Elastomer? Bellows? What is the best coupling technology for your motion control application? Each has its advantages, from torsional stiffness to vibration dampening. A quick comparison of features and advantages can point to the best solution.
Servo Coupling Design
There are two basic types of servo couplings: bellows and elastomer. Both provide zero-backlash, low inertia, and compensation for shaft misalignment. Their difference lies in the flexible, compensating element.
Bellows Servo Couplings
The bellows coupling uses stainless steel bellows connected to the clamping hubs via a press fit brass wire, providing zero-backlash and extremely high torsional stiffness.
- High torsionally stiffness
- Temperatures to 300°C
- Torque capacity up to 4000 Nm
- Suitable for all motion control applications
Elastomer Servo Couplings
The elastomer coupling uses an elastomer “spider.” The spider and the clamping hubs interlock with involute teeth, providing zero-backlash and vibration dampening.
- Vibration/resonance dampening
- Temperatures to 120°C
- Torque capacity up to 2000 Nm
- Lower cost for less precise applications
- Plug-in assembly
- Electrically insulating
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If you are in need of bellows or elastomer couplings, please visit our couplings page, or contact us to get a custom quote.