Metal Bellows Couplings BK
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Bellows Coupling Model BK 7 with expanding shaft
Series from 15 - 300 Nm
Data table and Downloads Bellows Coupling BK 7 Series 15 - 300 Nm
|
Model BK 7
|
Series
|
|
15
|
30
|
60
|
150
|
300
|
| Rated torque (Nm) |
TKN |
15 |
30 |
60 |
150 |
300 |
| Overall length (mm) |
A |
45 |
52 |
53 |
61 |
62 |
72 |
71 |
83 |
84 |
98 |
| Outside diameter (mm) |
B |
49 |
55 |
66 |
81 |
110 |
| Fit length (mm) |
C1 |
22 |
27 |
32 |
36 |
43 |
Inner diameter possible from
Ø to Ø H7 (mm) |
D1 |
8-28 |
10-30 |
12-37 |
19-42 |
30-60 |
| Fit length (mm) |
C2 |
20 |
25 |
27 |
32 |
45 |
Shaft Diameter possible from
Ø to Ø h7 (mm) |
2 |
13-25 |
14-30 |
23-38 |
26-42 |
38-60 |
| Fastening screws ISO 4762 |
E1/2 |
M5 |
M6 |
M8 |
M10 |
M12 |
| Tighting torque of the Fastening screws (Nm) |
E1/2 |
8 |
14 |
38 |
65 |
120 |
| Distance between centers (mm) |
F |
17 |
19 |
23 |
27 |
39 |
| Distance (mm) |
G |
6.5 |
7.5 |
9.5 |
11 |
13 |
Moment of interia
(10-³ kgm²) |
Jges |
0.07 |
0.08 |
0.14 |
0.15 |
0.23 |
0.26 |
2.2 |
2.4 |
6.5 |
8.9 |
Hub material (standard)
(steel on request) |
|
Al |
Al |
Al |
Steel |
Steel |
| approx. weight (kg) |
|
0.15 |
0.3 |
0.4 |
1.7 |
4 |
Torsional stiffness
(10 ³ Nm/rad) |
CT |
20 |
15 |
39 |
28 |
76 |
55 |
175 |
110 |
450 |
350 |
| axial (mm) |
max.
values |
1 |
2 |
1 |
2 |
1.5 |
2 |
2 |
3 |
2.5 |
3.5 |
| lateral (mm) |
0.15 |
0.2 |
0.2 |
0.25 |
0.2 |
0.25 |
0.2 |
0.25 |
0.25 |
0.3 |
| axial spring stiffness (N/mm) |
Ca |
20 |
12 |
50 |
30 |
72 |
48 |
82 |
52 |
105 |
71 |
| lateral spring stiffness (N/mm) |
Cr |
315 |
108 |
730 |
230 |
1200 |
380 |
1550 |
435 |
3750 |
1050 |
Downloads
short version |
15
|
30
|
60
|
150
|
300
|
| 2D-DXF (ZIP folder) |
|
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|
|
|
| 3D-EXE (Viewer) |
|
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| 3D-STEP (ZIP folder) |
|
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|
|
Downloads
long version |
15
|
30
|
60
|
150
|
300
|
| 2D-DXF (ZIP folder) |
|
|
|
|
|
|
| 3D-EXE (Viewer) |
|
|
|
|
|
|
| 3D-STEP (ZIP folder) |
|
|
|
|
|
|
