RKL4315 by Bosch Rexroth Indramat

The RKL4315 power lead is produced by Bosch Rexroth Indramat as part of the RKL Motor Power Cables series. It is a factory-terminated motor supply line intended to carry three-phase drive output and protective earth between an Indramat controller and a synchronous servo motor inside an automated cell. By matching the mechanical flex requirements of moving axes with the electrical demands of low-voltage power transmission, the cable supports predictable energy delivery and limits downtime in dynamic handling and machining installations.

Five performance parameters describe the mechanical endurance of this assembly. A flex life of 5000000 bending cycles qualifies the cable for continuous-motion energy chains often found on gantry or robot axes. During motion it must never be bent tighter than a dynamic radius of 7.5xD; once installed, the resting radius can be reduced to 5xD without compromising insulation integrity. The copper phase conductors have a cross-section of 4.0 mm², enabling moderate current levels while keeping the outer diameter small enough for chain cavities. Finally, its factory classification as a Ready-Made article means both terminations are already crimped and molded, eliminating on-site stripping and termination work.

The upstream interface is an RLS0723/K04 angled plug that mates directly with IndraDrive controller output terminals, while the motor end carries an RLS1201/C04 bayonet connector suited to MSK and similar servomotors. This pairing identifies the cable variant as a Power Cable, distinguishing it from feedback or brake looms within the same family. For ordering and logistics, the assembly references bulk stock code INK0603, which keeps the sheath compound and conductor layup consistent across replacement lengths. A green-yellow PE core, in color GNYE, is included for equipment grounding and aligns the wiring set with IEC and NFPA installation practices.