6. Life
77
[Load coefficient f
w
]
,
t is a coefficient to consider the life drop due to operational conditions.
Load coefficient
f
w
Operational Conditions
Reference for
acceleration/deceleration
1.0 to 1.5
Small vibration or impact in slow operation
0.5G or less
[Attachment coefficient f
Į
]
Attachment coefficient f
Į
is a coefficient to consider the life drop due to the condition of actuator
attachment.
Attachment
coefficient f
Į
1.0
1.2
1.5
Attachment in whole
area
Attachment on both ends
Attachment on spots
Condition of
attachment
* As the figures are those in common for each manual, they are not for RCP5 Belt Type.
Replace to figures for RCP5 Belt Type and select the attachment coefficient.
* Even when in attachment in whole area and the actuator is seated in the whole length of the product,
select 1.2 or 1.5 for the attachment coefficient depending on the position of screw fixing.
* For attachment in whole area, use all of the through holes on the seat surface to fix.
6.2 Operation Life
The operation life depends on the moment to work. With light load, it will be longer than 5,000km, the
standard rated life. With no consideration of vibration and attachment condition, the operation life is
40,000km according to the calculation with formula in the previous page under assumption that 0.5C
M
(half of dynamic allowable moment) of moment is applied on. It shows that it can be 8 times longer than
the standard rated life, which is 5,000km.
