RKL4646 by Bosch Rexroth Indramat

The RKL4646 cable is produced by Bosch Rexroth Indramat and belongs to the RKL Motor Power Cables series. It is a shielded motor power line intended to carry drive output from an RKL-compatible controller to an Indramat servo motor in automated machinery. By matching the impedance and voltage requirements of Rexroth drives, the cable maintains signal integrity during continuous machine operation and delivers three-phase power, while its pair of integrated protective conductors closes the ground path between the controller and motor housing.

The bulk conductor set follows the INK0607 build standard and is bundled in a circular jacket that measures 29.8 ± 1.0 mm across, a diameter that balances current capacity with routing space inside energy chains. Direct current loss is limited by a conductor resistance of 0.78 ?/km at 20 °C, which helps keep thermal rise low over long runs. A mutual capacitance of 1.1 nF/m shapes the drive output filter response so that common-mode noise stays within EMC limits. The controller side terminates in a factory-fitted RLS0724/K25 connector, ensuring keyed engagement with Rexroth inverter terminals, while the motor end accepts the RLK0007 plug for sealed attachment to the machine stator terminal box. Mechanical endurance is rated for 5,000,000 bending cycles, allowing the cable to operate continuously in high-speed drag-chain applications without conductor fatigue.

The outer PUR sheath is colored orange, RAL 2003, for quick identification on the plant floor and resists cutting oils often found near machining centers. During static installation, the cable tolerates temperatures up to +90 °C without jacket deformation, and it can be bent to a fixed radius of 5xD. Dynamic motion inside a chain requires a more generous 7.5xD loop to prevent strain on the copper bundles, and the cable is suitable for drag-chain use in robots, pick-and-place axes, and gantry drives that run continuously.