RLB2-042FDB by Bosch Rexroth Indramat

The Bosch Rexroth Indramat RLB2-042FDB is a motor power cable from the RLB Motor Power Cables series. It provides the connection between drive hardware and a servo motor without intermediate junctions, which keeps the power path direct and reduces extra connection points. The cable carries three-phase power together with auxiliary signals for automated axes, so one assembly can support motor operation and related control functions. Its preassembled format supports compact routing and direct connection at both ends, which is useful in machines where cabinet space and cable movement must be managed carefully.

Electrical loading is handled by a copper conductor cross-section of 4 mm², while four auxiliary conductors of 4 x 2.5 mm² support brake or sensor circuits. Mechanical durability is rated for 5,000,000 bending cycles in cable chain service, and dynamic routing requires a minimum bend radius of 7.5 × D. The molded motor connector uses the quick-lock M40 (SPEEDCON) style, which allows a direct motor connection without a terminal box and helps keep the interface compact. The permitted ambient temperature extends from -30 °C to 80 °C, covering typical indoor machine environments where cables may see continuous motion and heat from nearby equipment.

In fixed installations, the bend radius can be reduced to 5 × D, allowing the cable to sit in trays or dress packs where movement is limited. The assembly is qualified for ctrlX DRIVE controllers and the MS2(X) motor series, supporting direct compatibility within those platforms. The construction follows the Basic layout, and storage limits match the operating range to help preserve insulation condition during extended downtime. The cable is supplied as a single preassembled power line that mates directly with cabinet and motor hardware, which simplifies placement in systems that use matched drive and motor components.