MAINTENANCE MANUAL
56
STE 85357
Fig. 2.36 Mounting axis 4 motor assembly (THL300, THL400)
11)
While pulling the axis 4 motor plate with the axis 4 tension adjustment bolts,
measure the tension with a tension meter. Tighten the flange head bolt at the
location where the tension reaches a value slightly smaller than 66 N (because
the tension gets larger by retightening of the flange head bolt). Adjust so that the
tensile value becomes between 66 and 88 N when the flange head bolt is
retightened. Next, tighten the tension adjustment bolts and fasten with the
hexagon nuts. If the bolt is not tightened any further, the bolt can come out
while the robot is in operation. The values to be used for the tension meter are
as shown in the table below.
Fig. 2.37 Adjusting axis 4 tension (THL300, THL400)
Axis 4 timing belt
Tension meter
Bolts for adjusting axis 4 tension
Hexagon socket head cap screw
M3 x 12 x 2 pcs.
Hexagon nuts
[Axis 4 motor plate
set bolt]
Flange head bolts M4 x
8 x 4 pcs.
Axis
4
motor assembly