52
9. Maintenance and Inspection
9. Maintenance and Inspection
9.1 Inspection Items and Schedule
Perform maintenance and inspection at the intervals specified below.
This schedule assumes that the actuator is operated eight hours a day.
If the actuator is operated at a higher utilization, such as when the machine is used continuously day and
night, reduce the inspection intervals accordingly.
Schedule
External visual inspection
Internal inspection
Greasing
(Note 1)
Start of work inspection
{
1 month inspection
{
3 month inspection
{
3 months after starting
operation
6 months inspection
{
{
(Note 2)
Every 6 month inspection
{
{
(Note 2)
Depends on grease
supply timing
(reference)
Note 1 Grease film may run out if the actuator is moved back and forth continuously over a distance
of 30mm or less. As a guide, perform a back-and-forth operation five times or so over a
distance of 50mm or more after a back-and-forth operation over such short distance has been
repeated
5,000 to 10,000 times. This will restore oil film.
Note 2 Check the condition of grease and wipe if off in case it is extremely dirty before supplying new
grease.
[Period of Grease Supply (reference)]
Supply grease in the earlier timing of either the operation distance or months described in the table
below.
Period of grease supply (reference)
Max. velocity of use [mm/s]
Operation distance
Months described
0 to 750 or less
1,250km
Above 750 to 1,000
2,500km
12 months
Warning:
x
The grease may be degraded if the actuator has got stored for 6 months or more.
Supply grease before starting to use. [Reference to 9.7 Grease Supply]
x
The speed of grease degradation differs depending on the environment of use
(temperature, humidity and ambient environment).
It is recommended to shorten the period of grease supply in case of use in bad
environment with high temperature, high humidity, high rate of dust and so on.
Also, it is recommended to improve the environment in case the color of the
grease changes remarkably due to bad environmental condition.
