Estun SCARA ER Series, Руководство оператора

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MAINTENANCE
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5.3. Tightening Hexagon Socket Head Cap Bolts
Hexagon socket head cap bolts are used in places where mechanical strength is required. (A hexagon
socket head cap bolt will be called a “bolt” in this manual.)
These bolts are fastened with the tightening torques shown in the following table. When it is necessary to
refasten these bolts in some procedures in this manual (except special cases as noted), use a torque wrench
so that the bolts are fastened with the appropriate tightening torques as shown below.
Bolt Tightening Torque
M3 2.0 N·m
M4 4.0 N·m
M5
9.01
±
0.49 N·m
M6 15.6
±
0.78 N·m
M8 37.2
±
1.86 N·m
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.