Calculation
T
i
=
10 • 4 • 8 • 250
60 • 4
Tab. 47
With operating time read: 334
With operating time estimated: 333,3
In the operating time as read / estimated above, the chain hoist has transported the following loads:
Fig. 40
B Load L Load
tTime
Adding the load spectrum modules k
m
together results in the load spectrum factor k
mi
= 0,119
Thus, the actual duration of service amounts to S [h] = k
mi
x T
i
x f =
● with operating time read 0,119 x 334 x 1,1 = 43.72
● with operating time estimated 0,119 • 333.3 • 1,2 = 47.6
For classification in FEM group of mechanisms 1Am (see DC-Com data plate) with a theoretical duration of service
of 800 hours (see table below) the hoist has a theoretical remaining duration of service of
● with operating time read 756,28 hours
● with operating time estimated 752,4 hours
Documentation:
Enter these values in your test and inspection booklet or crane installation test and inspection booklet. This entry
may appear as follows:
Date Operating hours Load spectrum module km [%] Load spec‐
trum factor
Act.
duration of
service
Theor.
duration of
service
Remaining
duration of
service
from to T
i
value
[h]
full 3/4 1/2 1/4 Without k
mi
f S
[h]
D [h]/Group
of mech.
D - S
[h]
3.1.- 30.12.- read 334
5 10 20 15 50
0,119 1,1 43,72 800/1Am 756,28
0,05 0,042 0,025 0,002 -
3.1.- 30.12.- estimated 333.3
5
10 20 15 50
0,119 1,2 47,6 800/1Am 752,4
0,05
0,042 0,025 0,002 -
Tab. 48
21480244/181209
73
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