Product Description:

The RL2-146JBB motor power cable is produced by Bosch Rexroth Indramat as part of the RL2 Motor Power Cables series. Designed for second-generation servo motors, it carries three-phase power and control cores from the drive to the motor through a C (M50) terminal-box connection. Its basic PUR jacket supports continuous carrier motion in automated lines. It is intended for installations where the motor connection must tolerate repeated travel while keeping motor power and auxiliary circuits properly separated. This allows a direct cable run between the drive cabinet and the motor terminal box.

The cable is rated for 5,000,000 bending cycles, indicating suitability for high-duty drag-chain service where repetitive flexing occurs. Its internal layout follows a 4x L + 4x 0.75 mm² configuration, combining four power conductors with four auxiliary cores for brake or temperature circuits. That arrangement supports motor current delivery while leaving separate conductors available for control-related functions. A power-core cross-section of 16.0 mm² helps limit resistive losses during operation. The PUR sheath keeps the overall diameter to 25.5 mm, which helps the cable fit compact energy chains and routing spaces. Insulation is rated for 600/1000 V on the power conductors and 450/750 V on the control cores.

The minimum dynamic bend radius is 7.5×D, so the cable can flex repeatedly in moving joints without excessive stress. For rotary axes, a torsion capacity of ±30°/m helps reduce conductor twist during continuous motion. This is useful on axes that combine bending and twisting within a limited routing envelope. In fixed routing, the conductors can operate at up to 90 °C, while flexible operation is limited to 80 °C. The cable also has a leakage capacitance of 0.6 nF/m, which helps maintain stable electrical characteristics along the run.