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Setting the looper
Example using a 934 SIN/Nm 110 needle
Needle thickness at "a"= 0.7 mm
Looper thickness at "b"= 1.4 mm
Distance from looper tip to the needle = 0.1 mm
For larger needle thickness 110 Nm "X" *= 0.1 mm
Ellipsis width "E"= 2.3 mm
*X = larger dimension a for larger needle thicknesses.
X for Nm 100
X for Nm 110 and 120
X for Nm 130
To set, move the lower shaft axially
To the right = ellipsis width is smaller
To the left =
9.3.1 Setting the needle evasive movement
Fig. 35: Setting the needle evasive movement
(1) - Gauge
(2) - Lower shaft
Setting steps
1. Screw on the clamping sleeve (4) and fit the dial gauge (1), order no.
2. Turn the handwheel to position the looper shaft (3) at its lowest point.
3. Set the measured value 0 on the dial gauge (1).
4. Turn the handwheel to position the looper shaft (3) at its highest point.
5. Read the difference off the dial gauge.
Service Instructions 610/630 - 00.0 - 10/2014
ellipsis width is larger
①
171 981.
= 0
mm
= 0.1 mm
= 0.2 mm
④
③
②
(3) - Looper shaft
(4) - Clamping sleeve
43
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