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Tab. 1: Assembly tolerances
FC-A
15 G
25 G
35 G
45 G
65 G
75 G
The depth of the output shaft flange recess must be equal to or greater than dimension "C", acc. to
Tab. 1. To ensure the correct clearance the output flange dimension "M" must be maintained.
The recommended concentricity and parallelism accuracy of the mounting components (housing and
output shaft) should be within the figures "a" and "b", acc. to tab. 1. The recommended location diam-
eters for the housing output flange and motor input adaptor are "A", "O" and "U", acc. to Tab. 1
The location diameter "A" should be fixed to the casing. As there is no sealing between output flange
and ring gear housing, the user should provide sealing when assembling (e.g. liquid sealing Loctite
No. 518 or 573) or O-Ring on customer's housing.
Motors with standard flange concentricity and squareness tolerances according to DIN 42955 are
acceptable for standard applications. For high precision applications we recommend the use of
motors with reduced concentricity and squareness tolerance in accordance with DIN 42955 R.
Allowable transmitted torque could be limited by mounting bolts. The recommended bolt grade, quantity,
size and tightening torques for the output flange and ring gear housing are shown in Tab. 2.
Tab. 2: Fixing
FC-A
15G
25G
35G
45G
65G
75G
* Screw grade 12.9 - All screws to be used!
9.2 FC-A a
dditional dowel pins for applications with peak torques higher than those given in Tab. 2
In cases where higher torques than those given in Tab. 2 occur (please refer also to 6.5) or if the
tightening torques of the fasteners can not be relied upon, the use of dowel pins is neccesary.
In this case, please contact Sumitomo Drive Technologies.
In any case the allowable peak torques for emergency stops given in our catalogue are valid.In any case
the allowable peak torques for emergency stops given in our catalogue are valid. See tab. 3 & graph.
Tab. 3
FC-A
Number of
15G
25G
35G
45G
65G
75G
FC_GB_01_05 NO.991051
F I N E C Y C L O O p e r a t i n g M a n u a l
Ø d
C
max.
min.
90
5
115
6
144
6
182
8
226
8
262
8
Slow speed shaft bolts
Number of
Size
Tightening torque *
bolts
DIN 4762
12
M5
12
M6
12
M8
12
M10
12
M12
12
M12
Slow speed shaft bolts
Bolt size
Number of
bolts
DIN 4762
dowel pins
10
M5
2
10
M6
2
10
M8
2
10
M10
2
10
M12
2
9
M12
3
Location diameter Ø [mm]
M
Ø A
Ø O
+ 0,3
H7/h7
M7/h7
15,5
115
45
21
145
60
24
180
80
27
220
100
33
270
130
38
310
150
Ring gear housing bolts
Number of
[Nm]
bolts
9.2
8
16
8
39
8
77
12
135
12
135
12
Size of
Number of
dowel pins
bolts
(mm)
6
6
8
6
10
6
12
10
16
10
16
9
Issue: 01/05
Concentricity
Ø U
Ø a
H7/h7
85
0.030
110
0.030
135
0.030
170
0.030
210
0.030
235
0.030
Size
Tightening torque
DIN 4762
* [Nm]
M5
9.2
M6
16
M8
39
M8
39
M10
77
M10
77
Ring gear pin
Bolt size
Number of
DIN 4762
dowel pins
M5
2
M6
2
M8
2
M8
2
M10
2
M10
3
page 7
Parallelism
b/ with Ø
0.025/ 87
0.035/112
0.040/137
0.050/172
0.065/212
0.070/237
Allowable
transmitted torque
by bolts [Nm] T2t
470
830
1900
3550
7000
8000
Size of
dowel pins (mm)
6
8
10
10
14
16
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