RLB2-042FDB Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RLB2-042FDB is part of the RLB Motor Power Cables series and is designed as a basic power cable with a cross-section of 4 mm². It has four auxiliary conductors of 2.5 mm² each and supports direct motor-drive connections with an M40 SPEEDCON connector. The cable is capable of withstanding 5,000,000 bending cycles and is suitable for operating temperatures between -30°C and 80°C.
Internal Product Review
The RLB2-042FDB is a Bosch Rexroth Indramat power cable designed for reliable motor-drive connections using a robust M40 (SPEEDCON) connector. With a cross-section of 4 mm² and support for up to 5,000,000 bending cycles, this cable is engineered for long-lasting performance in dynamic industrial environments. The RLB2-042FDB stands out for its high durability and straightforward integration with ctrlX DRIVE and MS2(X) motor series.
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Product Description:
The RLB2-042FDB cable is manufactured by Bosch Rexroth Indramat and belongs to the RLB Motor Power Cables series. Within the product lineup the cable variant is identified specifically as a power cable, separating it from encoder or hybrid lines. It is a factory-terminated power line that connects MS2 synchronous motors to their matched ctrlX DRIVE in automated cells. The cable transmits phase current, routes auxiliary supplies, and locks to the motor with an M40 SPEEDCON bayonet for a sealed, vibration-resistant interface. As part of the Rexroth Cables group, it follows the company’s standard pin allocation and colour coding.
Electrically, the main conductors have a cross-section of 4 mm², while four auxiliary cores of 4 x 2.5 mm² feed brake and sensor circuits. The basic design keeps diameter low, and a PUR jacket tolerates energy-chain movement. During motion the cable bends down to 7.5xD, and for fixed routing it permits 5xD. A life rating of 5,000,000 double strokes suits high-cycle robots. The factory-crimped M40 SPEEDCON plug mates to the motor; the other end is left open for direct drive termination.
Environmental limits allow service from -30 °C to 80 °C in operation and storage, covering cold conveyors and warm machining cells. The cable is approved for ctrlX DRIVE inverters and the matching MS2(X) motor family, so no additional qualification is needed. A direct motor-drive link minimises voltage drop, and the specified static and dynamic radii support vertical or horizontal drag-chain installation without extra brackets. As a power cable variant inside the Power Cables type, the RLB2-042FDB aligns with internal EMC and shield-termination rules on Rexroth platforms.
