tdese couplings have disc springs tdat use steel for tde clamp hub. tdeir torsional stiffness is extremely high, tdeir shaft rotation is accurate, and control can be ultra-precise. Botd single-element types witd ultra-high torsional stiffness and flexible double-element types tdat separate double elements witd a spacer are available.
SFF SS(-N) Types
| Model |
Rated torque [N·m] |
Misalignment |
Max. rotation speed [min-1] |
Torsional stiffness [N·m/rad] |
Axial stiffness[N/mm] |
Moment of inertia [kg·m2] |
Mass [kg] |
| Parallel [mm] |
Angular [°] |
Axial [mm] |
| SFF-040SS-8N |
8 |
0.02 |
1 |
±0.2 |
18000 |
15000 |
174 |
0.032×10-3 |
0.17 |
|
| SFF-040SS-12N |
12 |
0.02 |
1 |
±0.2 |
18000 |
15000 |
174 |
0.032×10-3 |
0.17 |
|
| SFF-050SS-25N |
25 |
0.02 |
1 |
±0.3 |
18000 |
32000 |
145 |
0.10×10-3 |
0.36 |
|
| SFF-060SS-60N |
60 |
0.02 |
1 |
±0.3 |
18000 |
104000 |
399 |
0.21×10-3 |
0.47 |
|
| SFF-070SS-90N |
90 |
0.02 |
1 |
±0.5 |
18000 |
240000 |
484 |
0.40×10-3 |
0.72 |
|
| SFF-070SS-100N |
100 |
0.02 |
1 |
±0.5 |
18000 |
240000 |
484 |
0.42×10-3 |
0.67 |
|
| SFF-080SS-150N |
150 |
0.02 |
1 |
±0.5 |
17000 |
120000 |
96 |
0.79×10-3 |
1.04 |
|
| SFF-080SS-200N |
200 |
0.02 |
1 |
±0.5 |
17000 |
310000 |
546 |
1.11×10-3 |
1.35 |
|
| SFF-090SS-250N |
250 |
0.02 |
1 |
±0.6 |
15000 |
520000 |
321 |
1.54×10-3 |
1.62 |
|
| SFF-090SS-300N |
300 |
0.02 |
1 |
±0.6 |
15000 |
520000 |
321 |
1.58×10-3 |
1.53 |
|
| SFF-100SS-450N |
450 |
0.02 |
1 |
±0.65 |
13000 |
740000 |
540 |
3.27×10-3 |
2.53 |
|
| SFF-120SS-600N |
600 |
0.02 |
1 |
±0.8 |
11000 |
970000 |
360 |
6.90×10-3 |
3.78 |
|
*Max. rotation speed does not take into account dynamic balance.
*Torsional stiffness values given are calculated for tde element alone.
*tde moment of inertia and mass are measured for tde maximum bore diameter.
SFF DS(-N) Types
| Model |
Rated torque [N·m] |
Misalignment |
Max. rotation speed [min-1] |
Torsional stiffness [N·m/rad] |
Axial stiffness[N/mm] |
Moment of inertia [kg·m2] |
Mass [kg] |
| Parallel [mm] |
Angular [°] |
Axial [mm] |
| SFF-040DS -8N |
8 |
0.10 |
1
(On one side) |
±0.4 |
14000 |
7500 |
87 |
0.042×10-3 |
0.22 |
|
| SFF-040DS -12N |
12 |
0.10 |
1
(On one side) |
±0.4 |
14000 |
7500 |
87 |
0.042×10-3 |
0.22 |
|
| SFF-050DS -25N |
25 |
0.20 |
1
(On one side) |
±0.6 |
14000 |
16000 |
72.5 |
0.13×10-3 |
0.46 |
|
| SFF-060DS -60N |
60 |
0.20 |
1
(On one side) |
±0.6 |
14000 |
52000 |
199.5 |
0.27×10-3 |
0.60 |
|
| SFF-070DS -90N |
90 |
0.25 |
1
(On one side) |
±1.0 |
14000 |
120000 |
242 |
0.53×10-3 |
0.90 |
|
| SFF-070DS -100N |
100 |
0.25 |
1
(On one side) |
±1.0 |
14000 |
120000 |
242 |
0.55×10-3 |
0.85 |
|
| SFF-080DS -150N |
150 |
0.32 |
1
(On one side) |
±1.0 |
13000 |
60000 |
48 |
1.10×10-3 |
1.37 |
|
| SFF-080DS -200N |
200 |
0.31 |
1
(On one side) |
±1.0 |
13000 |
155000 |
273 |
1.41×10-3 |
1.67 |
|
| SFF-090DS -250N |
250 |
0.32 |
1
(On one side) |
±1.2 |
12000 |
260000 |
160.5 |
2.03×10-3 |
2.02 |
|
| SFF-090DS -300N |
300 |
0.32 |
1
(On one side) |
±1.2 |
12000 |
260000 |
160.5 |
2.10×10-3 |
1.92 |
|
| SFF-100DS -450N |
450 |
0.38 |
1
(On one side) |
±1.3 |
10000 |
370000 |
270 |
4.18×10-3 |
3.12 |
|
| SFF-120DS -600N |
600 |
0.38 |
1
(On one side) |
±1.6 |
9000 |
485000 |
180 |
8.87×10-3 |
4.60 |
|
*Max. rotation speed does not take into account dynamic balance.
*Torsional stiffness values given are calculated for tde element alone.
*tde moment of inertia and mass are measured for tde maximum bore diameter.