• Bellows Shaft Couplings

Bellows Shaft Couplings

Bellows shaft couplings are an ideal choice for applications that require high dynamic positioning, such as servo drives.

They are characterised by their zero backlash operation, high torsional strength and low restoring forces. Our range of Bellows Couplings cover shaft diameters from 1mm up to 100mm, and torque ratings ranging from 0.5Nm to 5000Nm.

Bellows shaft couplings can be used in applications that require angular misalignment or parallel misalignment. The design delivers 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.

Our range of Bellows Couplings cover shaft diameters from 1mm up to 100mm, and torque ratings ranging from 0.5Nm to 5000Nm. Some sizes are available with full stainless steel construction. Axial pluggable hubs are also available.

Key product advantages:

  • Backlash free operation
  • Torque range: 0.5 to 5000Nm
  • High torsional stiffness
  • Maintenance free
  • Suits shaft sizes from 1mm to 100mm
  • Suitable for a wide range of operating temperatures from -30°C to +120°C
  • Good corrosion resistance
  • Bellows Shaft Couplings
  • Can be used in temperatures from -30C to + 120C
    Can be used in temperatures from -30C to + 120C
  • Maintenance free
    Maintenance free
  • To suit shaft sizes from 1mm to 100mm
    To suit shaft sizes from 1mm to 100mm
  • Excellent torsional stiffness
    Excellent torsional stiffness

Standard Models

KB1 Miniature Bellows Coupling

KB1 Miniature Bellows Coupling

Set Screw Attachment

  • Shaft diameters: 1mm to 34mm
  • Torque rating: 0.05Nm to 30 Nm
  • Available with axial pluggable hubs.
KB2 Miniature Bellows Coupling

KB2 Miniature Bellows Coupling

Clamp Attachment

  • Shaft diameters: 1mm to 25mm
  • Torque rating: 0.1Nm to 10 Nm
  • Available with stainless steel, axial pluggable and split hubs
KB4 Bellows Coupling

KB4 Bellows Coupling

Clamp Attachment

  • Shaft diameters: 10mm to 80mm
  • Torque rating: 18Nm to 1400 Nm
  • Available with stainless steel, axial pluggable and split hubs
KB4C Bellows Coupling

KB4C Bellows Coupling

Clamp Attachment (Compact)

  • Shaft diameters: 10mm to 70mm
  • Torque rating: 18Nm to 500 Nm
KB5 Bellows Coupling

KB5 Bellows Coupling

Inner Conical hubs

  • Shaft diameters: 10mm to 90mm
  • Torque rating: 18Nm to 5000 Nm
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