Brand:Vindaion (compatible with JACK A3/A4/A5 series computerized lockstitch sewing machines)
Key Features:
- 100% Original Factory Parts:Genuine upper thread tensioner assembly designed for JACK A3, A4, A5 computerized lockstitch sewing machines, ensuring perfect fit and reliable tension control.
- 7-Shape Design:Features a distinctive 7-shaped thread guide arm for smooth thread feeding and easy threading, reducing thread tangles and breakage.
- Precise Tension Adjustment:Equipped with an easy-to-turn adjustment knob, internal spring, and precision tension discs, allowing for accurate control of upper thread tension to ensure consistent stitch quality.
- Durable Construction:Made from high-grade metal alloy with a corrosion-resistant finish, paired with a robust plastic adjustment knob, offering excellent wear resistance and a long service life.
- Smooth Operation:Precision-engineered components ensure stable thread feeding and tension, even at high sewing speeds.
- Easy Installation:Direct replacement for the original part, with no complex adjustments required, minimizing machine downtime.
Specifications:
- Compatibility: JACK A3, A4, A5 industrial sewing machines
- Function: Upper thread tensioner assembly / Thread tension regulator / 7-shape thread guide tensioner
- Components: Tension knob, spring, tension discs, thread guide arm, mounting shaft
- Material: High-grade metal alloy + durable plastic knob
Why Choose Vindaion for JACK Upper Thread Tensioner?
- Genuine Quality:Original factory components for maximum reliability and consistent stitch formation.
- Cost-Effective:Reduces maintenance costs and production downtime with long-lasting, trouble-free operation.
- Global Compatibility:Ideal for international sewing factories and garment manufacturers using JACK industrial sewing machines.
Package Includes:
- 1 x Vindaion for JACK 7-Shape Upper Thread Tensioner Assembly
- Original factory packaging




