SPEEDWAY SW6-5D 2-Needle 5-Thread True Safety Stitch Direct Drive Overlock Industrial Sewing Machine for Wovens, Denim & Workwear - Complete Setup, Fully Submerged Table Included

The SPEEDWAY SW6-5D is a 2-needle 5-thread true safety stitch direct drive overlock industrial sewing machine engineered for woven garment construction — denim, jeans, workwear, uniforms, trousers, heavy shirts, and any application where a single seam must both join two layers and overedge them simultaneously. Built around a fully integrated direct drive servo motor, the SW6-5D delivers a max sewing speed of 6,500 sti/min with smooth variable speed control.

Unlike 4-thread mock safety stitch overlocks (such as the SW6-4D), the SW6-5D produces a true safety stitch by combining a 2-thread chainstitch (ISO 401) with a 3-thread overlock (ISO 504) in a single pass — the chainstitch holds the seam together while the overlock simultaneously finishes the raw edge to the right of it. This produces a substantially stronger and more durable seam, which is why 5-thread safety stitch is the global industry standard for denim, jeans, and workwear assembly.

The SW6-5D shares the same Speedway SW6 Direct Drive platform with the SW6-3D, SW6-3D-32R, SW6-4D and SW6-6D. The DC×27 (#11-#14) needle system handles medium-to-heavy woven fabrics with industrial-weight threads. Complete with industrial fully submerged table and stand.

What's Included

• SPEEDWAY SW6-5D Direct Drive 2-Needle 5-Thread Safety Stitch Overlock Machine Head (Ships Assembled)
• Integrated Direct Drive Servo Motor
• Industrial Fully Submerged Table & Stand
• Standard 5-Thread Safety Stitch Presser Foot Set
• DC×27 (#11-#14) Needles and Standard Bobbins
• Standard Accessories Kit
• Operator's Manual

Key Features

• 2-needle 5-thread true safety stitch (ISO 401 chainstitch + ISO 504 overlock) — joins and overedges the seam in one operation, substantially stronger than 4-thread mock safety
• Industry-standard seam for denim, jeans, and workwear — globally the dominant assembly stitch for woven garment construction
• Direct drive integrated servo motor — quieter, more responsive, lower energy use vs belt-driven setups
• 6,500 sti/min max sewing speed — high-throughput woven garment production
• DC×27 (#11-#14) needle system — industrial standard, widely available across suppliers
• 5 mm overedging width — strong edge finishing on woven seams
• Stitch length adjustable up to 4.5 mm
• Bottom differential feed ratio 0.7 - 2 — clean control on dense wovens and stretch denim
• 5.5 mm max presser foot lift — accommodates multi-layer denim and workwear assemblies
• Automatic lubrication — long service life, minimal maintenance
• Balanced chainstitch + overlock looper take-up — uniform safety-stitch quality
• Ships complete with fully submerged industrial table and stand, ready to run

Ideal For

• Denim and jeans manufacturing — true safety stitch side seams, inseams, yoke seams
• Workwear, uniforms, and industrial coveralls
• Trousers and pants — heavy wovens and twill
• Heavy shirts, chambray, and oxford cotton
• Outerwear seam construction
• Tents, sailcloth, and technical wovens
• Any garment where seam strength is critical — true safety stitch is required, mock safety is not enough
• Shops upgrading from 4-thread mock safety to true 5-thread construction

Specifications