ISO 9448-6:2013

Overview

ISO 9448-6:2013 - Tools for pressing - Guide bushes - Part 6: Form E, gliding bushes, flanged, type 1 defines standardized dimensions, tolerances and designation for flanged gliding guide bushes (form E, type 1) used in press tools. The standard specifies metric main dimensions and tolerances, mounting and fit recommendations, material/hardness guidance and a clear designation format to ensure interchangeability and consistent quality in die and press-tool assemblies.

Key topics and technical requirements

• Scope: Main dimensions and tolerances (in millimetres) for form E flanged gliding guide bushes, type 1, intended for use in press tooling and mounted in the clamp/base plate.
• Dimensional data: Nominal guide diameters covered include typical sizes from 12 mm to 50 mm (see Table 1 for full dimension series and lengths). Detailed dimension drawings are given in the standard (Figure 1 and Table 1).
• Fits and mounting: Bushes are designed to be mounted in the plate with a transition or interference-type fit; an H7 hole tolerance is identified for the mounting hole to ensure correct fit. Bushes are fixed using guide clamps (flanges and clamps as means of retention).
• Material and hardness: Material selection is left to the manufacturer, but the standard prescribes a hardness of approximately 60 HRC (Rockwell) for the bush running surface.
• Surface finish and details: Surface roughness values are provided in micrometres; non-critical features such as chamfers, radii and lubrication grooves are left to the manufacturer’s discretion.
• Designation: A standard designation format is specified, e.g. “Guide bush ISO 9448-6 E - 12 × 20 × 30” (form, diameter D1, lengths l1 and l).
• Assembly guidance: Recommended D values to avoid incorrect assembly of upper/lower die plates include: 11, 15, 19, 24, 30, 38 and 48.

Applications

• Standardizes guide bushes/guide bushings used in:
  • Press tools and dies (sheet metal stamping, forming)
  • Progressive die assemblies and tool & die maintenance
• Enables consistent replacement parts, simplified procurement, and reliable tool alignment to reduce wear and downtime.

Who uses this standard

• Toolmakers, die designers and press tool manufacturers
• Maintenance engineers and purchasing/specification teams in metalworking industries
• Quality and inspection engineers verifying dimensional tolerances, hardness and fit

Related standards

• ISO 9448 (series) - other parts define different forms and types of guide bushes (Parts 1–11)
• ISO 6508-1 - Rockwell hardness testing method referenced for hardness verification

Keywords: ISO 9448-6, guide bushes, flanged gliding bushes, press tools, guide bushings, dimensions and tolerances, 60 HRC, H7 fit, die components.