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Epson GX Series Manual
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5.3.4 Tightening the Hexagon Socket Head Cap BoltsHexagon socket head cap bolts (referred to as "bolts" below) are used in locations where mechanical strength is required.During assembly, these bolts are tightened at the tightening torques shown in the following table.Unless otherwise specified, when retightening these bolts in the work procedures described in this manual, use a torque wrenchor similar tool to obtain the tightening torques in the following table.Bolt Tightening TorqueM3 2.0 ± 0.1 N·m (21 ± 1 kgf·cm)M4 4.0 ± 0.2 N·m (41 ± 2 kgf·cm)M5 8.0 ± 0.4 N·m (82 ± 4 kgf·cm)M6 13.0 ± 0.6 N·m (133 ± 6 kgf·cm)M8 32.0 ± 1.6 N·m (326 ± 16 kgf·cm)M10 58.0 ± 2.9 N·m (590 ± 30 kgf·cm)M12 100.0 ± 5.0 N·m (1,020 ± 51 kgf·cm)For set screws, refer to the following table.Set Screw Tightening TorqueM4 2.4 ± 0.1 N·m (26 ± 1 kgf·cm)M5 3.9 ± 0.2 N·m (40 ± 2 kgf·cm)M6 8.9 ± 0.4 N·m (82 ± 4 kgf·cm)It is recommended that bolts arranged in a circular pattern be secured in place by tightening in criss-cross order as shown in thefigure.Symbol Descriptiona Bolt holeWhen securing the bolts, do not tighten the bolts all at once, but tighten them in two or three separate rounds with an Allenwrench, and then use a torque wrench or similar tool to secure them at the tightening torques shown in the table above.Industrial Robot: SCARA Robots GX series Manual Rev.7383 |
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