Overview
ISO 10889-4:2016 specifies the dimensions, designations and complementary technical delivery conditions for tool holders with a cylindrical shank and a rectangular axial seat (Type C: C1–C4). It is part of the ISO 10889 series covering tool holders with cylindrical shank and is intended for machine tools with non-rotating tools, preferably turning machines. All dimensions and tolerances are expressed in millimetres and tolerancing follows ISO 8015 and ISO 2768 where not individually specified.
Key Topics
- Scope and types: Defines Type C tool holders (C1, C2, C3, C4) with rectangular axial seats and cylindrical shank per ISO 10889‑1.
- Dimensions & tolerances: Tabulated dimensions (millimetres) and geometrical tolerances; unspecified tolerances default to tolerance class “m” (ISO 2768‑1) and class “H” (ISO 2768‑2).
- Geometrical tolerances: Specific geometric tolerance references are provided (see figures and Figure 5 in the standard).
- Designation rules: Standardized naming format includes type, nominal diameter (d), nominal height (h), and for d = 20 mm the nominal length (l).
Examples:
- Technical delivery conditions:
- Tool holders must include a coolant outlet with adjustable direction (manufacturer’s design, e.g., ball-type nozzle).
- Tools must be adjustable at right angles to the rectangular seat.
- Option to supply a hardened contact surface - if hardened, the designation includes “H”.
- Scope of delivery includes clamping elements (design at manufacturer’s discretion).
- Flexibility: For non-standardized rectangular axial seats, the standard’s specifications are recommended as a basis.
- Data mapping: Annex A maps ISO 10889‑4 symbols to ISO 13399 cutting‑tool data representation codes for digital data exchange.
Applications
ISO 10889-4:2016 is used by:
- Tool holder manufacturers for designing and producing standardized Type C tool holders.
- Machine tool builders and OEMs specifying interfaces for turning machines and non-rotating tools.
- Procurement and quality engineers to ensure interchangeability, correct dimensions, and delivery conditions.
- CAD/CAM and data librarians for accurate component libraries and data exchange (ISO 13399 mapping).
- Maintenance and workshop personnel selecting compatible tool holders, clamping elements, or hardened contact options.
Keywords: ISO 10889-4:2016, tool holders, cylindrical shank, rectangular axial seat, Type C, turning machines, dimensions, tolerances, ISO 13399.
Related Standards
- ISO 10889-1 - Cylindrical shank, location bore - technical delivery conditions
- ISO 2768-1 / ISO 2768-2 - General tolerances (linear/angular and geometrical)
- ISO 8015 - GPS fundamentals (tolerancing principles)
- ISO 13399 - Cutting tool data representation and exchange (mapping provided in Annex A)