ISO 13990-2:2006

Overview - ISO 13990-2:2006 (yarn feeders & yarn control)

ISO 13990-2:2006 is the ISO standard that specifies connecting dimensions for the mounting and electrical installation of yarn feeders and yarn control devices for knitting machines. It complements ISO 13990-1 (vocabulary) and ISO 13990-3 (cable dimensions) and defines the mechanical and electrical interface dimensions to ensure compatibility and interchangeability of yarn-feeding components across textile machinery.

Key topics and technical requirements

• Scope: Defines connecting dimensions for yarn feeders and yarn control devices as used on knitting machines (mounting and electrical installation).
• Referenced tolerances: Unless stated otherwise, tolerance class c from ISO 2768-1:1989 applies.
• Mechanical interface dimensions (examples from Table 1):
  • Working width of belt on adjustable pulley (a) = 20 mm
  • Distance between centre of working surface and fixed flange (b) = 19 mm
  • Total width of adjustable pulley (c) = 45 mm
  • Bore diameter of adjustable pulley (d) = 17 H7
  • Working width of pulley belt (g) = 13 mm
  • Typical feeder-specific distances (h): capstan 75 mm, unrolling 49 mm, combined > 98 mm
  • Clamping width of mounting (i) = 20 mm
  • Note: dimensions shown in figures (Figures 1–3) and Table 1 are normative; dimensions in brackets should be avoided in new designs.
• Electrical / interconnection interfaces (Table 2 examples):
  • Width of mounting rod (o) = 25 mm h11
  • Height of mounting rod (p) = 3 mm h11
  • Distance lower edge to contact surface (q) = 14 ± 0.5 mm
  • Distance between contact pin and clip (t) = 9.5 ± 0.5 mm
  • Clip opening width (u) = 17 mm
  • Contact ribbon clearance (x) = 1.5–3 mm
  • Contact area width (z) < 2.5 mm

Applications and who uses this standard

ISO 13990-2:2006 is used by:

• Textile machinery manufacturers and OEMs designing knitting machines
• Component suppliers of yarn feeders, capstan/unwinding feeders and yarn control devices
• Mechanical and electrical engineers responsible for machine integration, retrofits and maintenance
• Procurement teams specifying compatible components and spare parts Benefits include:
• Ensuring interchangeability and seamless mounting/electrical integration
• Reducing development time and installation errors
• Improving maintenance efficiency and spare-part compatibility

Related standards

• ISO 13990-1 - Vocabulary for yarn feeders and yarn control
• ISO 13990-3 - Dimensions for connecting and interconnection cables
• ISO 2768-1:1989 - General tolerances (applies for linear/angular tolerances)

Keywords: ISO 13990-2:2006, yarn feeders, yarn control, connecting dimensions, knitting machines, mounting dimensions, electrical installation, textile machinery.