igus PRM rotational energy supply system

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In addition to slip rings, rotary energy supply systems are often used to rotate cables and hoses safely through 360°.

Specifically for tight rotational movements in cables and hoses, igus has developed the PRM (Polymer Rotation Module) energy supply system consisting of a polymer energy chain and a low-friction plastic guide trough. Previous models used a steel channel, which was a major cost factor, especially in smaller applications.

The PRM utilises wear-resistant, durable, high-performance plastics. The result is a system that costs up to 73% less and is up to 85% lighter than a steel trough, the company claims. An additional advantage of a plastic trough is protection against corrosion.

Rotary energy supply systems score particularly well against slip rings because the cables have a defined movement, and several forms of media can be guided at the same time. The chain can be adjusted at any time and cables can be quickly replaced during maintenance. The system is available in outer diameters ranging from 200 to 500 mm as a complete set. Users can also deploy ready-made kits for linear travels of 8 to 200 m.