Bellows shaft coupling
Key product advantages are
- Backlash free operation
- Torque range : 18 to 5000 Nm
- Torsionally stiff
- Maintenance free
- To suit shaft sizes from 1mm to 100mm (H7)
- Suitable for high temperatures from -30C to +120C
- Corrosion resistant
Metal 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.
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Bellows shaft couplings - Basic model sizes
| Model type | Outside diameter (mm) | Total Length (mm) Options | Available Bore Sizes (mm) |
| HMB | 10 | 23 | 1mm to 4mm |
| HMB | 15 | 19,21,23,25,27,29 | 3mm to 8mm |
| HMB | 19 | 26,30 | 3mm to 12mm |
| HMB | 24 | 22,28,32 | 3mm to 14mm |
| HMB | 32 | 40,48 | 6mm to 18mm |
| HMB | 40 | 45,55 | 6mm to 24mm |
| HMB | 45 | 63,71 | 10mm to 25.4mm |
| HMB | 56 | 53,61,65,73 | 10mm to 30mm |
| HMB | 66 | 62,73,79,89 | 12mm to 32mm |
| HMB | 82 | 79,90,91,102 | 14mm to 42mm |
| HMB | 90 | 78,91,101,103 | 22mm to 45mm |
| HMB | 110 | 90,102,105,106 | 30mm to 60mm |
| HMB | 122 | 101,112,123 | 35mm to 65mm |
| HMB | 157 | 168,170,206 | 40mm to 80mm |
| HMB | 208 | 206 | 50mm to 80mm |
Other sizes on request . Some sizes are directly interchangeable with more expensive alternatives from well known brands.