RLC1-122ECB by Bosch Rexroth Indramat

The RLC1-122ECB cable is a motor power cable produced by Bosch Rexroth Indramat and delivered under the RLC1 Motor Power Cables series. Designed for servo axes, the product transmits three-phase drive output and auxiliary signals between IndraDrive controllers and synchronous motors inside automated machinery. Its construction supports constant flexing in cable chains so that moving gantries, pick-and-place arms, and linear stages can receive fault-free power during every cycle.

The power cores of the cable have a cross-sectional area of 2.5 mm², equivalent to 14 AWG, so they can carry motor phase current with moderate voltage drop across long runs. An additional quartet of auxiliary conductors, each rated at 1.0 mm², is integrated for brake release or thermal sensor lines that draw less current. Under a 40 °C ambient, the assembly is approved for a continuous load of 22.6 A, allowing it to feed motors up to the rated drive output without overheating the insulation. Termination is handled through a factory-molded M23 (Double Clamping) interface, giving strain relief and 360-degree shield contact at both the drive and motor ends. Bosch Rexroth categorizes this configuration as a Basic design, meaning no liquid-tight jacket or torsion upgrade is added.

For moving applications, the RLC1-122ECB endures accelerations up to 50 m/s² and operational speeds of 5 m/s inside energy chains. These ratings help machinery complete rapid point-to-point positioning without subjecting the insulation to cyclic stress beyond its mechanical limit. The maximum dynamic travel length is 50 m, so the same cable type can serve long X-axes on gantry mills or warehouse shuttles. Its configuration is identified by the code C (4xL + 4x1.0 mm²), indicating four power conductors paired with four auxiliary cores arranged in a layered layup that keeps bending radius uniform during continuous motion.