20U SINGER® Single Needle Lockstitch, Straight and Zigzag Sewing Machines 20U SINGER® Single Needle Lockstitch, Straight and Zigzag Sewing Machines General Applications Features · Single needle lockstitch zigzag machine for a wide · Independently adjustable and variable forward range of materials from light to medium heavy fabrics. and reserve feed system facilitates ease of back- Embroidery can also be accomplished on these varieties. stitching. · Stitch width can be adjusted freely by using a General Specifications knee operated bight control. Stitch width can also · Zigzag stitch width 9 mm - 12 mm. Straight stitching at be fixed. speeds up to 2,500 s.p.m. can be achieved by means of · 20U83 hook has advancing and retarding a needle bar frame locking device. mechanism to keep needle and hook in correct · Bed dimensions: relationship even at widest bights (max. bight Variety Length Width Space to right of needle 12 mm). Artisan & Industrial Sewing Machines Sewing Industrial & Artisan in mm in mm in mm · Easily convertible to embroidery or zigzag or 20U73/83 153/4 399 7 178 83/16 208 straight stitching. · Machine pulley size: 2.9’’ (74 mm) · Provided with a needle position control device · Motor required: SINGER® clutch motor low speed 1/3 which makes it possible to produce buttonholes. H.P.or 1/4 H.P.,4 pole. · Built-in bobbin winder. · Needle Cat.No 1910-05 Specification Chart Variety Feed type Max. Stitch Length Max. zigzag width Applications s.p.i. mm in mm 20U73 5 5.0 11/32 9.0 Straight and zigzag seaming and embroidery. 20U83 15/32 12.0 Drop feed and reverse feed.The reverse lever is spring loaded. Regular fittings supplied with Maximum sewing speed 20U machines By restricting the width of zigzag stitching to Variety Feed dog Throat plate Presser foot no more than required for the work, it is possible 20U73 Zigzag seaming 606688 606652 606650 to use the machine at the highest possible speed. Straight seaming 606697 606695 606693 20U83 Zigzag seaming 606502 606402 606651 This chart shows maximum speeds related to Straight seaming 606697 606695 606693 zigzag bight. Attachments supplied with 20U73 Variety 5 mm (3/16’’) 9 mm (11/32’’) Hemmer foot 1/8’’ (3.2 mm) P/N606694 20U73 2,500 S.P.M. 2,000 S.P.M. Zipper foot P/N606691 Variety 12 mm (15/32’’) Presser foot for making free-hand buttonholes 20U83 1,800 S.P.M. P/N 606692 Note:The maximum speeds are also dependent on materials and type of operation. © 2003 Singer Corporation Stutensee / All Rights Reserved.