Epson G20 Series

Maintenance 5. Arm #1
144 G10 / G20 Rev.20
Joint #1
reduction gear
unit
Installation
(1)
A new reduction gear unit contains the
parts shown
in the picture on the right
when it is unpacked.
(2)
Apply LOCTITE 241 on the screws.
Set the hole on
the circular spline and the tap hole
on the base
.
Apply
grease (SK-1A) on the gear side of the
circular spline.
Loosely
secure all bolts in a crisscross pattern so
that the bolts will be
secured evenly. Then, using a
torque wrench,
tighten each bolt securely in a
crisscross
pattern at the torque specified in the table
below
.
Circular
spline
16-M5×25
Item Bolt type Number of bolts Tightening torque
Joint #1 reduction gear unit
M5×25 16 10.0 N⋅m(101.9 kgf⋅cm)
M8×20 8
30.0 N⋅m(305.9 kgf⋅cm)
(3)
Apply LOCTITE 241 on the screws.
Set the grip
ring by aligning it with the tap hole.
Apply
grease (SK-1A)
on the gear side of the
flexspline.
Set the flexspline by aligning it with the tap hole.
Align the position of
the air vent of the spacer and
secure the flexspline
.
Flexspline
8-M8×20
Spacer
Grip ring
(4)
Apply grease (SK
-1A) inside the flexspline.
Grease volume: 43 g
(5)
Apply grease to the bearing part of the waveform generator.
(6)
Execute steps from (2) to (
4) in Maintenance: 5.1 Replacing Joint #1 Motor.
(7)
Turn and secure the
Manipulator to the mounting position.
(8)
Execute steps from (
5) to (7) in Maintenance: 5.1 Replacing Joint #1 Motor.