LWX25 IEU Needle Size #70/10 BP Blind Hem Needle 5PK
The LWx25 IEU (also known as the 29-20 or SY 7335) is a specialized industrial sewing machine needle designed specifically for heavy-duty blindstitch (blind hem) applications. It is part of the "LW" (Long Blind Stitch) family but is distinct due to its specific curvature and the IEU point designation.
The "IEU" Point Style
The IEU designation refers to an eccentric round point with a specific tip geometry.
- Purpose: This point is engineered to "catch" only a few fibers of very thick or dense material without penetrating all the way through, which is essential for a truly "blind" (invisible) hem on heavy fabrics.
- Precision: The eccentric tip is slightly offset, allowing it to skim the surface of the fabric more effectively than a standard centered point.
Technical Specifications
- Needle Shape: Curved. This curve is required for the swinging needle bar motion found in blindstitch machines.
- Equivalent Systems: 29-20, 29-49, 2140 TP, SY 7335, and CANU 39:61.
- Finish: Usually Chromium-plated to reduce heat and friction when sewing through thick materials.
Machine Compatibility
The LWx25 IEU system is primarily used in industrial blindstitch machines configured for heavy-duty tailoring, outerwear, and thick upholstery fabrics.
- Strobel: Models such as the 141 and 142 series.
- Maier: Various industrial hemming units.
- Common Applications: Hemming heavy wool coats, thick trousers, and heavy-weight drapery or upholstery