RKL0065 by Bosch Rexroth Indramat

Bosch Rexroth Indramat produces the RKL0065 within its RKL Motor Power Cables series. This model is engineered as a cable for fixed installation or drag-chain motion between an inverter output and a synchronous servo motor. In automated lines, it delivers three-phase power and auxiliary control lines through a single jacket, simplifying routing in compact machine frames. It is suitable for continuous linear motion stages, robotic axes, and other dynamic assemblies that require reliable motor energizing during cyclic acceleration.

The conductors follow a 4x1.0 + 2x(2x0.75) mm² layout, so four 1.0 mm² cores carry motor phase current while two twisted shielded pairs handle brake or sensor lines. The overall diameter is 12.0 mm, giving the cable a compact cross-section that fits standard cable tracks without crowding adjacent runs. A PUR outer jacket protects against oil, abrasion, and coolant exposure common in machining centers and automated handling equipment. Long-distance voltage drop is limited by a DC resistance of 19.5 ?/km on each 1.0 mm² conductor, which helps maintain stable power delivery over extended cable runs. The sheath is halogen-free, which reduces corrosive gas release during an electrical fault and supports use in ventilation-sensitive areas such as food processing or pharmaceutical packaging equipment.

In moving applications, the cable tolerates continuous velocities up to 5 m/s and peak accelerations of 10 m/s², so it can be used in fast pick-and-place gantries without exceeding conductor fatigue limits during repetitive travel. For recurring motion, the minimum bend radius is 7.5 × D, whereas stationary routing may use 5 × D to protect dielectric integrity at entry points and along fixed cabinet transitions. The flexible installation temperature range is -20 to +40 °C, so startup is permitted in cool environments as long as the motion system remains within that window. The cable can be routed through energy chains on gantries, transfer units, and servo axes that cycle throughout normal production shifts.