RKL0061 by Bosch Rexroth Indramat

The RKL0061 cable is a motor power lead produced by Bosch Rexroth Indramat for the RKL Motor Power Cables series. It serves as the primary power link between Indramat servo drives and synchronous motors in automated machinery, carrying three-phase supply, protective earth, and auxiliary signals within a single jacket. By integrating power and control conductors, the product simplifies routing inside energy chains and control cabinets, reducing the need for separate cable runs in production lines, packaging machines, and gantry axes.

The cable has an outer diameter of 18.5 mm, giving enough cross-section to house the power bundle of 3 + PE (6.0 mm²). These power cores carry the drive output current, while two auxiliary conductors rated at 2 x 1.5 mm² can supply brake release or fan circuits. For sensor loops, the cable includes two control conductors of 2 x 1.0 mm², which keeps related wiring in the same sheath and helps reduce external cable clutter. Copper losses are limited by a conductor resistance of 3.30 ohms/km, and signal behavior is supported by a discharge capacity of 0.8 nF/m, which is useful on longer runs between high-frequency inverters and motors. The cable uses the core construction [4x6.0mm²+(2x1.0)StC+(2x1.5)StC], which places screened pairs next to the power phases to help control crosstalk.

Mechanical handling limits include a minimum fixed bending radius of 5 x D, so the cable can be clamped in machine frames without placing excessive stress on the copper conductors. For movable axes, the flexible routing value is 7.5 x D, allowing the sheath to withstand continuous travel in cable chains. The adhesion-free matte PUR jacket resists oils, coolants, and weld spatter, while the internal insulation tolerates elevated operating temperatures in both fixed and dynamic service. This combination supports installations where one cable must carry motor power and auxiliary circuits through repeated motion without adding separate harnesses.