shank diameters for solid hardmetal end mills to support consistent manufacturing and interchangeability.
- Dimensions and figures: Dimensions are presented graphically (Figure 1) and in tabular form (Table 1). Table 1 provides dimensional ranges and related tolerances for common end mill sizes (two-flute examples are included).
- Tolerances: The document notes tolerance classes and specific dimensional tolerances for short and long cutting parts. Tolerance references and notes appear alongside tables and figures.
- Centre cutting rules: The standard mandates that two-flute end mills be centre-cutting (slot drills). End mills with three or more flutes may be centre-cutting, as specified.
- Cross-references: Annex A is informative and maps the designations used in this standard to preferred symbols in the ISO 13399 series for tool data representation.
Applications
ISO 10911:2017 is primarily used by:
- Tool manufacturers to design and produce solid hardmetal end mills to standardized dimensions and tolerances.
- CNC programmers and machinists for reliable selection of end mills that fit tool holders and meet expected cutting lengths.
- Quality and inspection teams to verify conformity of produced tools against published dimensions and tolerance classes.
- Purchasing and sourcing for specifying standardized tooling to ensure interchangeability across suppliers.
Benefits include improved manufacturing consistency, simplified tooling selection, and clearer data exchange when combined with ISO 13399 tool description conventions.
Related Standards
- ISO 3338-1 - dimensional characteristics of plain cylindrical shanks (referenced for shank dimensions and tolerances).
- ISO 3338-2 - dimensional characteristics of flatted cylindrical shanks (Table 1 dimensions also apply to flatted shanks per this part).
- ISO 13399 series - provides preferred symbols and a data model for cutting tool representation; Annex A in ISO 10911:2017 maps the two standards for interoperability.
For implementation, consult the full ISO 10911:2017 document for figures, Table 1 numeric values and the specific tolerance notes that apply to each size class.