5 Maintenance and Inspection
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
-
Note1)
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
-
Note1)
10
J6 345-3GT-4 2.5 4 131 18 to 22 10
J6 (brake) 174-3GT-4 2.5 4 42
-
Note1)
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
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