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SL Filament Winder

  • Large format workhorse designed to handle any large tank or tube
  • Ideal for Aerospace, Oil & Gas, and Utility applications
  • Up to 5 axes of motion

Large-Scale Winding

The SL filament winding machine is ideal for large-scale applications for Aerospace, Utility, or Oil & Gas. The SL filament winder is designed specifically for larger format parts. Handling parts weighing up to 20,000 lbs, 80 inches in diameter, and of any length, this machine is capable of winding any large tank or tube. Composite part manufacturing is streamlined with an easy-to-use interface and winding software: FiberGrafiX®.

The SL filament winder is a standardized filament winder with all the standard product line benefits such as optimized price, reduced lead time, and trusted reliability. The machine may be customized and automated to any level of customer needs.

Contact us to discuss your filament winding goals and how Engineering Technology Corp. can apply its expert capabilities to create the best solution to suit your filament winding needs.

Model Number


Maximum Mandrel Diameter

80 inches

Horizontal Carriage Stroke

475 inches

Radial Carriage Stroke

40 inches

Maximum Mandrel Weight (per spindle)

20,000 lbs

Number of Spindles


Number of Axes


Maximum Spindle Speed

60 RPM

Horizontal Carriage Speed

60 inches/sec

Radial Carriage Speed

40 inches/sec (3rd axis)

Rotating Eye Diameter

10 inches (4th axis)

Rotating Eye Speed

540 degrees/sec (4th axis)

Fiber System

Wet winding or towpreg

Maximum Fiber Tension (Total)

250 lbs

Basic Machine Size (L x W x H)

156 X 129 X 72 inches

Control System


Available Winder Options
  • Increased carriage stroke
  • Increased spindle speed
  • Pneumatic tailstock quill(s)
  • Siemens control system
  • 120 VAC power outlet (or any available power)
  • 5th axis (yaw)
Available Accessories
  • ST2 servo tensioning creel
  • Computer-aided tensioning (CAT) creel
  • Bookshelf creel
  • Wet winding drum resin bath
  • Wet winding dip resin bath
  • Delivery systems (towpreg & wet winding)
  • Tape tensioner
  • Safety fence
  • Safety light curtains
  • Safety control systems
  • Auto tie-on/cut-off system
  • Tailstock chucks

All filament winders are compatible with standalone fiber tensioning and resin systems