RKL0049 by Bosch Rexroth Indramat

The RKL0049 motor power cable is produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. Designed for servo drive installations, the product carries three-phase power and auxiliary signals between an inverter and the matched motor. Pre-assembled connectors on the controller end and motor side allow direct connection while preserving shielding integrity. By combining the power cores, auxiliary pairs, and a PUR outer jacket in a single flexible bundle, the cable simplifies routing inside drag chains and supports organized wiring in automated machinery.

The cable's power path relies on 4x6.0 mm² copper conductors, a cross-section capable of supplying high continuous current to medium-frame servo motors. Auxiliary functions are supported by a set of 2x1.0 mm² + 2x1.5 mm² leads that can be assigned to temperature sensors or brakes without requiring a separate harness. With an overall diameter of 18.5 mm, the assembly fits common energy-chain compartments while still allowing a compact bend profile. The outer sheath is molded from PUR, a material that resists wear, oil, and coolant exposure in production cells. Line losses are minimized by a conductor resistance of 3.30 ?/km measured at 20 °C, which helps limit voltage drop over longer cable runs.

Mechanical longevity is addressed by a tested life of 5,000,000 flex cycles when the cable is guided in an energy chain. Installation guidelines specify a static bend limit of 5xD for fixed routing and a dynamic limit of 7.5xD during continuous motion. Applying these values helps protect the shielding and maintain cable stability during repeated movement. For thermal operation, conductor insulation tolerates up to 90 °C in stationary layouts, while moving duty is limited to 80 °C to reduce stress during continuous flexing.