RKB0044 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKB0044 is a ready-made Ethernet control cable from the RKB Control Cables series. This basic model complies with the Sercos III bus standard and is CAT5e rated. It features an M12 D-coded 4-pin connector on one end and an RJ45 connector on the other, with a dynamic bending radius of 7.5 times the cable diameter and a rated life of 3,000,000 bending cycles.
Internal Product Review
The RKB0044 is a robust ready-made Ethernet control cable from the RKB series by Bosch Rexroth Indramat, equipped with a CAT5e rating and Sercos III bus standard. This cable features an M12 D-Coded 4-pin connector on one end and RJ45 on the other, supporting up to 3 million bending cycles for demanding motion applications. Overall, this model is ideal for high-flex installations requiring durable and reliable connectivity.
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Product Description:
The RKB0044 control cable is produced by Bosch Rexroth Indramat as part of the RKB Control Cables series. This ready-to-install assembly carries real-time fieldbus traffic between drives, HMI stations, and network switches inside automated machinery. Molded connectors and shielded twisted pairs provide consistent signal integrity for position loops, diagnostic data, and safety telegrams across moving machine elements. The cable supports power-chain routing so linear axes, gantries, and robotic wrists can remain synchronized with the machine controller during repetitive motion.
Data transport follows the Sercos III industrial Ethernet protocol, allowing cycle times below 1 ms when the cable is paired with compatible Rexroth drives. Compliance with the CAT5e channel model provides 100 MHz bandwidth for real-time telegrams and standard TCP/IP services. The assembly is supplied as a ready-made cable in the RKB Basic model, so it requires no on-site termination before installation. Its signaling characteristics are consistent with its Ethernet classification within the series. On the machine side, an angled M12 D-coded 4-pin plug provides a vibration-resistant connection to compatible servo modules.
The cable is designed to withstand 3,000,000 bending cycles during cable-carrier operation without conductor fatigue when it is routed within the required limits. During motion, the routing must maintain a minimum bend radius of 7.5 × D to preserve shielding integrity and stable impedance. A fixed installation permits a smaller bend radius of 5 × D because the cable is not exposed to repetitive movement. Network panels and higher-level switches connect through a molded RJ45 plug, which carries the differential signals to standard copper network infrastructure. These routing options allow the cable to move continuously with pick-and-place axes or remain stationary inside electrical enclosures while maintaining reliable real-time communication.
