Product Description:

The RKL4418 is a motor power cable supplied by Bosch Rexroth Indramat within its RKL Motor Power Cables series. This cable links drive controllers to servo or spindle motors, providing three-phase power and ancillary signals required for coordinated motion in automated machinery. By combining power and signal conductors in a single routed bundle, the assembly simplifies wiring in cabinet-to-axis runs on packaging lines, gantries, and machine tools.

The cable’s outer diameter measures 29.8 mm, providing a clear reference for gland and conduit selection. Four primary conductors with a combined cross-sectional layout of 4 × 25.0 mm² handle the motor’s load current, while a DC loop resistance of 0.78 Ω/km limits voltage drop along extended paths. The copper strands are insulated to withstand continuous conductor temperatures up to 90 °C, so the cable remains serviceable near warm motor housings. During static routing inside control cabinets, a minimum bend radius of 5 × D keeps mechanical stress below the level that could crack insulation or loosen shields. The bright RAL 2003 orange jacket maintains visibility in crowded energy chains and conforms to common European color coding for movable power lines.

Two twisted signal pairs with a combined cross-sectional layout of 2 × (2 × 1.5 mm²) supply brake or sensor circuits without requiring a separate harness. When the installation must flex repeatedly, such as on a reciprocating axis, a dynamic bend radius of 7.5 × D helps prevent conductor fatigue. The jacket is made of PUR, which provides abrasion resistance, coolant tolerance, and low halogen content for industrial plant environments. A total shield encloses all conductors, improving electromagnetic compatibility with nearby feedback and I/O wiring. The cable is approved for use in drag chains and can sustain millions of flexing cycles without corkscrewing or rupturing the sheath.