Key product advantages are
Bellows shaft couplings deliver, high torsional rigidity, due to the bellows’ radial rigidity, and low side thrust due to the bellows’ lateral flexibility. Other coupling types have either low windup or low side thrust, but not both. Precision motion control applications require mechanically tight systems, especially between motors, driven loads, and feedback devices, to ensure accurate positioning. Such systems often require shaft couplings that are both torsionally rigid, to accurately transmit rotational position and laterally flexible to accommodate shaft misalignment. By the nature of the bellows design, these application requirements can be confidently mastered.
Bellows Only (without hubs) Available in Nickel or Stainless Steel

Bellows shaft couplings are used to connect two shafts together for the purpose of transmitting torque.
Bellows with hubs (hubs available in Aluminium , Stainless steel or Steel in set screw or clamp style fixing designs)
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If you require further technical information, please do not hesitate to contact our sales engineers who will be more than happy to help you with your selection. The following chart details some basic sizes and performance characteristics.
| Size | Torque TKN (Nm) |
Speed n1 (min-1) |
Torsional Stiffness (Nm/rad) |
Perm. Displacements | Finish Bore | Dimensions | ||||
| Axial (mm) | Radial (mm) | Angular (deg) | dmin | dmax | Length | Dia | ||||
| 16 | 5 | 14900 | 4500 | ±0,3 | 0,15 | 1,0 | 5 | 16 | 45 | 32 |
| 20 | 15 | 11950 | 9600 | ±0,4 | 0,15 | 1,0 | 8 | 20 | 55 | 40 |
| 30 | 35 | 8700 | 17800 | ±0,5 | 0,20 | 1,5 | 10 | 30 | 63 | 55 |
| 38 | 65 | 7350 | 37400 | ±0,6 | 0,20 | 1,5 | 14 | 38 | 69 | 65 |
| 45 | 150 | 5750 | 95800 | ±0,9 | 0,25 | 1,5 | 14 | 45 | 86,5 | 83 |
| 553 | 340 | 4800 | 144100 | ±1,0 | 0,25 | 1,5 | 15 | 55 | 111 | 100 |
| Size | Torque TKN (Nm) |
Speed n1 (min-1) |
Torsional Stiffness (Nm/rad) |
Perm. Displacements | Finish Bore | Dimensions | ||||
| Axial (mm) | Radial (mm) | Angular (deg) | dmin | dmax | Length | Dia | ||||
| 16 | 5 | 14900 | 3050 | ±0,5 | 0,20 | 1,5 | 5 | 16 | 49 | 32 |
| 20 | 15 | 11950 | 6600 | ±0,6 | 0,20 | 1,5 | 8 | 20 | 62 | 40 |
| 30 | 35 | 8700 | 14800 | ±0,8 | 0,25 | 2,0 | 10 | 30 | 72 | 55 |
| 38 | 65 | 7350 | 24900 | ±0,8 | 0,25 | 2,0 | 14 | 38 | 81 | 65 |
| 45 | 150 | 5750 | 64000 | ±1,0 | 0,30 | 2,0 | 14 | 45 | 103 | 83 |
| 553 | 340 | 4800 | 96100 | ±1,0 | 0,30 | 2,0 | 15 | 55 | 125 | 100 |
| Size | Bore Range and Respective Torques of Frictional Engagement of the Clamping Hub (Nm) | |||||||||||||||||||||||||
| Ø5 | Ø6 | Ø7 | Ø8 | Ø9 | Ø10 | Ø11 | Ø12 | Ø14 | Ø15 | Ø16 | Ø18 | Ø19 | Ø20 | Ø24 | Ø25 | Ø28 | Ø30 | Ø32 | Ø35 | Ø38 | Ø40 | Ø42 | Ø45 | Ø50 | Ø55 | |
| 16 | 8,5 | 8,8 | 9,1 | 9,4 | 9,7 | 9,9 | 10,2 | 10,5 | 11,1 | 11,4 | 11,7 | |||||||||||||||
| 20 | 17,6 | 18,1 | 18,6 | 19,0 | 19,5 | 20,5 | 21,0 | 21,4 | 22,4 | 22,9 | 23,3 | |||||||||||||||
| 30 | 33 | 34 | 35 | 36 | 36,4 | 38 | 38,5 | 39 | 42 | 42,5 | 44,5 | 46 | ||||||||||||||
| 38 | 84 | 85 | 87 | 92 | 93 | 97 | 99 | 101 | 105 | 109 | ||||||||||||||||
| 45 | 157 | 165 | 167 | 173 | 177 | 181 | 187 | 193 | 197 | 200 | 206 | |||||||||||||||
| 553 | 397 | 401 | 413 | 421 | 429 | 441 | 453 | 462 | 470 | 482 | 502 | 522 | ||||||||||||||
For those engineers familiar with the traditional electroforming process you might be interested to know that we also offer a new way of looking at both complexity of shape, wall thickness tolerance, integral strength and capability.

For further further details please follow the link to SPECIALIST ELECTROFORMS