FlexLink YOUTILIZE - Manual (Page 121)

Providing production efficiency
Page 121 of 125
SI(Ah)
Starting point,
[Y
0
;X
0
]
Inspection point,
[Y
1
;X
1
]
Estimated lifetime (SI),
[Y
Lim
;X
Lim
]
Wear (mm)
Picture 5: Graph SI(Ah) vs wear(mm)
The starting point is called [Y
0
;X
0
]. This is the time when a new component is installed. Both the
Service Index (Y
0
) and the wear (X
0
) is zero because the conveyor has not been run at all yet. When
an inspection is done we have an actual wear value of the component, X
1
. The corresponding
accumulated SI value is called Y
1
.
With this set the estimation of the Service Index for the component can be calculated.
x *
X
Y
f(x) Y SI
1
1
= = =
Estimated Lifetime in Service Index, SI
lim
(Ah)
If we use this formula we can estimate the point where the wear is reaching its limit value. The limit
value of the wear is called X
Lim
and the corresponding Service Index Y
Lim
. There are four wear
measures and one SI
limit
connected to each one.
• SI
limit_chain top
• SI
limit_chain tab
• SI
limit_slide rail top