SPEEDWAY AI4 Material Recognition Automatic Direct Drive Lockstitch Sewing Machine with Electronic Tension & Thread Trimmer Complete Assembled with Table and Stand Included

The SPEEDWAY® AI4 is the automatic industrial sewing machine designed to build and grow your business. A full-size, single-needle lockstitch machine with advanced automation, the AI4 combines speed, precision, and reliability in one complete package. Perfect for garment factories, upholstery workshops, tailoring shops, and even ambitious beginners, this machine adapts to virtually any fabric without the need for manual adjustments.

Whether you’re sewing canvas, cotton, denim, polyester, spandex, jersey, upholstery fabric, leather patches, or elastic textiles, the AI4 automatically detects the material and delivers consistent, flawless stitches every time. From light dresses to heavy denim jeans, from sportswear to leather accessories, this machine was engineered to handle it all.

Smart Power & Control

At the heart of the AI4 is its integrated direct-drive servo motor, designed for efficiency and long-term durability. Unlike belt-driven motors, direct-drive technology ensures minimal vibration, quieter operation, and significant energy savings. Variable speed settings give you total control, while automatic functions let you focus on your craft.

Designed for Productivity

The SPEEDWAY AI4 isn’t just fast—it’s intelligent. With automatic thread trimming, electronic tension control, automatic backtack, and presser foot lift, your workflow becomes smoother and faster, saving valuable time on every garment. An integrated LED light illuminates your sewing area, while the intuitive control panel makes it simple to adjust settings for each project.

Versatility for Every Fabric

This machine is engineered for universal fabric adaptation. The AI4 detects and adjusts to a wide variety of materials, including:

• Light fabrics: cotton, polyester, silk, jersey, spandex
• Medium fabrics: twill, canvas, upholstery cloth
• Heavy fabrics: denim, vinyl, multilayer assemblies

This unmatched adaptability ensures perfect stitch quality for every project, making the AI4 the go-to machine for both high-volume production lines and dedicated professionals.

Materials & Applications

The Speedway AI4 is designed for high-speed garment production and versatile textile applications, making it ideal for:

1. Lightweight fabrics – cotton, polyester, blends, shirts, dresses, and uniforms
2. Elastic & stretch fabrics – jersey, spandex, sportswear, and activewear
3. Medium-weight materials – twill, canvas, workwear, and uniforms
4. Heavy fabrics – denim, jeans, jackets, and multilayer garments
5. Upholstery textiles – light furniture covers, cushions, and decorative sewing
6. General apparel production – blouses, trousers, skirts, and everyday fashion items

Helpful Features

• High-speed sewing up to 5,000 stitches per minute
• Direct-drive servo motor for quiet, energy-efficient operation
• Automatic thread trimming & electronic thread tension control
• Auto presser foot lift & backtack function
• LED lighting for a bright, clear working area
• Large 12" x 5" operating space for easy fabric handling
• Low vibration and smooth, stable operation

Machine Specifications

• Model: SPEEDWAY AI4
• Stitch Type: Single-needle lockstitch
• Stitch Length: Up to 5mm
• Needle System: DBx1 (#11–#18)
• Sewing Speed: Up to 5,500 stitches per minute
• Operating Space: 305mm x 130mm (12" x 5")
• Motor Type: Built-in direct drive servo
• Presser Foot Lift: Automatic / Manual (up to 13mm)
• Lubrication System: Automatic
• Material Adaptation: Cotton, polyester, denim, canvas, leather, spandex, jersey, upholstery & more
• Configuration: Complete set with industrial table and legs

A Complete Package You Can Trust

Each SPEEDWAY AI4 comes as a full industrial package including motor, table, stand, and accessories—ready to use the moment it arrives. Backed by SPEEDWAY’s proven technology and engineering, the AI4 is a machine you can rely on for years of continuous production. Whether you’re a professional upgrading your factory floor or a serious beginner investing in your first industrial machine, the AI4 is designed to help you achieve professional results with confidence