Overview
ISO 7755-1:2013 - Hardmetal burrs - Part 1: General specifications defines the common characteristics of hardmetal (carbide) burrs across a range of styles, in both solid designs and versions with brazed shanks. It sets out the series of standard cutting diameters, shank sizes and lengths, flute direction, and the standardized designation code used to specify burrs consistently for manufacturing, purchasing and technical data exchange.
Key topics and technical requirements
- Cutting diameters and tolerances: The standard lists the series of cutting diameters used for hardmetal burrs (2, 3, 4, 6, 8, 10, 12, 16 mm) and gives related tolerance classes in Table 1.
- Shank dimensions: Specified shank diameters are 3 mm and 6 mm with tolerance h9. Agreed shank length ranges (Table 2) are:
- 3 mm shank: 20 to 35 mm
- 6 mm shank: 25 to 50 mm
- Compatibility rules: Table 3 defines permitted combinations of cutting diameter and shank diameter to ensure safe mounting and performance.
- Flute and cut direction: Unless otherwise specified, burrs have a right-hand helix and right-hand cut. Cone burrs (styles J and K) may also be straight-fluted.
- Designation code: A six-symbol code (last symbol optional) identifies burr style, cutting diameter, cutting-part length, tooth type, shank diameter and shank length. Example format from the standard:
- C 12 25 M 06 30 (Style C, 12 mm cutter, 25 mm cutting length, medium teeth, 6 mm shank, 30 mm shank length)
- Tooth types: Letter codes indicate tooth pitch/density: F (fine), M (standard/medium), C (coarse).
Applications and who uses this standard
ISO 7755-1 is useful for:
- Manufacturers of carbide burrs and rotary finishing tools to design and produce parts to accepted dimensions and tolerances.
- Tooling engineers and designers specifying burrs for deburring, profiling, grinding and material removal in metalworking and precision manufacturing.
- Purchasing and quality departments to verify supplier parts and ensure interchangeability.
- CAD/CAM and data-management teams integrating tooling data (designation codes) into inventories and CAM libraries.
- Standards bodies and technical committees aligning national practices with international tooling standards.
Related standards
- The ISO 7755 series (Parts 2–12) detail main dimensions for each burr style (A to N).
- ISO 13399 (cutting-tool data representation and exchange) is referenced for mapping ISO 7755 designations to standardized digital tool-data properties.
Keywords: ISO 7755-1:2013, hardmetal burrs, carbide burrs, cutting diameter, shank diameter, designation code, tooling standards, ISO 13399, tooth type, burr dimensions.