Designation Article number Quantity
Optigear ALR 320 (>>> 12.2 "Aux-
iliary and oper-
ating materials
used"
Page 336)
Initial fill-
ing quan-
tity: 2.49 l
Tightening torques
The tightening torques can be found under: (>>> 12.1 "Tightening
torques" Page 335)
These are valid for screws and nuts where no other specifications are giv-
en.
Screws of strength class 10.9 and higher as well as screws with test cer-
tification may only be tightened once with the rated tightening torque.
When the screws are first slackened they must be replaced with new
ones.
Precondition
• The robot is in a position in which the oil filler hole and oil drain hole
on the gear unit of axis 2 are accessible.
• The gear unit is at operating temperature.
Work safety
CAUTION
High oil and surface temperatures after the robot has stopped op-
erating
If the oil change is carried out immediately after the robot has stopped
operating, the oil temperature and the surface temperature are liable to
be high. Touching them may result in burns.
• Wear protective gloves.
WARNING
Danger to life and limb due to unintended robot motions
Unintended robot motions may result in death, severe injuries and dam-
age to property.
• Secure the robot by pressing the EMERGENCY STOP device.
• Warn all persons concerned before starting to put it back into opera-
tion.
8.4.1 Draining the gear oil from A2
Procedure
1. Place a suitable receptacle under the rotating column
(>>> 8.4.1 "Draining the gear oil from A2" Page 201).
2. Remove the lower M18x1.5 magnetic screw plug on the rotating col-
umn.
It is easier to drain the oil if an M18x1.5 oil drain tube is screwed into
the oil drain hole.
3. Remove the upper M18x1.5 magnetic screw plug for venting and
catch the oil as it drains out.
4. Store or dispose of oil in accordance with the pertinent regulations.
KR IONTEC
MA KR IONTEC V4 | Issued: 11.05.2021 www.kuka.com | 201/344
Maintenance
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