ISO 9448-11:2013

Overview

ISO 9448-11:2013 is an international standard published by ISO that defines the specifications for tools for pressing, specifically focusing on guide bushes of form F, which are flanged ball cage bushes, type 2. These components are crucial in the manufacture and operation of press tools, where precision guiding is necessary for reliable and consistent performance.

This standard outlines the main dimensions and tolerances (expressed in millimetres) required for these guide bushes, and provides guidance on appropriate materials, hardness levels, and product designation. The guide bushes covered by ISO 9448-11:2013 are designed to be mounted in the clamp plate of press tools using a transition fit and secured by guide clamps.

Key Topics

• Dimensions and Tolerances: The standard specifies detailed dimensions for type 2 flanged ball cage bushes, including diameters, lengths, and flange thickness, ensuring compatibility and interchangeability. Surface roughness and precision tolerances for internal diameters are highlighted, facilitating the right fit and function.

• Material and Hardness: While the choice of material is left to the manufacturer’s discretion, the hardness requirement is clearly stated as (63 ± 1) HRC, ensuring durability and resistance to wear in demanding press tool environments.

• Designation System: A standardized method for designating guide bushes is defined, enabling clear identification and communication. Each bush is labeled by its form, guiding diameter, and length, e.g., Guide bush ISO 9448-11 F - 25 × 25.

• Mounting and Usage: The guide bushes are intended for installation in the clamp plate of press tools with a transition fit and fixed by guide clamps. This ensures stable positioning and proper preloading of the ball cage mechanism.

Applications

ISO 9448-11:2013 guide bushes are predominantly used in:

• Press tools and moulding equipment: Ensuring precise linear guidance of moving components during pressing and forming operations.
• Manufacturing and metalworking industries: Where repeatable, accurate movement is necessary to maintain quality and efficiency in tool operation.
• Automation and tooling systems: Providing standardized parts that streamline design, maintenance, and replacement processes.
• Heavy-duty industrial presses: Enhancing the lifespan and performance of tooling by offering high hardness and well-defined tolerances on wear components.

Using standardized guide bushes reduces downtime, improves alignment accuracy, and extends tool life in various industrial settings.

Related Standards

• ISO 9448 series: This standard is part 11 of the ISO 9448 series covering various forms and types of guide bushes for pressing tools, including:

  • Part 1: General Forms
  • Part 7: Form F, ball cage bushes, flanged, type 1
  • Part 9: Form B, ball cage bushes, plain, type 2
  • Other parts addressing different forms (A, B, C, D, E, G) and types (1 and 2)

• ISO 6508-1: Metallic materials – Rockwell hardness test – Part 1: Test method, referenced for hardness testing applied in guide bush material specifications.

Keywords

Press tools standard, guide bushes dimensions, ball cage bushes, flanged bushes, ISO 9448-11, tooling components, industrial pressing guide, hardness specification, tooling tolerances, clamp plate mounting.

Adoption of ISO 9448-11:2013 ensures the use of high-quality, precisely specified guide bushes that conform to globally recognized manufacturing standards, promoting interoperability, reliability, and longevity in press tool components.