Epson T3 Series User Manual

5. General Maintenance
Safety and Installation (T, VT / EPSON RC+ 7.0) Rev.15 101
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 ± 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)
Refer below for the set screw.
Set Screw Tightening Torque
M4
2.4 ± 0.1 N⋅m
(26 ± 1 kgf⋅cm)
M5
4.0 ± 0.2 N⋅m
(41 ± 2 kgf⋅cm)
The bolts aligned on a circumference should be fastened in a crisscross pattern as
shown in the figure below.
1
5
3
7
2
6
4
8
Bolt hole
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.

Epson T3 Series Specifications

General

Brand	Epson
Model	T3 Series
Category	Robotics
Language	English