RKL4729 by Bosch Rexroth Indramat

The RKL4729 power lead is produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It serves as the motor-to-drive supply line for Rexroth servo systems, carrying three-phase power and auxiliary conductors between the inverter and the actuator. This arrangement keeps the power connection and associated conductors in one cable assembly, which helps keep routing compact on moving axes. Its shielded construction helps limit electromagnetic interference, which supports stable speed and position control in automated cells where axes move continuously. The cable is intended for industrial motion systems that need consistent electrical performance during repeated travel.

The cable allows a dynamic bend radius of 7.5 × D, while fixed routing can be installed at 5 × D; these limits help reduce conductor fatigue on linear and multi-axis machinery. Its conductor set is [4x35.0 mm² + 2x(2x1.5 mm²)StC]C, which separates the power conductors, protective earth, and twisted signal pairs under a common shield. The bulk cable code is INK0667, and the line resistance is 0.554 ?/km, which helps limit voltage drop over long drag-chain runs. The sheath is suitable for drag-chain use and supports repeated motion without cracking or twisting, which is important on carriages and gantries that cycle throughout the day. Using one shielded assembly also helps keep cable routing orderly where several moving axes are installed side by side.

The drive end uses a RLS0723/K35 connector, and the motor end uses an RLK1301 plug, so both ends connect directly to compatible Rexroth equipment. An outer jacket made of PUR resists oil spray, weld spatter, and abrasion, and it also helps the cable move cleanly through cable carriers. The halogen-free insulation helps reduce harmful emissions in the event of fire and supports use in enclosed machine spaces. The RAL 2003 (orange) jacket color makes the cable easier to identify in crowded trays and cable carriers.