Mean dynamic equivalent load
(In case of staged fluctuation)
(3-5)
P
m
:
mean dynamic equivalent load
N
P
1
:
dynamic equivalent load applied for
t
1
hours at speed
n
1
N
P
2
:
dynamic equivalent load applied for
t
2
hours at speed
n
2
N
: :
P
n
:
dynamic equivalent load applied for
t
n
hours at speed
n
n
N
p
:
for ball bearings
p
= 3
for roller bearings
p
= 10/3
(Reference) Mean speed
n
m
can be calculated using the following equation:
(3-5)(3-5)
