ISO 5611-3:2015

Overview

ISO 5611-3:2015 is an international standard specifying the design and dimensions for Type A cartridges with fastening screw holes, identified as Style G. These cartridges feature a 90° cutting edge angle (κr = 90°), optimized for side cutting during internal turning operations. They are engineered to hold indexable inserts made from hard metal, ceramics, or other cutting materials, ensuring precision and performance in machining processes.

Developed by ISO/TC 29 (Small Tools) and its subcommittee SC 9 (Tools with Defined Cutting Edges), this standard forms part of the comprehensive ISO 5611 series focused on interchangeable cartridge designs for turning tools. This third edition replaced the 1995 edition, aligning with modern manufacturing requirements and materials.

Key Topics

• Scope and Application: Applies exclusively to Type A cartridges of Style G designed for internal turning; tailored for use with inserts of various cutting materials.
• Design Specifications: Includes detailed dimensions for cartridge heights ranging from 6 mm to 25 mm, accommodating diverse insert shapes such as rhombic and triangular.
• Cutting Edge Angle: Fixed at κr = 90°, facilitating effective side cutting during internal turning tasks.
• Material Requirements: Cartridges must be made from steel with a minimum tensile strength of 1,200 N/mm² to ensure durability and operational stability.
• Attachment Methods: Cartridges include fastening screw holes for secure mounting; options include central screw fixation and supplementary clamps depending on cutting insert type and toolholder.
• Designation System: Clear coding rules define cartridge types based on retention method, insert shape, cutting edge clearance, direction of cut, height, length, and size of inserts for unambiguous identification according to ISO 5608 and ISO 1832.
• Tolerance and Dimensions: Strict tolerances apply to critical dimensions like height (h), face (f), and insert seat length (l) to maintain interchangeability and consistency.
• Adjustment Features: The standard permits manufacturers to equip cartridges with adjusting screws for fine-tuning the position within the toolholder.
• Marking and Delivery: Cartridges must be clearly marked with characteristic letters and manufacturer identification; packaging should denote the ISO 5611 standard number.

Applications

• Internal Turning Operations: Ideal for use in machine tools performing precision internal turning cuts, such as bores and recesses.
• Metalworking and Machining: Compatible with a wide range of cutting inserts, including carbide, ceramic, and other advanced materials, suitable for industries like automotive, aerospace, and general manufacturing.
• Toolholder Integration: Designed to fit standardized toolholder systems, ensuring seamless cartridge replacement and maintenance.
• Customization and Adjustment: Adjustable screws allow workshops to precisely set cutting insert position for optimized cutting performance and extended tool life.

Related Standards

• ISO 5611-1: Overview and correlation of dimensions for Type A cartridges, providing foundational guidelines for all cartridge styles.
• ISO 5608: Designation of toolholders and cartridges for indexable inserts, offering codification rules essential for part identification.
• ISO 1832: Designation of indexable inserts for cutting tools, defining insert shapes, sizes, and clearances used in cartridges.
• ISO 5611 Series (Parts 1-12): Covering other cartridge styles (F, J, K, L, etc.), enabling comprehensive standardization of turning tool systems.

By adhering to ISO 5611-3:2015, manufacturers and users benefit from standardized cartridge dimensions, enhanced compatibility with cutting inserts, consistent quality, and improved operational efficiency in internal turning applications. This standard supports global industrial interoperability and helps reduce tooling costs by facilitating interchangeability across diverse tooling systems.