Mitsubishi Electric RH-12FH Series, Instruction Manual

Page: 115 / 146

5 Maintenance and Inspection
Maintenance and inspection procedures 5-102
［Caution］
・ The brand name of the grease shown in the
Table 5-5 is the grease put in at shipping.
・The lubrication time is a cumulative value of the operation at the maximum speed. If the operation has been sus
-
pended, or if the designated speed is slow, the lubrication time can be lengthened in proportion.
・ Depending on the robot operation state, the lubrication time will fluctuate, so determine the time according to
the state so that the grease does not run out.
For the shaft, the lubrication interval should be shorter than one in
Table 5-5 when the operation is repeated
with a short stroke.
･ By the maintenance forecast function of RT ToolBox2 (option) computes the guide of the lubrication hours put
together with the customer's operation status.
・ The numbers in the Table 5-5 correspond to the supply positions in Fig. 5-17 .
・When the specified time limit (24,000 Hr) is due, the overhaul work to replace internal grease is required. For the
J1/J2 axis reduction gears, if the overhaul cannot be conducted at the specified timing, lubricate them at the
lubrication interval in
Table 5-5 . Please ask dealer for more details about overhaul.
(2) Lubrication method to the J1, J2 axis
1) Turn off the controller's power supply.
2) Refer to the
"Fig.5-4 ： Installing/removing the cover" and remove the covers.
3) In type B robot, remove the screw from the J1 axis lubrication port, and install the attached grease nipple.
Securely tighten the grease nipple by 4.7 N·m to 6.3 N·m.
4) Insert the grease shown in Table 5-5 using a grease gun from the lubrication grease nipple. Add only the
specified amount of grease. Adding excess grease may cause grease to leak.
Use manual grease gun, and inject grease with pressure 0.03Mpa or less. Do not use
the grease gun, which derived by the factory air presser to avoid injecting by too high
pressure.
A grease gun that fits the grease nipple is required.
Recommended grease gun: KH-120 (amount: 140ml) or KH-32 (amount: 200ml)
(manufacture: Yamada Corporation Inc.,)
The grease guns come with a short nozzle (HSP-1) as standard. If this short nozzle
does not reach the desired areas, depending on the robot model and installation loca
-
tion, it may be useful to use a long nozzle (HSP-2).
5) In type B robot, removes the grease nipple installed above and installs the original screw. Securely tighten
the screw by 4.7 N·m to 6.3 N·m.
6) Install the removed cover as before.
RH-6FH series
<1>
J1 axis reduction
gears
Note1)
Grease nipple
WA-610(Only addition)
4B No.2
(Harmonic Drive Systems Inc.)
24,000 Hr 12 g
<2> J2 axis reduction gears
Grease nipple
WB-610(Only addition)
24,000 Hr 8 g
No.2 arm
cover U
<3> Shaft （ball spline）
Wipe the old grease,
and applies Multemp PS2
(KYODO YUSHI CO., LTD.)
Every 2,000km
movement
1 g
<4> Shaft （ball screw） 1 g
RH-12FH/20FH series
<1> J1 axis reduction gears
Grease nipple
WA-610(Only addition)
4B No.2
(Harmonic Drive Systems Inc.)
24,000 Hr 16 g Battery cover
<2> J2 axis reduction gears
Grease nipple
WB-610(Only addition)
24,000 Hr 12 g
No.2 arm
cover U
<3> Shaft （ball spline）
Wipe the old grease,
and applies Multemp PS2
(KYODO YUSHI CO., LTD.)
Every 2,000km
movement
1 g
<4> Shaft （ball screw） 1 g
Note1)In type B robot, remove the screw from lubrication point and install the supplied grease nipple for supplying grease.
No. Parts to be lubricated Lubrication method
Lubrication oil
Default charge amount
(maker)
Lubrication
interval
Lubrication
amount
guide
Cover to
remove
CAUTION