Zero Backlash Bellows Couplings

The couplings from the standard range are especially suitable for application in highly dynamic drives such as, linear axes in machine tools, packaging machines or printing presses, or drives for automation. Couplings from the miniature range are designed for use in combination with rotary encoders, stepper motors or tachometers.
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These bellows couplings are torsionally rigid and backlash-free. They are characterized by their compact design and high power density. They connect machine shafts and compensate for shaft misalignment that can occur during assembly or operation. Bellows couplings are suitable for all drive applications which require a coupling that offers positioning accuracy as well as a reliable, wear and maintenance free torque transmission.

Suitable for mounting horizontally, vertically or in fact any desired position. The coupling parts can be arranged as required on the shaft ends  to  be connected. The metal bellows are very torsional-resistant and combined with different clamping options ensure torque transmission between the connected shafts. The  moment  of  inertia  is  low. Bellows couplings compensate axial, radial and angular shaft misalignment with only low restoring forces. These bellows couplings are wear-free when used within their catalogue rating, offering an extended service life.

Bellows couplings consist of two hub parts that are connected by means of bellows made of high-strength stainless steel. The hubs can be coupled to the shafts by many different methods including set screws, key joint, slotted clamping hubs, half-shell hubs, clamping hubs or expanding hubs. The metal bellows make the couplings torsionally rigid, but flexible. Misalignment between the connected shafts deforms the metal bellows.
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Hubs are made of aluminium or steel but stainless-steel variants are also an available. All the metal bellows are made of stainless steel and are available as single-wall or multiple-wall devices depending on size and application. Metal bellows come in various standard lengths. Metal bellows can be combined with different hub versions to create a complete unit. Once the hubs have been joined to metal bellows, they cannot be dismantled again.