RKB0061 by Bosch Rexroth Indramat

The RKB0061 is an industrial control cable manufactured by Bosch Rexroth Indramat as part of the RKB Control Cables series. This ready-to-install assembly carries Ethernet signals between servo drives, decentralized I/O modules, and supervisory controllers, supporting deterministic communication in automated production lines. Its molded terminations and fine-strand conductors are intended for dynamic cable tracks, allowing the harness to be installed quickly while maintaining consistent data integrity inside cabinets and moving machine elements.

The cable is rated for 5,000,000 bending cycles, which indicates the number of continuous flex motions it can withstand in a drag chain before conductor fatigue occurs. A dynamic bending radius of 7.5 x D is the minimum loop curvature allowed while the machine is in motion, and when the cable is clamped, the static radius can be reduced to 5 x D to conserve space in fixed ducts. The cable is rated as Cat5, so it supports 100 Mb/s Ethernet traffic and common industrial protocols. Its operating range of -30 to 80 °C helps maintain impedance and jacket elasticity during cold startups or in heated enclosures. It is identified as a basic Ethernet cable variant, which distinguishes it from power or hybrid members of the same series.

Connection hardware is standardized with Mini I/O I on one end and Mini I/O II on the opposite side, allowing fast plug-in connection to PLC interface cards without field crimping. Because the assembly is Ready-Made, installation is limited to routing and fastening, which helps prevent termination errors that can degrade signal quality. A storage range of -30 to 40 °C helps prevent jacket embrittlement when spare cables are kept in service parts storage. The predefined pinout supports consistent signal assignment, and the flexible construction helps the cable route through densely packed motion axes.