RHB2-011BBB by Bosch Rexroth Indramat

The RHB2-011BBB is a hybrid encoder cable manufactured by Bosch Rexroth Indramat for the RHB2 Encoder Cables series. It combines motor power and feedback conductors inside one outer jacket so MS2x servo motors can connect directly to ctrlX DRIVE inverters without separate signal cabling. In automated systems, the cable carries drive current and returns encoder data through the same moving cable body, which helps reduce routing complexity around the axis. Because only one cable has to follow the motor, the connection set stays simpler on axes that move continuously or reverse direction often.

Its conductor layout is 4x L + 2x 0.5 mm² + 4x AWG 24 - DS, placing four load conductors beside two auxiliary conductors and four shielded encoder pairs. Each load core has a cross-section of 0.75 mm², and the power conductors use 18 AWG sizing to balance current capacity with flexibility. The auxiliary conductors are arranged as 2x 0.5 mm², providing a separate path for brake release or temperature-monitoring signals. Encoder communication is carried on 4x AWG 24 twisted pairs, which help preserve differential signal quality during motion. Keeping these functions in one cable supports compact routing without requiring separate power and feedback harnesses.

The cable supports a continuous current of 10.4 A (Aeff) through the power cores and is rated for 5 000 000 bending cycles in dynamic chain service. A minimum dynamic bend radius of 7.5xD helps protect the conductors during repeated travel, while a minimum fixed bend radius of 5xD applies in stationary routing. Its hybrid construction places power and signal cores under one shared jacket, which helps keep moving assemblies organized and reduces the number of separate cable paths near the motor. These limits suit servo axes that cycle frequently and need reliable power and feedback transmission during continuous machine operation.