RKB0036 by Bosch Rexroth Indramat

The RKB0036 is a factory-terminated control cable manufactured by Bosch Rexroth Indramat for the RKB Control Cables series. It serves as a system bus link between drives, PLCs, and peripheral modules, enabling IndraBus data exchange inside automated machinery and handling units. By supplying a ready-to-install communication line, the product reduces wiring effort and supports uniform signal integrity across distributed control topologies.

The assembly is rated for 5 million bending cycles, so it tolerates continuous motion in cable tracks without early conductor fatigue. It is a ready-made harness, so it arrives cut to length with molded plugs and eliminates on-site crimping. The cable is a system bus cable, so its characteristic impedance and shielding suit the IndraBus protocol. For moving installations, the dynamic bending radius must remain at 7.5xD, while stationary loops can follow the tighter 5xD static radius; these limits help prevent core damage. Both cable ends terminate with IndraBus male connectors, providing keyed interfaces that maintain reliable differential signaling up to the controller backplane. Maximum continuous conductor temperature is 80 °C, permitting installation near motors and power modules that dissipate moderate heat.

This model carries the Basic designation, meaning no additional armor or drag-chain reinforcement is present, which keeps outer diameter and flexibility aligned with standard cabinet layouts. It maintains full signal performance down to -30 °C, a threshold that also matches the minimum storage temperature, allowing safe transport in unheated facilities. When coiled on the shelf, ambient should not exceed 40 °C to avoid sheath aging, which helps preserve insulation resistance during storage. Dual IndraBus connectors provide keyed end connections, so pin orientation stays consistent once the cable is routed through energy chains or control enclosures.