Siemens SIMOTICS M-1PH8 - Operation; Safety guidelines in operation

Formula symbol Unit Description
t
1
... t
n
% Time percentage of the bearing load
n
1
... n
n
r/min Operating speed
You therefore calculate an average speed from the di󹪜erent speeds according to their time
percentages.
Table 4-17 Recommended bearing change intervals at maximum speed
Shaft height Bearing version Maximum
speed

n
max
r/min
Statistical
bearing
service life
L
10h
h
Recommended bearing replacement in‐
terval
t
LW
h
Permanent lubrica‐
tion
Relubrication
     
80 Performance 15,000 8000 8000 -
High Performance 20,000 8000 8000 -
100 Performance 12,000 8000 8000 -
High Performance 18,000 8000 8000 -
132 Performance 10,000 8000 8000 -
High Performance 15,000 8000 8000 -
160 Performance 9000 8000 8000 -
High Performance 10,000 8000 8000 -
Table 4-18 "Premium Performance" bearing version, maximum speed and bearing change intervals
Shaft height Maximum speed
n
max
r/min
Average operating speed
n
m
r/min
Recommended bearing replace‐
ment interval
t
LW

h
with sealing air
(Option Q12)
without seal‐
ing air
80 24,000 <16,000 12,000
<19,200* 10,000 8000
24,000 7000 4000
Speed backlash with:
t1=10min, n1=0
t2=30min, n2=16,000r/min
t3=60min, n3=24,000r/min
Mechanical properties
4.4Types of bearing
1PH8 SIMOTICS M main motors
Con󹪝guration Manual, 12/2022, A5E51895839A 89