Overview
ISO 8116-3:2008 - "Textile machinery and accessories - Beams for winding - Part 3: Weaver’s beams" specifies the main dimensions, mechanical strength, permissible tolerances of form and position, thread profiles and automation connection specifications for weaver’s beams used in weaving preparation and weaving. The standard defines three beam types (A, B and C) and provides designation rules, helping manufacturers, mills and integrators ensure interchangeability and reliable performance.
Key topics and technical requirements
- Beam types and dimensions
- Type A: weaver’s beams with shafts
- Type B: end plates with square holes
- Type C: beams designed for automated beam changing (executions C1 and C2)
- Main flange, barrel and shaft dimensions and length rules are specified (tables and figures provide sizes and tolerances).
- Flange geometry and thread profiles
- Flange geometry is standardized for common diameters; two thread profile types (Type 1 and Type 2) are defined with dimensional limits for barrel and flange threads.
- Mechanical strength & quality classes
- Flange strength is classified per quality classes (Q1–Q4) and verified using test methods in ISO 8116-4.
- Run-out tolerances
- Circular axial run-out (T_a) limits depend on flange diameter (e.g., up to 600 mm = 0.5 mm; 600–800 mm = 0.75 mm; larger diameters have higher allowances).
- Total barrel run-out (T_r) is calculated per the standard (formula provided) and measured according to ISO 8116-8.
- Automation & connections
- Profile thread dimensions and connection specifications for automated beam changing are defined for Type C beams.
- Designation
- Standardized naming convention (e.g., Weaver’s beam ISO 8116-3 - A-800 × 38 × 1800-Q4) to communicate type, flange and shaft diameters, barrel length and quality class.
Applications and who uses it
- Textile machinery manufacturers - design and produce compatible weaver’s beams and flanges.
- Weaving mills and textile converters - specify beams for procurement, maintenance and replacement to ensure proper fit and performance.
- Machine integrators & automation suppliers - implement beam-changing systems using the standardized connection and thread profiles.
- Quality engineers and test labs - verify run-out, dimensional and mechanical strength requirements.
Practical benefits include interchangeability of beams across equipment, reduced downtime during beam changes, predictable mechanical performance and easier procurement/specification.
Related standards
- ISO 8116-1, -2, -4, -8 (other parts of the Beams for winding series)
- ISO 109 (working widths of weaving machines)
- ISO 286-2 (limits and fits - tolerance grades)
Keywords: ISO 8116-3, weaver’s beams, textile machinery, beams for winding, flange geometry, run-out tolerance, thread profiles, beam automation, mechanical strength.
