SIEMENS
2/8
Siemens MD 50.11 · 2015
Configuring guide
Configuring a gearbox
2
■
Gearbox fastening
Gearboxes and geared motors are normally secured by bolts of
grade 8.8.
When the largest possible motor size is attached to the gearbox
and with a higher load classification, elevated levels of vibration
and/or smaller service factors, further measures need to be
taken for flange-mounted designs of gearboxes and geared
motors.
We recommend that you consider the following possibilities:
•
Selection of a larger output flange
•
Use of bolts of grade 10.9
•
Use of an anaerobic adhesive to improve the friction lock
between the gearbox and the mounting surface
Recommended bolt quality for DZ/ZZ and DF/ZF:
Helical gearboxes DZ/ZZ and DF/ZF with the smallest available
output flanges must be bolted to the mounting surface with bolts
of grade 10.9 (
see table
).
Recommended bolt quality for FF/FAF and KF/KAF:
Parallel shaft gearboxes FF/FAF and bevel gearboxes KF/KAF in
combination with larger motors must be bolted to the mounting
surface with bolts of grade 10.9 (
see table
).
Gearbox type
Flange
Strength class of
bolt/nut
DZ/ZZ29
DF/ZF29
A120
10.9
1)
DZ/ZZ39
DF/ZF39
A120
10.9
1)
DZ/ZZ49
DF/ZF49
A140
10.9
DZ/ZZ59
DF/ZF59
A160
10.9
DZ/ZZ69
DF/ZF69
A200
10.9
DZ/ZZ79
DF/ZF79
A250
10.9
DZ/ZZ89
DF/ZF89
A300
10.9
DZ/ZZ109
DF/ZF109
A350
10.9
DZ/ZZ129
DF/ZF129
A350
10.9
DZ/ZZ149
DF/ZF149
A450
10.9
DZ/ZZ169
DF/ZF169
A450
10.9
DZ/ZZ189
DF/ZF189
A550
10.9
1)
Use suitable washers underneath the bolt head
Gearbox type
Flange
Motor size
63
71
80
90
100
112
132
160
180
200
225
250
FF/FAF39
KF/KAF39
A160
8.8
8.8
8.8
10.9
10.9
FF/FAF49
KF/KAF49
A200
8.8
8.8
8.8
8.8
10.9
10.9
FF/FAF69
KF/KAF69
A250
8.8
8.8
8.8
8.8
8.8
8.8
10.9
FF/FAF79
KF/KAF79
A250
8.8
8.8
8.8
8.8
8.8
8.8
10.9
FF/FAF89
KF/KAF89
A300
8.8
8.8
8.8
8.8
10.9
10.9
10.9
FF/FAF109
KF/KAF109
A350
8.8
8.8
8.8
8.8
8.8
10.9
10.9
FF/FAF129
KF/KAF129
A450
8.8
8.8
8.8
8.8
8.8
8.8
8.8
FF/FAF149
KF/KAF149
A450
8.8
8.8
8.8
8.8
8.8
8.8
10.9
10.9
10.9
FF/FAF169
KF/KAF169
A550
8.8
8.8
8.8
8.8
10.9
10.9
10.9
10.9
FF/FAF189
KF/KAF189
A660
8.8
8.8
8.8
8.8
8.8
8.8
10.9
© Siemens AG 2015