Siemens FLENDER H SH Series - Page 54

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BA 5030 en 02/2013
tt
*)*)
m
s
m
s s
Fig. 45: Hollow shaft with parallel keyway
*
)
2 threads offset 180°
Table 15: Threaded holes on the end faces of the gearunit hollow shafts
Gearunit
size
m
mm
s t
mm
Gearunit
size
m
mm
s t
mm
4 95 M 8 14.5 12 215 M 12 19.5
5 115 M 8 14.5 13 230 M 12 19.5
6 125 M 8 14.5 14 250 M 12 19.5
7 140 M 10 17 15 270 M 16 24
8 150 M 10 17 16 280 M 16 24
9 160 M 10 17 17 300 M 16 24
10 180 M 12 19.5 18 320 M 16 24
11 195 M 12 19.5 19 ... 22 on request
If the support is provided not only by the hollow shaft, but also by the housing, as
shown in fig. 43, the forces used must not exceed the values given in the following
table 16.
Table 16: Maximum forcing pressures
Gearunit
size
Maximum forcing
pressure
N
Gearunit
size
Maximum forcing
pressure
N
4 22600 12 113600
5 33000 13 140000
6 37500 14 160000
7 50000 15 193000
8 56000 16 215000
9 65000 17 240000
10 82000 18 266000
11 97200 19 ... 22 on request
If the above values are exceeded, the housing, the hollowshaft bearings or other gear
components may be irreparably damaged. Before replacing the gear unit on the
machine shaft, always check the bearings for any signs of damage.
When using forcing screws or threaded spindles, the head of the thread pressing against the
driven machine should be rounded and well greased to reduce the risk of seizing at this point.