Overview
ISO 5609-6:2012 defines the characteristics of tool holders for internal turning with cylindrical shank - Style Q. Style Q tool holders feature a reduced shank and a cutting edge angle κ = 107.5° and are primarily intended for indexable inserts (hardmetal/carbide, ceramic or other cutting materials) mounted by clamping for internal turning operations. The standard covers dimensions, designation, materials, design options and marking to ensure interchangeability and clear specification.
Key Topics
- Dimensions and geometry
- Preferred dimensions and symbols are aligned with ISO 5609‑1 and ISO 13399.
- Tabulated sizes (Tables 1–3) give values for shank diameter, overall length, cutting-edge length, minimum working lengths f and l, and insert thickness s.
- Cutting edge and insert data
- Style Q is for rhombic indexable inserts (shapes D and V) with specified cutting-edge lengths and corner radii.
- Nominal corner radii references: ~0.4 mm and ~0.8 mm (converted imperial values 0.397 mm and 0.794 mm); other radii determined per ISO 5609‑1.
- Materials
- Acceptable materials include high‑strength steel (≥ 1 000 N/mm² tensile), brazed hardmetal heads, or heavy metal tools; final choice left to manufacturer.
- Design and mounting
- Options with/without lubrication holes and antivibration devices.
- Standard mounting types follow the tables; alternative mountings possible by agreement.
- Designation and marking
- Formal designation includes reference to ISO 5609‑6 plus symbols for diameter, length, insert shape, style (Q), clearance, hand (R/L), and cutting edge length (examples given in the standard).
- Delivered complete with clamping device but without indexable inserts.
- Marking must include letter symbol and manufacturer name; packaging should reference ISO 5609‑6.
Applications
- Ensures consistent specification and interchangeability of internal turning tool holders used in:
- CNC lathes and boring machines for internal bore finishing and roughing.
- Tooling design, inventory management and purchasing of indexable insert systems.
- CAD/CAM tool libraries and tooling data exchange where ISO 13399 naming conventions apply.
- Useful for tooling manufacturers, machine shops, production engineers, procurement teams and standards/quality engineers specifying or validating tooling.
Who should use this standard
- Tool designers and manufacturers producing cylindrical-shank internal turning holders.
- Shop floor engineers and machinists selecting compatible holders and inserts.
- Purchasing and quality departments that require unambiguous tool designation and conformity.
Related standards
- ISO 5609-1 (designation, styles, dimensions and corrections)
- ISO 5609 (Parts 1–5 covering other styles)
- ISO 1832 (indexable insert designation)
- ISO 13399 (cutting tool data representation and exchange)
Keywords: ISO 5609-6, tool holders for internal turning, style Q, indexable inserts, cylindrical shank, cutting edge angle 107.5°, internal turning tool holders, tool designation, tooling standards.