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Dual Needle • Compound Feed • Large Hooks & Bobbins
The CONSEW® 339RB-4 is a heavy-duty, high-speed, two needle lockstitch machine designed for demanding industrial sewing environments. Featuring drop feed, needle feed, and alternating walking presser feet, this compound feed system ensures powerful and even material handling across thick, layered, and heavy-duty applications.
Built with large vertical axis hooks and bobbins, reverse feed, and a safety clutch mechanism, the 339RB-4 is engineered for long production runs and consistent performance. Its Centra-Lube® semi-automatic lubrication system and automatic hook lubrication reduce maintenance while maintaining smooth operation.
| Model | CONSEW® 339RB-4 |
| Number of Needles | 2 (Double) |
| Feeding Mechanism | Compound Feed (Walking Foot) |
| Stitch Type | 301 (Lockstitch) |
| Max Speed | 3,000 SPM |
| Max Stitch Length | 2 1/2 s.p.i. (approx. 10 mm) |
| Clearance Under Presser Foot | 9/16" (14 mm) |
| Work Space | 10" (258 mm) |
| Needle System | 135 x 17 |
| Available Needle Spacing | 1/8" (3.2 mm) to 1 1/2" (38.1 mm) |
| Standard Needle Spacing | 1/4" (6.4 mm) |
| Hook | 15502 (Large) |
| Bobbin | Metal 15041 / Pre-wound S or U |
| Needle Bar Stroke | 1 5/16" (33 mm) |
| Bed Size | 7" x 20 3/8" (177 mm x 518 mm) |
| Weight | 183 lbs |
The CONSEW® 339RB-4 is a true industrial workhorse built for precision double-needle stitching on heavy materials. With large hooks, compound feed walking foot, and long stitch capability, it is ideal for professional upholstery and heavy-duty production environments.
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