Overview
ISO 8116-2:2008 - Textile machinery and accessories - Beams for winding - Part 2: Warper’s beams - specifies the main dimensions, mechanical strength, permissible tolerances of form and position, driving devices and designation rules for warper’s beams with and without shafts. This international standard is intended for manufacturers, designers and users of beams used in warp yarn preparation and winding operations in the textile industry.
Key topics and requirements
- Types and centring/driving forms
- Type A: warper’s beams with shafts
- Type B: beams with cylinder bore for centring and key seat for driving
- Type C: beams with toothed cone for centring and driving (executions C1, C2, C3)
- Main dimensions
- Standard flange diameters, barrel diameters, distances between flanges and shaft details are specified (tables and figures provide permissible sizes and increments).
- Mechanical strength
- Flange mechanical strength is classified according to the quality classes defined in ISO 8116-4 and must be verified by the referenced test methods.
- Run-out tolerances
- Circular axial run-out (T_a) of flanges and total barrel run-out (T_r) tolerances are specified; measurement methods reference ISO 8116-8.
- Residual imbalance
- Guidance on allowable residual imbalance is given (a typical grade is G 6.3 in accordance with ISO 1940-1), with the option to specify other grades when needed.
- Designation rules
- A standard naming format is defined (example: Warper’s beam ISO 8116-2 - A-915 × 50 × 1800-Q2) including type, flange and shaft diameters, flange spacing and quality class.
Applications and users
- Practical applications:
- Manufacture and specification of warper’s beams for winding and warp preparation processes
- Quality control, inspection and acceptance testing of beams used in winding machines
- Interchangeability and procurement of replacement beams and accessories
- Typical users:
- Textile machinery manufacturers and OEMs
- Machine designers and mechanical engineers in textile plants
- Quality assurance and test laboratories
- Procurement and maintenance teams specifying replacement beams
Related standards
- ISO 8116-4 - Test methods and quality classification of flanges for beams
- ISO 8116-8 - Definitions of run-out tolerances and measurement methods
- ISO 286-2 - ISO system of limits and fits (tolerance grades)
- ISO 1940-1 - Balance quality requirements for rotors (residual imbalance)
Keywords: ISO 8116-2:2008, warper’s beams, textile machinery, beams for winding, flange dimensions, run-out tolerance, mechanical strength, beam designation.