ISO 10145-2:2016

Overview

ISO 10145-2:2016 specifies the general dimensions of end mills with brazed helical hardmetal (carbide) tips that use a 7/24 taper shank. It covers two shank types - end mills for manual changing (in accordance with ISO 297) and end mills for automatic tool changers (in accordance with ISO 7388‑1). The standard applies to both right‑hand and left‑hand end mills and is independent of helix angle and number of flutes.

Key topics and requirements

• Scope and applicability
  • Dimensions apply specifically to end mills with brazed helical hardmetal tips and a 7/24 taper shank.
  • Both manual-change and automatic-tool‑changer variants are included.
• Dimensional specification
  • Primary dimensions are given graphically (Figure 1) and numerically in Table 1 (overall length, protruding length/depth of cut, cutting diameter and related sizes) for the defined shank/taper options.
  • Taper designations align with existing tool shank standards (taper no. 40 and 50 shown in the document).
• Interoperability and data mapping
  • Annex A (informative) maps ISO 10145-2 designations to preferred symbols in the ISO 13399 tooling data format (useful for digital tool data exchange and CAM/CNC systems).
• Normative references
  • ISO 297 (7/24 tapers for tool shanks for manual changing)
  • ISO 7388‑1 (tool shanks with 7/24 taper for automatic tool changers - dimensions and designation)

Applications and who uses this standard

ISO 10145-2:2016 is practical for organizations and professionals who need consistent, compatible end mills with 7/24 taper shanks:

• Cutting tool manufacturers - for designing and producing end mills with standardized shank dimensions.
• Machine tool and spindle manufacturers - to ensure toolholder and spindle compatibility.
• CNC programmers and CAM engineers - to correctly model tool geometry and protrusion limits.
• Toolroom, procurement and maintenance teams - for specifying and ordering compatible manual or automatic-change end mills.
• Quality and inspection - for verifying conformance to dimensional requirements.

Related standards

• ISO 297 - 7/24 tapers for tool shanks for manual changing (referenced for Type 1 tools)
• ISO 7388‑1 - Tool shanks with 7/24 taper for automatic tool changers (referenced for Type 2 tools)
• ISO 13399 - Cutting tool data representation; Annex A of ISO 10145-2 maps ISO 10145 identifiers to ISO 13399 properties for digital tool data exchange

Keywords: ISO 10145-2, end mills, brazed helical hardmetal tips, 7/24 taper shank, dimensions, ISO 297, ISO 7388‑1, ISO 13399, tool shank, automatic tool changer.