9-8
155492-1CD
HW0484820
SDA20
9 Maintenance and Inspection
9.2 Notes on Maintenance Procedures
4. Before the air outlet is stoppered, operate the grease-replenished axis for a few
minutes.
5. Remove the grease zerk from the grease inlet, apply Three Bond 1206C to the thread
part of the hexagon socket head cap screw M6 and reinstall the screw. Tighten the
screw to a tightening torque of 10 N·m (1.0 kgf·m).
6. Reinstall the plug LP-M5 on the air outlet.
Grease Exchange for the Actuator (S-, L-, 7th-, U-axis)
1. When the ambient temperature is 20
°
C or lower, operate the axis for grease exchange
for a few minutes.
Change the posture to make the grease inlet of the axis face downward. If it is impos-
sible to make it face downward completely due to environment conditions, etc., change
the posture to make it face as downward as possible.
2. Remove the plug LP-M5 from the grease exhaust port.
3. Remove the hexagon socket head cap screw M6 from the grease inlet and install the
grease zerk A-MT6X1.
(The grease zerk is delivered with the manipulator.)
4. Inject grease with the grease zerk. Refer to " Table. 9-3 Grease Type and Amount of
5. The grease exchange is complete when new grease appears from the grease exhaust
port. The new grease can be distinguished from the old grease by color.
6. Put a plastic bag on the grease exhaust port. (Keep the exhausted grease to measure
the amount of grease exhausted during running-in.)
7. Perform running-in operation of the axis with grease injected for approximately 10
minutes to discharge excess grease. (Refer to " Table. 9-4 Rough Standard of the
Amount of Exhausted Grease ".)
For the operation pattern of the running-in, if possible, set the speed to 100% and the
amount of movement to 40000 pulses or more. Also, set the timer of JOB to avoid
overheat.
If the amount of exhausted grease is less than the amount shown in Table 9-4 even
after the running-in operation for 10 minutes, discharge excess grease as follows:
(1) Remove the grease zerk from the grease inlet.
(2) Supply air from the grease inlet to discharge excess grease from the grease
exhaust port. At this time, set the air pressure to 0.03 MPa or less.
(3) If the amount of exhausted grease is still less than the amount shown in Table 9-4
even after discharging excess grease once, perform running-in operation one cycle,
and then perform the step (2) again. Supply air while performing the oscillating
operation of the grease-injected axis to discharge grease faster if safety is ensured
to do so under the relevant local safety standards.
• Never fail to remove the plug from the grease exhaust port. If grease is added with the
plug on, internal pressure shall increase and cause a damage.
• If the temperature of grease is low, the viscosity of it is high, and the old grease may not
be exhausted enough. Thus, operate the axis for a few minutes before exchanging
grease.
NOTE
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