RLB3-044GDB Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RLB3-044GDB is part of the RLB Motor Power Cables series and features a basic cable design with a diameter of 18.2 mm. It has a current carrying capacity of 38.2 Aeff and a conductor cross-section of 6 mm². The cable is built with a PUR jacket and supports up to 5,000,000 bending cycles.
Internal Product Review
The RLB3-044GDB from the RLB Motor Power Cable series by Bosch Rexroth Indramat is a robust power cable featuring a 6 mm² conductor cross-section and a durable PUR jacket for demanding industrial environments. With a current carrying capacity of 38.2 Aeff and support for up to 5,000,000 bending cycles, this cable offers excellent reliability in dynamic applications. The combination of mechanical resilience and stable electrical performance makes it an outstanding choice for motor connections requiring long service life.
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Product Description:
The RLB3-044GDB is a shielded power cable manufactured by Bosch Rexroth Indramat for the RLB Motor Power Cables series. It belongs to the Rexroth Cables product group and uses a basic cable design that combines power and auxiliary conductors in one jacket. As a motor supply lead, the cable connects MS2(X) synchronous motors to EFC frequency converters, carrying three-phase drive power and relay signals required by the controller. Its internal layout consists of four 6 mm² power conductors, four 1.0 mm² pilot conductors, and two 1.5 mm² protective conductors, providing dedicated paths for power, monitoring, and grounding within the compact routing spaces of automated machinery.
The power conductors have a cross-sectional area of 6 mm², allowing a continuous load of up to 38.2 A RMS without exceeding thermal limits when the cable is installed in free air. An overall diameter of 18.2 mm keeps the bundle size moderate while maintaining the required separation between insulated conductors. The outer sheath is made from PUR, a thermoplastic polyurethane that resists mineral oils and weld spatter while supporting drag-chain motion. At the motor end, an M40 power connector mates directly with the MS2(X) housing, eliminating the need for field crimping and helping minimize contact resistance.
The cable has a mechanical service life of 5,000,000 bending cycles when guided in an energy chain during continuous-flex applications. During motion, the minimum dynamic bending radius is 7.5 × D, whereas static routing inside control cabinets requires a minimum bending radius of 5 × D to reduce stress on the conductors. Its leakage capacitance is 0.5 nF/m, which limits reactive current between the drive and motor. This electrical characteristic supports stable pulse-width-modulated voltage over long cable runs and helps the EFC frequency converter maintain electromagnetic compatibility in industrial installations.
