Semi-long Flat-bed, 1-needle, Lockstitch Machine with Large Shuttle-hook for Extra Heavy-weight Materials TNU-243U (unison-feed) 
TU-273U (top and bottom-feed) 
| Semi-long Flat-bed, 1-needle, Lockstitch Machine with Large Shuttle-hook for Extra Heavy-weight Materials | |
| TNU-243U (unison-feed) | |
| TU-273U (top and bottom-feed) | |
The machine is optimally suited for the sewing of extra heavy-weigth materials such as tents, seat belts, and bag handles.
TNU-243U
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| Model name | TNU-243U, TU-273U |
|---|---|
| Max. sewing speed | 800sti/min |
| Max. stitch length | 15mm |
| Presser foot | By knee: 20mm |
| Alternating vertical movement | 4～8mm |
| Distance from needle to machine arm | 420mm |
| Needle | 794 (Nm230) Nm130～Nm280 DY×3 #21～#28 |
| Thread | #8～#0, B92～B207 Nm=30/3～15/3 |
