RKB0050 by Bosch Rexroth Indramat

Bosch Rexroth Indramat supplies the RKB0050, a member of the RKB Control Cables series. This USB connection cable links a host computer or diagnostic interface to compatible Rexroth drive controllers, providing a direct data path without field crimping or soldering. It is intended for parameter access, status reading, and other service communication in industrial automation cabinets where a preassembled cable is preferred. The cable serves as a communication accessory rather than a power lead, so its role is focused on data exchange between the controller and an external device. Molded strain reliefs and controller-specific coding help keep the connection secure and make the assembly easier to distinguish from other leads used around the control hardware.

The host side terminates in a USB-A plug, while the controller side uses a USB-B plug. This arrangement supports standard USB 2.0 communication and fits common port layouts on computers and control devices. The connector pairing also separates the host end from the device end, which helps avoid mismatched connections. Mechanical durability is rated for 5,000,000 bending cycles, which supports repeated motion in applications where the cable is moved often. During dynamic routing in drag chains, the minimum bend radius is 7.5 x D. For fixed installation, the minimum bend radius is 5 x D. These bend limits help reduce conductor stress and help preserve stable signal transmission over time.

The cable operates from -30 °C to 80 °C, so it can be used in both cold and warm control environments. Storage is permitted up to 40 °C when the cable is not in use, and the lower storage limit matches the operating minimum. The assembly is supplied as a Ready-Made unit with molded connectors, so no on-site termination is required. This reduces the chance of loose end connections and keeps installation straightforward in enclosed cabinets or machine-mounted electronics. Its basic design uses a standard PVC sheath intended for typical indoor routing where specialized chemical or radiation resistance is not required. The PVC jacket is suited to general cabinet interiors and other protected indoor cable paths.