ISO 363-1:2006

Overview

ISO 363-1:2006 - Textile machinery and accessories - Flat steel healds with closed end loops - Part 1: Dimensions of healds manufactured of rolled steel wire specifies the principal dimensions and configuration details for flat steel healds (O‑shaped closed end loops) made from rolled steel wire for use in weaving and other textile machinery. This first edition replaces ISO 363:1992 and is intended to ensure interchangeability, compatibility and safe use of healds across equipment and suppliers.

Key topics and requirements

• Scope: Defines the main dimensions of flat steel healds with closed end loops manufactured of rolled steel wire.
• Dimensional data: Provides sizes in millimetres for typical cross‑sections, thread‑eye dimensions and distances between end loops. Typical cross‑section examples include 2.0×0.25 mm, 2.2×0.30 mm, 2.5×0.35 mm and 2.8×0.40 mm. Standard distances between end loops commonly include 280, 330, 380 and 420 mm; thread‑eye sizes are shown in the table (approx. 5.0–6.5 mm depending on cross‑section).
• Heald types: Illustrates straight (SIMPLEX) and cranked (DUPLEX) healds, and identifies end‑loop offset, thread eye orientation (direction of eye open to the right), and other geometric details.
• Ordering options: Notes that healds may be supplied with corrugated end loops at one end and flat loops at the other (recommended for certain automatic drawing‑in machines).
• Manufacturing tolerances: States that slight deviations from the nominal dimensions are permissible for certain manufacturing methods.
• Illustration and table references: Dimensions and notes are given graphically (Figure 1) and in tabular form (Table 1).

Applications and users

ISO 363-1:2006 is directly relevant to:

• Heald manufacturers - for designing and producing flat steel healds to accepted dimensions.
• Textile machinery builders - to ensure compatibility of healds with looms and drawing‑in equipment.
• Weaving mills and textile plants - for procurement specifications, maintenance and replacement of healds.
• Quality assurance and inspection - to verify heald geometry and interchangeability.
• Suppliers and technical buyers - to reference standardized sizes when ordering parts.

Keywords: ISO 363-1:2006, flat steel healds, closed end loops, rolled steel wire, heald dimensions, textile machinery, thread eye, weaving machines.

Related standards

• ISO 363-2 - Part 2: Dimensions of healds manufactured of hardened strip steel (companion document).
• ISO 363:1992 - earlier edition superseded by ISO 363-1:2006.