Service and maintenance manual for Juki LK-1910, LK-1920, and LK-1930 computer-controlled high-speed bar tacking industrial sewing machines.
This Engineer's Manual is designed for technical personnel responsible for the service and maintenance of Juki LK-1910, LK-1920, and LK-1930 computer-controlled high-speed bar tacking industrial sewing machines. It provides detailed information on standard adjustments, adjustment procedures, results of improper adjustments, and troubleshooting measures that are not covered in the standard operator instruction manual. The manual is intended to be used in conjunction with the relevant Instruction Manual and Parts List.
| Max. sewing speed | 2,500 rpm |
|---|---|
| Stitch length | 0.1 to 10.0 mm |
| Feed motion of work clamp foot | X (lateral) direction 100 mm Y (longitudinal) direction 60 mm |
| Needle bar stroke | 41.2 mm |
| Hook type | 2-fold semi-rotary hook |
| Memory of pattern data | EEP-ROM (32k byte) |
| Machine head weight | 46 kg |
| Operating temperature range | 5°C to 35°C |
| Line voltage | 50/60 Hz |
This manual describes standard adjustments, adjustment procedures, and results of improper adjustments for maintenance personnel.
It covers the LK-1910, LK-1920, and LK-1930 computer-controlled high-speed bar tacking industrial sewing machines.
The manual recommends New Defrix Oil No. 2, which is equivalent to ISO VG 32.
The maximum sewing speed can be set up to 2,500 rpm.