Epson LS20-B Series

Maintenance 5. Joint #1
98
LS20-B R ev.4
(5)
Secure
the cross roller bearing to the circular
spline
.
4-M4×20
Tightening torque: 4.0 N·m (40.8 kgf·cm)
(6)
Secure
the Top Plate to the circular spline.
Loosely f
asten all bolts in a crisscross pattern so
that
the bolts will be fastened evenly. Then,
using a torque wrench,
tighten each bolt securely
in a crisscross pattern
at the torque specified in
the table below.
16-M5×30
To p plate
Reduction
Gear Unit
Item Bolt type Bolts Tightening torque
Joint #1 reduction gear unit
M5×30
16
10.0 N⋅m (102 kgf⋅cm)
Be careful not to apply too much force since it may damage the parts
.
(7)
Apply grease (SK
-1A) inside the flexspline.
Grease volume : 80 g
(8)
Mount the spacer to the reduction gear unit.
H
exagon socket head cap bolts: 4-M4×15
Tightening torque: 5.5 N·m (56.1 kgf·cm)
Hexagon socket head cap bolts: 8-M5×40
Tightening torque: 10.0 N·m (102 kgf·cm)
8-M5×40
Spacer
Reduction
Gear Unit
4-M4×15
(9)
Mount the Joint #1 motor.
Follow the installation steps in Maintenance: 5.1 Replacing Joint #1 Motor.

NOTE