Maintenance and inspection procedures 5-135
(15) Timing belt tension
The following table shows the preset values of the sonic belt tension gauge, the tension value for new belt
installation, and the tension value as the replacement guideline.
Table 5-8 ： Belt tension
Axis
Belt type
Preset value
Tension for new belt
installation (N)
Replacement
guideline tension (N)
M(g/m)
W(mm/R)
S(mm)
RV-2FR series
J1
210-3GT-6
2.5
6
61
26 to 32
15
J2
324-3GT-6
2.5
6
88
26 to 32
15
J3
303-3GT-6
2.5
6
103
26 to 32
15
J4
186-3GT-4
2.5
4
52
18 to 22
10
J5
336-3GT-4
2.5
4
131
18 to 22
10
J5 (brake)
174-3GT-4
2.5
4
42
-
Note1)
Note1)The tension of the brake timing belt is automatically adjusted by work of spring installed on the motor plate.
10
J6
345-3GT-4
2.5
4
131
18 to 22
10
J6 (brake)
174-3GT-4
2.5
4
42
10
RV-2FRL series
J1
210-3GT-6
2.5
6
61
26 to 32
15
J2
324-3GT-6
2.5
6
88
26 to 32
15
J3
324-3GT-6
2.5
6
106
26 to 32
15
J4
186-3GT-4
2.5
4
52
18 to 22
10
J5
336-3GT-4
2.5
4
131
18 to 22
10
J5 (brake)
174-3GT-4
2.5
4
42
10
J6
345-3GT-4
2.5
4
131
18 to 22
10
J6 (brake)
174-3GT-4
2.5
4
42
10
RV-4FR series
J1
315-EV3GT-12
2.5
12
85.5
79.7 to 97.4
30
J3
369-EV3GT-6
2.5
6
118.4
39.2 to 47.9
15
J4
Note2)
Note2)RV-4FRJL (5-axis type robot) has no J4 axis.
240-EV3GT-6
2.5
6
56.4
39.2 to 47.9
15
J5
393-EV3GT-4
2.5
4
149.8
27.0 to 33.0
10
J6
270-EV3GT-4
2.5
4
96.0
27.0 to 33.0
10
RV-7FR series
J1
405-EV5GT-20
4.0
20
107.5
96 to 118
70
J3
501-3GT-9
2.5
9
178.5
59.4 to 72.6
22
J4
237-EV3GT-6
2.5
6
54.9
39.2 to 47.9
15
J5
408-EV3GT-6
2.5
6
150.0
39.2 to 47.9
15
J6
270-EV3GT-4
2.5
4
96.0
27.0 to 33.0
10
RV-7FRLL
J4
252-EV3GT-9
2.5
9
60.0
59.4 to 72.6
22
J5
408-EV3GT-6
2.5
6
150.0
39.2 to 47.9
15
J6
270-EV3GT-4
2.5
4
96.0
27.0 to 33.0
10
RV-13FR/13FRL, RV-20FR series
J4
252-EV3GT-9
2.5
9
60.0
59.4 to 72.6
22
J5
495-EV3GT-9
2.5
9
181.0
59.4 to 72.6
22
J6
330-EV3GT-6
2.5
6
111.0
39.2 to 47.9
15
