ISO 5611-5:2015

Overview

ISO 5611-5:2015 specifies cartridges, type A, style K for indexable inserts. It applies to cartridges with hole(s) for fastening screw(s) and a cutting-edge angle κr = 75° for end cutting. These cartridges are intended for use with indexable inserts made of hard metal, ceramic or other cutting materials and are primarily mounted for internal turning operations.

Key topics and technical requirements

• Scope and purpose: Defines the form, dimensions and designation rules for cartridges type A - style K used in internal turning.
• Dimensions and tolerances: Detailed dimensional tables (Table 1 and figures) cover cartridge heights (e.g., h = 6, 8, 10, 12, 16, 20, 25 mm), shank/edge lengths and fastening details. Specific fastening screw thread sizes and hole dimensions are given per height in the standard.
• Material: Cartridges shall be made of steel with a tensile strength of at least 1 200 N/mm².
• Methods of holding: Defines holding methods and letter-symbols (per ISO 5608) - top clamping, screw clamping through hole, and hole clamping - with variants for insert normal clearance (α = 0°, 7°, 11°).
• Corner radius and inserts: Specifies compatible insert cutting edge lengths and corner radii; where non‑standard radii are used, dimensions are determined per ISO 5611‑1.
• Adjustment and delivery: Manufacturer may provide an optional adjusting screw for f‑direction adjustment. Cartridges are delivered with complete clamping devices and adjusting screws.
• Designation and marking: Provides a structured cartridge designation format (e.g., Cartridge ISO 5611‑5 – CSKPR 12CA – 12) and marking requirements including manufacturer identification and inclusion of ISO 5611 on packaging.

Applications and who uses it

• Primary application: Internal turning tooling for lathes and CNC machines using indexable inserts (hard metal, ceramic, etc.).
• Typical users:
  • Tool designers and tooling engineers specifying cartridges for internal turning
  • Cartridge and toolholder manufacturers ensuring interchangeability and compliance
  • CNC programmers and machining engineers selecting tooling for process planning
  • Purchasing and quality departments verifying component conformity and supplier specifications
• Practical benefits: Ensures dimensional interchangeability, consistent clamping/holding methods, improved supply-chain compatibility and reliable tool performance for internal turning operations.

Related standards

• ISO 5611 (series) - Parts 1–12 (general survey and other styles)
• ISO 5611‑1 - General survey, correlation and determination of dimensions
• ISO 5608 - Designation for turning and copying tool holders and cartridges
• ISO 1832 - Designation for indexable inserts

Keywords: ISO 5611-5:2015, cartridges type A, style K, indexable inserts, internal turning, cutting edge angle 75°, cartridge dimensions, clamping methods, ISO 5608, ISO 1832.