Siemens
Bestell-Nr. / Order No. / no. de commande 2KG1900-4AA00-0AA0
7 / 19
04.2003
Deutsch / English / Français
Tightening torques for
flange
connection
(mounting codes B5, V1, V3)
Gearbox Bolt acc.
Washer DIN 125 Tightening torque
size DIN EN ISO 4762
in Nm
DIN EN ISO 4014
(grade 8.8)
S3 (4x)M8
A8,4
24
S4
(4x)M8
A8,4
24
S5 (4x)M10 A10,5
47
S6 (4x)M10 A10,5
47
S7 (4x)M12 A13
77
S8 (4x)M12 A13
77
S9 (4x)M12 A13
77
The drive shaft must be carefully cleaned to remove the corro-
sion protection before drive elements such as couplings, chain
sprockets, gear wheels or toothed belts are fitted.
Ensure the cleaning agent used will not damage the
sealing ring!
Drive elements may only be fitted or removed with suitable de-
vices, using a centre bore hole to DIN 332 in the journal shaft, if
necessary. It is advisable to heat the hub to approx. 100 °C.
The drive element must be fixed on the shaft in the position
specified for the drive arrangement. The manufacturer’s rec-
ommendations relating to pre-tension settings and mainte-
nance must be complied with in the case of chains and
wheels.
Helical worm geared motors with
hollow shaft
and
key
must
be fitted using a threaded pin and relevant thrust washer or a
hydraulic device. The machine shaft must feature a centre
bore hole with a thread to DIN 332 and be cleaned and lubri-
cated with a commercially available lubricant. The shaft must
be guided on both sides into the hollow shaft.
Fitting the helical worm geared motor:
1 Gearbox hollow shaft
3 Circlip DIN 472
5 Machine shaft
2 Thrust washer
4 Hexagon socket screw DIN 6912
Overview, fitting dimensions:
Gearbox size
d
s
M
l
l
1
mm
mm
mm
mm
S3
20
20
M6
100
33
25
25
M10
100
33
30
25
M10
109
33
S4
20
20
M6
100
33
25
25
M10
100
33
30
25
M10
100
33
S5
25
25
M10
109
31
30
25
M10
109
31
35
30
M12
109
31
S6
30
25
M10
124
35
35
30
M12
124
35
40
40
M16
124
35
S7
40
40
M16
124
35
45
40
M16
124
35
S8
40
40
M16
144
37
45
40
M16
144
37
S9
50
40
M16
154
39
60
50
M20
154
39
Fix the gearbox on the machine shaft against axial dis-
placement.
When fitting the helical worm geared motors with
hollow shaft
and
shrink disk connection
, also use threaded pin and thrust
washer.
• Before the gearbox is placed on the mating shaft, the in-
side of the hollow shaft and the outside of the mating shaft
must be degreased.
• Release the tension in the shrink disk by unscrewing all
tensioning screws a few turns anticlockwise. Slide the
gearbox, together with the shrink disk, onto the mating
shaft and position them. Slide the shrink disk inner ring up
to the stop on the hollow shaft.
• Tighten all tensioning screws equally until all the front
faces of the outer and inner ring are flush.
Hollow shaft with shrink disk
1 Machine shaft 3 Tapped hole for extractor screw 5 Inner ring
2 Tensioning screw 4 Outer ring
6 Gearbox hollow shaft
The reaction torque of
shaft-mounted gearboxes
is sup-
ported by a torque arm with a rubber buffer which is available
as an option.
Torque arm
Dimensions torque arm
Gearbox Tightening a c d
1
E h h
1
j k p w
1
size
torque
±
0,5
Nm
1)
mm mm mm mm mm mm mm mm mm mm
S3
24
209 15 12 96 32 19 17 37 130 100
S4
24
209 15 12 96 32 19 17 37 130 100
S5
47
250 17 12 105 32 19,5 17,5 37 160 109
S6
47
302 19 12 120 32 19 17 37 200 124
S7
77
310 21 12 120 32 21 19 37 200 124
S8
77
385 23 20 140 56 31,5 29,5 60 250 144
S9
77
393 23 20 150 56 31,5 29,5 60 250 154
1)
For connecting the torque arm to the gearbox
1
2
3
5
4
6
apply grease
ree from grease
free from grease
5
1
3
2
4
∅
d H7
∅
d
+0,
1
∅
d H7
l
1
l
l
1
270
o
Ø d
1
a
p
90
o
180
o
k
h
i
h
1
w
1
E
c
DIN 472 DIN 6912
s
