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Flexible servo cables

A servo cable is a cable for the energy supply of so-called servo motors, which variously position machine parts during operation. The movements are associated with high mechanical stresses and often take place in an environment contaminated by moisture, oil, coolant, dust or chips. The servo cables from igus GmbH permanently retain their performance characteristics under these conditions.

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No. 1 in terms of choice, testing and guarantee

Dependable cables for movements in the e-chain - for many cycles, high speeds and accelerations and more challenges.

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36 months guarantee

In our 2,750 m² laboratory, we put our cables through their paces - and with confidence we can give them a 36 month guarantee!

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Can be calculated and configured

With our tools you will find the right cable for every application - and can directly calculate the service life!

Selection criteria for servo cables

chainflex works

In order to find the required servo cable, first the conditions of use have to be put together. These include the operating temperature, the mechanical stress, the travel and the requirements for oil resistance, as well as a possible torsional stress. Further selection criteria are the required number of cores and the required conductor cross sections.
The mechanical stress is described by the speed of the machine part to be connected, the acceleration when changing direction, the bend radius of the cable and the arrangement of the e-chain in which the cables are laid.

For servo cables, igus GmbH offers both classic servo cables with one or two control pairs, as well as so-called hybrid servo cables, which already contain the control cores for the servo encoder. With the latter version, the number of total cables to be laid can be reduced. However, this requires a servo system designed for OCT (One Cable Technology) or similar systems. The design of the required conductor cross sections is carried out under two aspects. The maximum current that depends on the power input of the driven machine part and the voltage drop due to the electrical resistance of the conductor, which increases with increasing cable length (travel) must be taken into account.
The detailed filter in the online shop and the opportunity to ask questions to the employees of igus GmbH will assist you in the search for the suitable servo cable. We look forward to your applications and are happy to help!

Structure of the servo cable

The cores of the cables are made of strands of very bend-resistant bare copper wires. The core insulation consists of a mechanically high-quality and particularly low-capacity TPE mixture. The overall shield forms a braid of tinned copper wires, constructed with an optimised braid angle designed for movement. This ensures long-term bending movements for long-term electromagnetic compatibility protection. Depending on the material, the outer jacket is resistant to UV light, chemicals, friction and very high or very low temperatures. Depending on the conditions of use, either the iguPUR developed by igus or the common materials PUR (polyurethane), PVC (polyvinyl chloride) or TPE (thermoplastic elastomer) are used as material for the outer jacket. Finding the right material is facilitated by the filter function "Requirements", which allows you to select the conditions of your intended use.
The cores are arranged around a high tensile strength centre element and are held in the intended position with a gusset-filled inner jacket. This structure guarantees the long service life of chainflex servo cables, which can be up to several million double strokes. For the determination of the expected service life under the specific operating conditions, the user has access to the online service life calculator.
The servo cables are sold by the metre by igus GmbH. If required, harnessed cables with connectors are also supplied according to customer specifications.


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