11-12) Adjusting Drive Belt Tension; 11-12-1) Y-Axis Timing Belt - SunStar SWF/C Series User Manual

11-12) ADJUSTING DRIVE BELT TENSION

11-12-1) Y-Axis Timing Belt

[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.
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:
Type 2-head
Weight
4.0gf/m
Wide
25.0mm/#R
Span
480mm
Tension
18kgf
measurement
④ Unfasten the tension base screws. Turn the bolts to adjust the tension. Turn clockwise to increase and
counterclockwise to decrease the tension.
X-Y link bracket
Tension bolts
4-head
2 at both ends,
narrow
3.8gf/m 4.0gf/m
35.0mm/#R 25.0mm/#R
510mm 900mm
18kgf
18kgf
Driven pulley
Tension base screw
6-head
6-head
2 in the middle,
compact
wide
3.8gf/m 3.8gf/m
35.0mm/#R 35.0mm/#R
535mm 510mm
25kgf 18kgf
11-11
8-head
2 at both ends, 2 in the middle,
narrow wide
3.8gf/m
3.8gf/m
35.0mm/#R
35.0mm/#R
512mm
924mm
21kgf
21kgf
[Fig.11-22]