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09.00
1.4
Bearing concept
Standard:
Double–bearing design on the drive end (deep–goove ball bearings and roller
bearings). The double–bearing design is not suitable for couplings.
Bearing versions
Table 1-6
Bearing versions
Application
Belt drive
S
Minimum cantilever force requi-
red
S
For high cantilever forces
Coupling–out drive or planetary gearbox
S
Reduced cantilever force is
permissible
Increased maximum speed
S
Cantilever–free out–drive requi-
red, e.g. coupling
Bearing change in-
For single and double–bearing designs, for a cooling medium temperature of
+25 °C, bearing temperature +85 °C and horizontal mounting position.
tervals (t
)
LW
Table 1-7
Bearing change intervals for shaft heights 100, 132 and 160
Double–bearing design (stan-
dard)
Shaft
Average opera-
Average opera-
heights
ting speed
ting speed
[mm]
n
[]
m
100
n
< 2500
2500 < n
m
132
n
< 2000
2000 < n
m
160
n
< 1500
1500 < n
m
t
[h]
16000
LW
0.8 @ t
Grease change
interval
Siemens AG 2000 All rights reserved
SIMODRIVE Planning Guide Motors (PJM) – 11.00 Edition
Bearing design/
option
Standard
double–bearing design
K00, (K02, K03)
Single bearing design
L37
Single–bearing design
"spindle bearing de-
sign"
Single–bearing design (K00)
Average opera-
ting speed
n
[RPM]
n
[RPM]
m
m
n
< 4000
< 6000
m
m
n
< 3500
< 5500
m
m
n
< 3000
< 4500
m
m
8000
20000
( t
= bearing change interval)
LW
LW
6SN1197–0AA20
1PH4 AC Main Spindle Motors
1.4 Bearing concept
Bearing design/option
Drive end
Bearing design for increased
speeds (L37)
Average opera-
Average opera-
ting speed
ting speed
n
[RPM]
n
[RPM]
m
m
8000
n
4000 < n
< 7000
m
m
6000
n
3500 < n
< 6500
m
m
5000
n
3000 < n
< 5000
m
m
10000
16000
Non–drive end
1PH4
Average opera-
ting speed
n
[RPM]
m
8000 < n
m
<12000
6000 < n
m
<10000
5000 < n
m
<8000
8000
1PH4/1-9
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