RKL4590 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4590 is part of the RKL Motor Power Cables series and features 4x25.0 mm² power conductors and 4x1.5 mm² auxiliary conductors. It uses a PUR matte jacket material and is designed for use in drag chains with a bending cycle capacity of 5,000,000. The cable supports operating voltages of 300/500 V for power and 300/300 V for auxiliary conductors, with a maximum wire temperature of 90°C.
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Product Description:
The RKL4590 motor power cable is produced by Bosch Rexroth Indramat and belongs to the RKL Motor Power Cables series. It is designed to link drive controllers to servo motors in automated equipment, combining main conductors for three-phase power with auxiliary cores that can feed brakes, sensors, or fans. The cable profile supports continuous movement in cable carriers, allowing machine builders to route energy and signals along fast-moving gantries without separate harnesses.
The main current path is provided by 4 × 25.0 mm² copper conductors, while control or brake circuits can share the dedicated 4 × 1.5 mm² auxiliary cores. The motor conductors withstand up to 300/500 V, while the auxiliary group is rated for 300/300 V. DC losses are minimized by a conductor resistance of 0.78 Ω/km, keeping voltage drop low across long machine axes. The cable tolerates accelerations of 10 m/s² inside cable carriers, and its matte, adhesion-free PUR jacket resists cutting fluids while preventing neighboring runs from sticking together. Capacitance of 1.1 nF/m supports accurate drive PWM filtering, and an overall outside diameter of 29.8 mm fits standard 30 mm carrier separators. A green-yellow protective conductor is integrated so frame grounding does not require an external lead.
The cable is rated for 5,000,000 double strokes in drag-chain applications, enabling long service intervals on high-duty pick-and-place robots. Fixed routing can use a bend radius of 5 × D, whereas moving segments must maintain a radius of 7.5 × D to avoid conductor fatigue. The copper conductors tolerate temperatures up to +90 °C when secured in a fixed installation and remain stable at temperatures up to +80 °C during continuous flexing. The PUR sheath resists abrasion and exposure to common industrial fluids. Its adhesion-free surface also helps the cable move freely alongside neighboring cable runs. These properties reduce mechanical stress on the outer jacket during repetitive motion.
