MAINTENANCE MANUAL
172
STE 85357
Fig. 4.39 Ball screw and axis 4 motor assembly (THL800, THL900, THL1000)
Table 4.5 Value of tension of axis 4 timing belt (THL800, THL900, THL1000)
Value of tension [N]
Unit mass [g/m]
Belt width [mm]
Span [mm]
150 to 180
4.1
15
340
7)
Mount the axis 3 motor assembly. For the mou
nting procedures, see “Para.
4.4.8, Mount
ing Axis 3 Motor” and “Para. 4.5.3, Replacing Axis 3 Timing Belt”
above.
8)
Arrange the connectors and cables as originally set. (See the pictures you
took beforehand.)
9)
Perform home setting for Axes 3 and 4.
10)
Press the brake release switch and move Axis 3 in the vertical direction to make
sure that there is no problem.
11)
Carry out a test operation of Axes 3 and 4 and make sure that the belt tension is
appropriate.
12)
Attach the arm 2 cover. Now replacement of the axis 4 timing belt completes.
Axis 4 timing belt
[Bolts for adjusting axis 4 tension]
M4 x 16 x 2 pcs.
Hexagon nuts
Tension meter