SPEEDWAY SW6-4D 2-Needle 4-Thread Direct Drive Overlock Industrial Sewing Machine with 6,500 SPM Max Speed - Complete Setup, Fully Submerged Table Included

The SPEEDWAY SW6-4D is a 2-needle 4-thread direct drive overlock industrial sewing machine engineered for high-volume apparel production — T-shirts, knitwear, sportswear, blouses, dresses, uniforms, and light-to-medium woven garment seam finishing. Built around a fully integrated direct drive servo motor (no belt, no power loss, lower noise), the SW6-4D delivers a max sewing speed of 6,500 sti/min with smooth variable speed control.

This Speedway platform sits between the Jack E4S-4 and the JUKI MO-6814D family — a competitive direct drive option for shops upgrading from the legacy SW747e servo-belt configuration. The DC×27 (#11-#14) needle system handles light-to-medium fabrics with industrial-weight threads, while the adjustable differential feed ratio of 0.7 - 2 prevents stretching or puckering on knits and lets the operator dial in clean gathers when needed.

Complete with industrial fully submerged table and stand, ready for immediate apparel production.

What's Included

• SPEEDWAY SW6-4D Direct Drive 2-Needle 4-Thread Overlock Machine Head (Ships Assembled)
• Integrated Direct Drive Servo Motor
• Industrial Fully Submerged Table & Stand
• Standard Overlock Presser Foot Set
• DC×27 (#11-#14) Needles and Standard Bobbins
• Standard Accessories Kit
• Operator's Manual

Key Features

• 2-needle 4-thread overlock (ISO 514 — mock safety stitch) — clean overedge seam finish
• Direct drive integrated servo motor — quieter, more responsive, lower energy use vs belt-driven setups
• 6,500 sti/min max sewing speed — high-throughput apparel production
• DC×27 (#11-#14) needle system — industrial standard, widely available across suppliers
• 6 mm overedging width — strong edge finishing on apparel seams
• Stitch length adjustable up to 4.5 mm
• Bottom differential feed ratio 0.7 - 2 — perfect stretch and gathering control on knits and stretch fabrics
• 2-row feed dog — clean, slip-free fabric movement
• 5.5 mm max presser foot lift — accommodates multi-layer assemblies
• Automatic lubrication — long service life, minimal maintenance
• Balanced looper/needle thread take-up — uniform stitch quality
• Low vibration and operator-friendly thread path
• Ships complete with fully submerged industrial table and stand, ready to run

Ideal For

• T-shirt and knitwear manufacturing — sleeve hems, side seams, shoulder seams
• Activewear and sportswear production
• Uniforms and workwear
• Light to medium woven apparel
• Blouses, dresses, and shirts — clean overedge finishing
• Children's wear and underwear panels
• Tape attaching, elastic insertion, edge binding on knits
• General apparel safety-stitch seam finishing in high-volume production
• Shops upgrading from legacy Speedway SW747e or similar servo-belt overlocks

Specifications