Jack A4 Fully Automatic Sewing Machine | Used | Certified & Production-Ready

Description

The Jack A4 is a premium, fully automatic industrial lockstitch machine engineered for maximum factory throughput. As a “smart” sewing solution, this used unit features a voice-guided interface, automatic thread trimming, auto-backtacking, and an automatic foot lifter. It is designed to minimize manual handling, reduce operator fatigue, and eliminate thread waste, making it the most cost-effective upgrade for garment export units seeking high-level automation at a refurbished price point.

Advantages

• Precision-controlled straight stitching

• Intelligent automation for consistent output

• Energy-efficient direct drive system

• Stable performance in high-volume production

Machine Condition & Testing

Every used Jack A4 undergoes an exhaustive 25-point automated systems check:

• Automation Audit: Full testing of the auto-thread trimmer (UBT), auto-backtack, and auto-presser foot lifter.

• Electronic Stability: The PCB and control panel are inspected for voltage fluctuations and software responsiveness.

• Mechanical Calibration: Hook-to-needle timing adjusted to factory standards for skip-free high-speed stitching.

• Oil-Leakage Test: Oil circulation system and gaskets checked to ensure fabric remains stain-free during operation.

Installation and Setup

This machine ships ready for installation. Connect to standard 220V single-phase power supply, mount on industrial sewing table, thread the machine, and begin production.

Installation support included:

• Basic setup guidance provided
• Threading diagram supplied
• Initial adjustment recommendations
• Operational manual (if available)

Most operators familiar with industrial lockstitch machines can complete installation and begin production within 2-3 hours of delivery.

FAQs

Is this machine fully tested before delivery? Yes. Every Jack A4 undergoes a continuous 6-hour “stress test” where all automatic functions are cycled repeatedly to ensure 100% field reliability.

Do you provide installation support? The machine is shipped as a complete set. We provide detailed video-call installation support and technical manuals for the control panel programming.

What is the condition of the motor and panel? We guarantee the original Jack motherboard and Direct Drive motor are in excellent health. No units with repaired PCBs are accepted into our certified inventory.

Is GST invoice provided? Yes. A formal GST invoice is generated for every order to ensure your business can claim applicable tax credits.