RLC1-126BGB by Bosch Rexroth Indramat

The RLC1-126BGB is a dedicated motor power cable produced by Bosch Rexroth Indramat within the RLC1 Motor Power Cables series. It carries drive output to the motor without signal conductors, so it is used only for voltage and current transmission in automated machinery. The cable is suitable for moving applications in energy chains and cable tracks, where repeated motion must be handled without interrupting power delivery. Its layout supports direct connection between the inverter and motor, which helps keep wiring simple on compact servo axes.

The cable is rated for up to 5,000,000 cycles of repeated travel before flex fatigue becomes a concern. During movement, it requires a minimum dynamic bend radius of 7.5xD, while fixed routing can use a static bend radius of 5xD. Four copper conductors with a cross-section of 0.75 mm², equivalent to 18 AWG, provide a balance between current capacity and cable flexibility. An M23 double-clamping connector at the motor end improves strain relief and supports a secure connection, while the opposite end remains open for drive-side termination. The basic cable design uses PVC-insulated cores and is intended for standard motor power transmission rather than feedback or control functions.

For current transfer, the four-core layout supports a continuous load of 10.4 A in typical small servo applications. The cable contains 4 internal wires, arranged for three phases and protective earth, so a separate grounding lead is not required. This construction helps the cable fit narrow drag-chain channels while maintaining the direct motor-to-drive connection. Storage and cold-start conditions are permitted down to -30 °C, and operation is permitted up to 40 °C in service. That temperature range suits enclosed machinery and general industrial cabinet environments where stable power routing is required during regular axis movement.