Siemens SIMODRIVE 6SN11 Series Planning Manual page 534

1PH7 AC Main Spindle Motors
3.2 Cantilever/axial force diagrams
Cantilever force
shaft height 160
F
DE bearing: 6312
NDE bearing: 6212
1PH7
Estimated lifetime for other operating conditions (F
L
Fig. 3-62
1PH7/3-106
Permissible cantilever force for a standard design.
[N]
QAS
8000
7000
6000
5000
1 2 3
F
1QAS
100
=
htot
q q q
1 2
+ +
L L L
h1 h2
Cantilever force diagram shaft height 160 for standard bearings
7 @ 10
4 5 6
F F
QAS 2QAS
x
; n)
QAS
q = Time for which this is effective
3 [%] under constant conditions
h3
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SIMODRIVE Planning Guide Motors (PJM) – 11.00 Edition
L 8000 h
h1
L 12000 h
h2
L 16000 h
h3
n [RPM]
3
F = 0.9 F
1QAS QAS
F = 1.1 F
2QAS QAS
x = 55 mm
6SN1197–0AA20
09.00