Adjusting The Drive Belt Tension - Yamaha FLIP-X Series Maintenance Manual

2.1

Adjusting the drive belt tension

1 Turn off the controller power.
2 Place a sign indicating the robot is
being adjusted.
Place a sign indicating the robot is being
adjusted, to keep others from operating the
controller or operation panel.
3 Enter the safety enclosure.
4 Take off the end cover.
5 Remove the upper cover.
Remove the upper cover mounting screws
and remove the upper cover.
c
CAUTION
On robot models having a long stroke, the slider is
fitted in the travel guide (U groove) inside the
upper cover, so remove the upper cover by sliding
it along the direction the robot moves.
6 Apply a tension to the belt.
1. Install the belt tension adjustment bolt
supplied with the robot.
2. Loosen the belt stay mounting bolts (8).
3. Turn the adjustment bolt to apply a
tension to the belt.
7 Apply a load.
Move the slider by hand to a position at
which the distance from the slider edge to
the base block edge is 150mm.
Apply a load to the belt at a position 115mm
(B10) or 129mm (B14 , B14H) away from the
slider edge.
8 Tighten the belt stay mounting
bolts temporarily.
9 Check the slack amount.
It is accepted that the slack is within the
range stated in the table below when the
belt is pushed with a specified load.
If the slack is beyond the range, repeat
Steps 5 and 6 to adjust the belt tension.
Load and slack for drive belt tension
Load
Robot model
(N)
B10 4.9 to 5.9
B14/B14H 5.9 to 6.9
0 Tighten the belt stay mounting
bolts.
53305-AC-00
53304-AC-00
53306-AC-00
Slack
(mm)
(kgf)
0.5 to 0.6 2
0.6 to 0.7 2
Step 6
Applying a tension
Tension adjusting bolt
Step 7
Adjusting the speed reduction belt tension
L/2
Load
Pulley
Belt
Step 7
Load application position
150mm
Belt stay bolt
Belt stay
L/2
Push-pull scale
Slack
Pulley
L
3-3
3