RKB0037 by Bosch Rexroth Indramat

The RKB0037 control cable is manufactured by Bosch Rexroth Indramat within the RKB Control Cables series. Designed as a system bus link, it connects servo drives, PLCs, and peripheral modules so that command, status, and diagnostic data move reliably through an automated cell. The cable serves as the communication path between control hardware, allowing coordinated data exchange between drives and central control equipment. As a finished assembly with matched connectors, it reduces setup work in new machine builds and retrofit projects.

This basic model is supplied as a ready-made assembly, so no on-site crimping or pin assignment is required. It uses DSUB 9-pin connectors, and signal allocation spans 9 pins to support the HNA protocol carried by this system bus cable variant. This arrangement supports bus communication without field termination and helps keep contact quality consistent across both ends of the cable. Mechanical endurance is rated for 5,000,000 bending cycles, allowing the jacket and conductors to withstand extended motion in energy chains. During operation, the cable can flex repeatedly to a 7.5xD dynamic bend radius, while fixed routing permits a 5xD static bend radius. Keeping within these bend limits helps maintain stable transmission and reduces stress on the conductors and shield.

Electrical performance is supported by compliance with the HNA bus standard across a broad temperature range. The polymer insulation remains pliable down to -30 °C minimum operating temperature and resists thermal aging up to 80 °C maximum operating temperature in enclosures with limited airflow. These limits are relevant in machines that start in cold conditions or operate near warm power components inside the cabinet. For warehousing, shipping, or long-term storage, ambient conditions should not exceed 40 °C maximum storage temperature. Staying within the stated operating and storage ranges helps preserve insulation flexibility and connector retention during handling and service.