Overview
ISO 7755-7:2013 defines the main cutting-part dimensions for hardmetal (carbide) burrs of arch shape with a pointed nose - designated style G. Part of the ISO 7755 series for hardmetal burrs, this second edition updates dimensional specifications used by manufacturers and users of rotary burrs. The document focuses on the cutting geometry of arch pointed‑nose burrs while referring to ISO 7755‑1 for tolerances, shank dimensions and designation rules.
Key topics and technical requirements
- Scope: Specifies the principal dimensions of the cutting part for arch pointed‑nose hardmetal burrs (style G).
- Dimension table: Provides standard combinations of cutting diameter (d) and cutting edge length (l). Typical entries in Table 1 include diameters and associated cut lengths (for example: d = 3 mm → l = 13 mm; d = 6 mm → l = 18 mm; d = 10 mm → l = 20 mm; d = 12 mm → l = 25 mm). These cut lengths may include a cylindrical portion.
- Profile note: The cutting profile is formed by a radius tangent to the larger diameter.
- Tolerances and related parameters: Tolerances on cutting diameter, helix direction and cut, and shank diameter/length are not repeated here - they are specified in ISO 7755‑1 (General specifications).
- Data mapping: Annex A provides the relationship between ISO 7755‑7 designations and preferred symbols in the ISO 13399 series (e.g., cutting diameter → DC, cutting edge length → L), supporting digital tool data exchange.
Applications
- Standardizes dimensional data for arch pointed‑nose carbide burrs used in rotary tooling for shaping, profiling, finishing and deburring operations.
- Enables consistent product cataloguing, supplier specification and quality control for tooling manufacturers and distributors.
- Supports CAD/CAM tool libraries and digital tool data systems via ISO 13399 mapping, improving interoperability for CNC programming and tooling management.
Who would use this standard
- Hardmetal (carbide) burr manufacturers and product designers specifying style G burrs.
- Tooling engineers, quality assurance and procurement teams requiring standardized dimensions.
- CNC programmers and workshop managers who need reliable tool data for setup and toolpath planning.
- Standards and compliance professionals coordinating product documentation and tool data exchange.
Related standards
- ISO 7755‑1 - Hardmetal burrs - Part 1: General specifications (tolerances, shank dimensions, designation)
- ISO 13399 series - Cutting tool data representation and exchange (digital tool properties)
- Other parts of ISO 7755 covering different burr shapes (Parts 2–12).
Keywords: ISO 7755-7, hardmetal burrs, arch pointed-nose burrs, style G, cutting diameter, cutting edge length, ISO 13399, carbide burrs, tooling standards, rotary burrs.