
Scara Mechanical Unit Manual
Document Version: V1.1(
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38
Bolt
Tightening Torque
M10
73.5±3.43 N·m
M12
129±6.37 N·m
Refer below for reducer tightening bolt.
Bolt
Tightening Torque
M3
2.35 N.m
M4
5.4 N.m
M5
10.8 N.m
M6
18.36 N.m
Refer below for the set screw.
Set screw
Tightening Torque
M3
0.9 N·m
(
9kgf·cm
)
M4
2.5 N·m
(
26 kgf·cm
)
M5
3.9 N·m
(
40 kgf·cm
)
The bolts aligned on a circumference should be fastened in a crisscross pattern as shown in the figure
below.
Do not fasten all bolts securely at one time. Divide the number of times that the bolts are
fastened into two or three and fasten the bolts securely with a hexagonal wrench. Then, use a torque
wrench so that the bolts are fastened with tightening torques shown in the table above.
1
2
3
4
5
7
8
6
Threaded holes