Product Description:

The RKL4449 motor power cable is produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It serves as the fixed or moving link between an Indramat drive and its synchronous motor, carrying three-phase power and auxiliary signals through a single assembly. Designed for installation in machining centers, packaging lines, and material-handling equipment, the cable provides consistent transmission of motor current while withstanding repetitive flexing inside cable carriers and maintaining electromagnetic compatibility across the motion axis.

With an outer diameter of 25.5 mm, the cable fits standard gland plates without requiring excessive space, and its copper core set of 4 × 16.0 mm² power conductors supports the current required by medium-frame servo motors. For static routing, it may be bent to a radius of 5 × D, while dynamic installations in drag chains require a larger minimum radius of 7.5 × D. These bend radii limit mechanical stress on the PUR jacket. Capacitance is held to 1.2 nF/m, reducing reactive current at higher switching frequencies, and an overall shield surrounds all cores to constrain emitted electrical noise. The matte, adhesion-free PUR sheath resists coolants and allows the cable to travel smoothly inside compatible drag chains.

The signal layer includes 4 × 1.5 mm² shielded control conductors that carry brake-release or encoder-supply signals without introducing crosstalk into the power cores. Direct-current losses are limited by a conductor resistance of 1.21 Ω/km, allowing the drive to account for voltage drop along the cable run. In fixed routing, the copper conductors can operate at temperatures up to +90 °C, whereas flexible operation is limited to +80 °C. Ambient operating temperatures range from -20 °C to +40 °C. The orange RAL 2003 jacket improves circuit identification and supports standard safety labeling.