RLB3-044ECB Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RLB3-044ECB is part of the RLB Motor Power Cables series and features a basic cable design with a 2.5 mm² power wire cross-section. It has a bending life of 5,000,000 cycles and operates within a temperature range of -30 to 80 °C. This power cable supports direct motor-drive connection and is compatible with EFC controllers and MS2(X) motors.
Internal Product Review
The RLB3-044ECB is a basic design power cable from the RLB Motor Power Cables series by Bosch Rexroth Indramat, engineered for direct motor-drive connection and compatibility with MS2(X) motors and EFC controllers. With a dynamic bending radius of 7.5xD and a rated bending life of 5,000,000 cycles, this cable is ideal for applications demanding flexibility and long service life. Its reliable performance under temperatures from -30°C to 80°C makes it a robust solution for industrial environments.
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Product Description:
The RLB3-044ECB belongs to the RLB Motor Power Cables series produced by Bosch Rexroth Indramat. Classified within the Rexroth Cables product group, this basic power cable is designed solely for three-phase power transmission and protective earth continuity. It supports a direct connection between the motor and drive, eliminating intermediate terminal strips and reducing potential points of failure. In automated production lines, the assembly connects an inverter to an MS2 electric servo so that commanded torque reaches the axis with minimal voltage drop, supporting precise position, velocity, and force regulation.
The cable has a dynamic bending radius of 7.5 × D and a static bending radius of 5 × D, allowing the PUR jacket to move inside drag chains without compressive cracking. Each copper core has a cross-sectional area of 2.5 mm², balancing current-carrying capacity against overall cable weight so cantilevered robot arms are not excessively loaded. The cable has a service life of 5,000,000 cycles under the applicable operating conditions. Functional flexibility down to -30 °C keeps the insulation pliable during freezer startups or cold-weather operation. Its straightforward internal arrangement also limits torsion at the crimped contacts during repeated movement.
The cable supports temperatures up to 80 °C, accommodating enclosure hot spots generated by braking choppers and densely arranged power modules. A molded plug coded V terminates the motor end, and its bayonet latch maintains stable electrical contact during machine operation. At the inverter end, the cable connects to screw-clamp terminals on EFC controllers. Its electrical characteristics are compatible with the MS2(X) motor series, supporting the required phase symmetry and shielding. Because feedback, brake, and signal pairs are not bundled with the power conductors, the cable simplifies the separation of power and control wiring. This arrangement reduces electromagnetic coupling between circuits and allows the cable to be routed more easily through trays in multi-axis machines.
