YASKAWA YR-HP0020D-A00 - Timing Belt Tension Adjustment

8 Disassembly, Reassembly, and Adjustment of B- and T-axis Timing
Belts
8.2 Adjustment of Timing Belts
8-3
159281-1CD
HW1480357
HP20D
8.2 Adjustment of Timing Belts
8.2.1 B-Axis
1. Loosen the GT-SA bolts shown in Fig. 8-1 “Disassembly and
Reassembly of B- and T-Axis Timing Belts”.
2. Adjust the initial tension of the timing belt by pushing the pulley in
the direction in which the timing belt stretches.
3. Temporarily tighten the GT-SA bolts , then adjust the initial tension to
the tension specified in Table 8-2 "Initial Tension of Timing Belt" by
using a tension meter.
4. Tighten the GT-SA bolts with the specified tightening torque. Then,
operate the B-axis at low speed to equalize the tension, and confirm
that the initial tension of the timing belt is the initial tension shown in
Table 8-2 "Initial Tension of Timing Belt".
As the set value of the tension meter, start with the following:
Belt mass: 34 gram per meter (width: 10 mm)
Belt width: 8 mm
Distance between axes: 276 mm
8.2.2 T-Axis
1. Loosen the GT-SA bolts shown in Fig. 8-1 “Disassembly and
Reassembly of B- and T-Axis Timing Belts”.
2. Adjust the initial tension of the timing belt by pushing the pulley in
the direction in which the timing belt stretches.
3. Temporarily tighten the GT-SA bolts , then adjust the initial tension to
the tension specified in Table 8-2 "Initial Tension of Timing Belt" by
using a tension meter.
4. Tighten the GT-SA bolts with the specified tightening torque. Then,
operate the B-axis at low speed to equalize the tension, and confirm
that the initial tension of the timing belt is the initial tension shown in
Table 8-2 "Initial Tension of Timing Belt".
As the set value of the tension meter, start with the following:
Belt mass: 34 gram per meter (width: 10 mm)
Belt width: 8 mm
Distance between axes: 184 mm
6
1
9
1
6
6
Table 8-2: Initial Tension of Timing Belt
Initial tension
B-axis 15 to 36 N (1.5 to 3.6 kgf)
T-axis 15 to 36 N (1.5 to 3.6 kgf)
4
2
10
2
4
4
70 of 96