RLB2-022DBB by Bosch Rexroth Indramat

Bosch Rexroth Indramat supplies the RLB2-022DBB motor power cable within the RLB Motor Power Cables series. The assembly is intended for applications that need a dedicated link between Rexroth servo drives and synchronous motors. By bundling conductor sizing, insulation, and mechanical flex ratings into one order code, it simplifies cable selection and supports reliable power delivery in gantry, conveyor, or robotic axes used in demanding production environments.

At the electrical level, the RLB2-022DBB is categorized as Power Cables, meaning its cores are sized to carry motor phase current rather than encoder or brake signals. Each conductor has a cross-sectional area of 1.5 mm², which helps limit voltage drop on medium-power axes while keeping the outer diameter compact enough for narrow cable trays. For moving applications, the dynamic bend rating is 7.5 × D, so the cable can loop through drag chains without excessive strain on the conductors. Connection on the motor side is made through an M23 rotational-locking connector, which supports secure mating and sealed connection points. On the controller side, the cable is compatible with the ctrlX DRIVE family, so it can be connected without additional adapters.

Mechanical service life is addressed by an endurance rating of 5 million bending cycles, allowing continuous operation in high-duty pick-and-place or shuttle systems. In fixed installations, the minimum stationary bend radius is 5 × D, which reduces stress at support points and helps protect insulation over time. Compatibility extends to the Rexroth MS2(X) motor series, ensuring that phase pin assignment and shield termination match the intended motor interface. Installation is simplified because the cable uses a Direct run between the motor and drive, so no intermediate terminal blocks are required.