MAINTENANCE MANUAL
176
STE 85357
In principle, grease should be applied to the ball screw spline unit every three months.
Be sure to apply grease whenever there is a shortage of grease.
At daily inspection also, make sure that the ball screw spline unit is filled with a
sufficient volume of grease.
Check the condition of anticorrosive in daily inspection. If anticorrosive is dried up,
apply it.
Table 4.7 Recommended anticorrosive (THL800, THL900, THL1000)
Recommended anticorrosive
Maker
KLUBER A20
NOK
WD-40
ST TRADING
Fig. 4.41 Applying anticorrosive and grease to ball screw spline unit
(THL800, THL900, THL1000)
1)
Remove the arm 2 cover (see “Para. 4.3.1, Arm 2 Cover.”)
2)
Connect the controller power supply plug and turn off the servo system.
3)
Move the arm to a position where Axis 3 can be moved over the full stroke by
hand.
4)
Push down the ball screw spline shaft to the lower limit while pressing the axis 3
brake release switch.
Apply a rust
inhibitor to the
end face as
well.
Apply grease to the
thread groove,
spline groove and
outer peripheral
portion uniformly.
Apply anticorrosive onto a
waste cloth, and wipe the
top and side surfaces of
the ball screw nut with it.
Upside (without arm 2 cover)
Apply anticorrosive onto a waste
cloth, and wipe the bottom and side
surfaces of the spline nut with it.
Downside