
7
2.1.3 Allowable Load on Wrist Axis
The payload of manipulator must not exceed max. payload capacity 4kg, including a welding torch, a chucking
tool in handling and a workpiece.
Mounting a standard welding torch does not cause any problems to the manipulator, but both the moment and the
moment of inertia must be within the allowance stated in the table below when the manipulator is used for
handling or any other similar purposes.
Also, when a load is imposed not in the form of mass but force, a wrist axis must not be used with these maximum
allowable values exceeded.
Table 2.1.2 Allowable Load on Wrist Axis
NB04L-02
Axis
Name
Allowable Moment Allowable Moment of Inertia
Axis J4 10.1 N*m
0.38
kg *m
2
Axis J5 10.1 N*m 0.38 kg *m2
Axis J6 2.94 N*m 0.03 kg *m2
220
Distance from Axis J6
Rotation Center
Distance from Axis J5
Rotation Center
(mm)
258
345
(mm)
W=4kg
W=3kg
300
400
Note: Though the center of gravity shown above fully satisfies the allowable load moment, the allowable moment
of inertia is not always satisfied.
Fig. 2.1.2 Allowable Load on Wrist Axis
Fig. 2.1.3 Wrist load conditions
2.1.4 Flange Dimensions of Wrist Axis
View A
P
.
C
.
D
.
6
7
φ
φ57 H7
4.5
4
5
°
(equally spaced)
A
2xφ6 H7 6 Deep
4XM5 10 Deep
(equally spaced)
Fig. 2.1.4 Flange Dimensions of Wrist Axis (unit : mm)
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