11-11
11-12) ADJUSTING DRIVE BELT TENSION
11-12-1) Y-Axis Timing Belt
① Push the X frame plate to the driven pulley ([Fig.11-21]) and check the drive belt tension on the Y-axis. Use the
sound wave tension gauge.
② Tension on the Y-axis belt should measure as below on the sound wave measurer when you pluck the middle of
the belt between the X-Y link bracket and the drive pulley with your finger.
③ Input data for the sound wave tension measurer:
④ Unfasten the tension base screws. Turn the bolts to adjust the tension. Turn clockwise to increase and
counterclockwise to decrease the tension.
[CAUTION]
Specification of Drive Belt Tension Adjuster
Model: U-305 Series Sound Wave Belt Tension Gauge - Standard
Manufacturer: UNITTA
[CAUTION]
Drive belt tension can be adjusted only by trained SWF engineers.
Make sure to turn OFF the machine during the adjustment.
[Fig.11-22]
Tension bolts
X-Y link bracket
Driven pulley
Tension base screw
Weight
Wide
Span
Tension
measurement
4.0gf/m
25.0mm/#R
480mm
18kgf
3.8gf/m
35.0mm/#R
510mm
18kgf
4.0gf/m
25.0mm/#R
900mm
18kgf
3.8gf/m
35.0mm/#R
535mm
25kgf
3.8gf/m
35.0mm/#R
510mm
18kgf
3.8gf/m
35.0mm/#R
924mm
21kgf
3.8gf/m
35.0mm/#R
512mm
21kgf
Type 2-head 4-head
6-head
compact
6-head
2 at both ends,
narrow
2 in the middle,
wide
8-head
2 at both ends,
narrow
2 in the middle,
wide
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