1.2 Technische Data
Sub-classes
Stitches/min 1 2 3 4 5 6 7
max.
from
factory
271-140041 5500 4800 4mm x
271-140042 5500 4800 4mm x x x
271-240042 5500 4800 4mm x x x x
272-140041 5000 4800 4mm x
272-140042 5000 4800 4mm x x x
272-160062* 5000 4000 6mm x x x
272-640141 5000 4800 4mm x x
272-640142 5000 4800 4mm x x x x
272-740142 5000 4800 4mm x x x x
273-140042 5500 4800 4mm x x x
274-140042 5000 4800 4mm x x x
* Extra-large shuttle = 70% greater capacity of the underthread spool than with the
standard hook
To 1: Max. stitch length for each sub-class
To 2: Thread trimming for needle and bobbin thread
To 3: Electro-magnetic automatic bartack. It is switched via the pedal and executes
the following functions: lowering the pressure foot, seam beginning and seam
end bartack, needle and bobbin thread trimming, raising the pressure foot.
To 4: Keys on the arm head:
- Needle high - low
- Bartack on - Bartack function switched off at the control panel
- Bartack suppressed - Bartack function switched on at the control panel
- Bartack within the seam
To 5: Edge cutter right, next to the needle. Switched on and off with the hHand lever
or, as optional equipment, electro-pneumatically via key. Depending on the
sewing unit (E-no.), the cutting interval is 3.5 ; 5.0 ; 8.0 or 10mm. Special
sewing devices are required for graduated cutting. The knife stroke is 5.5mm.
To 6: Edge cutter, but with seperate electric drive. Two cutting rpms can be switched
in.
To 7: Edge cutter, which cuts into the material edge crosswise during sewing, e.g. for
tension-free turning over of round neck openings, collars, arm holes, etc. The
cut occurs after every 6 stitches. On request after 4 stitches. The cut depth has
a max. of 15mm. It is adjustable up to about 1mm to the seam.
Needle system: 134, 797 or Sy 1955-01
clearance under the pressure foot
When raised: 8.0mm by 271 and 273
9.5mm by 272 and 274
When sewing: 8.0mm
Operating pressure: 6 bar
Air consumption: 0.02 Nl per work cycle by 273 and 274
0.1 Nl per work cycle by 272-740142
mm
6
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