RKL4742 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4742 is part of the RKL Motor Power Cables series and features a PUR jacket with a power wire cross-section of 25.0 mm². The cable supports an operating voltage of 300/500 V for power, has an outer diameter of 29.8 mm, and a specific cable weight of 1.750 kg per meter. It has a minimum bending radius of 5xD when fixed and 7.5xD when flexible.
Internal Product Review
The RKL4742 is a robust power cable from the RKL Motor Power Cables series by Bosch Rexroth Indramat, featuring a PUR jacket for excellent chemical and abrasion resistance. With a 25.0 mm² power wire cross-section and a conductor resistance of only 0.78 ohm/km, this cable ensures efficient power transmission. Its high durability and flexibility make it a strong choice for demanding motor connections.
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Product Description:
The RKL4742 is a motor power cable manufactured by Bosch Rexroth Indramat for the RKL Motor Power Cables series. It links drive controllers to servomotors or induction motors in factory automation, carrying phase current and smaller control circuits within one assembly. Shielded conductors and a pressure-extruded jacket help maintain stable electrical performance while reducing electromagnetic coupling with adjacent machine components and wiring.
The copper power conductors have a cross-sectional area of 25.0 mm², which limits temperature rise while carrying continuous drive current. The insulation system is rated for 300/500 V, making it suitable for common three-phase inverter outputs. The cable has an overall diameter of 29.8 mm, allowing it to fit standard metric cable glands and fixed routing paths that maintain the required 5 × D minimum bend radius. Its loop resistance is 0.78 ohm/km, which helps limit voltage drop over long cable runs. The mass per unit length is 1.750 kg/m, an important value when determining the mechanical load placed on cable supports or carrier systems.
The PUR jacket resists cutting fluids and abrasion while supporting dynamic movement at a minimum flexible bend radius of 7.5 × D. Control pairs within the composite cable are rated for a service voltage of 300/300 V, supporting brake, temperature-sensor, and other auxiliary circuits alongside the motor phases. The conductor insulation withstands temperatures up to +90 °C during fixed installation, while the maximum conductor temperature is +80 °C during continuous flexing. The lower temperature limit for moving service accounts for the additional heat and mechanical stress produced by repeated bending in cable carriers. These operating characteristics suit routes used in gantries, transfer lines, and other automated machinery where motor power and auxiliary signals must travel through the same cable assembly.
