RKL4594 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4594 is part of the RKL Motor Power Cables series and features a cable construction of 4x10.0 mm², 2x1.0 mm², and 2x1.5 mm², with an overall cable diameter of 22.2 mm. The cable jacket is made from PUR in RAL 2003 orange and supports operating voltages of 300/300 V for control and 300/500 V for power applications.
Internal Product Review
The RKL4594 is a robust motor power cable from the RKL series by Bosch Rexroth Indramat, featuring a durable PUR jacket in RAL 2003 orange and an assembly configuration of AEH/RKS+INK0605-RLS0721. With a cable construction of 4x10.0 + 2x1.0 + 2x1.5 mm² and a power wire cross-section of 10.0 mm², this cable reliably handles demanding power transmission. Its high maximum wire temperature and flexible construction make it ideal for industrial environments requiring both durability and performance.
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Product Description:
Bosch Rexroth Indramat manufactures the RKL4594 motor power cable within the RKL Motor Power Cables series. The assembly connects Indramat inverters to servo motors while carrying three-phase power, protective earth, and auxiliary control signals used for temperature or brake monitoring. In production cells and process lines, the cable maintains stable voltage and limits electromagnetic interference between control cabinets and moving axes. Its polyurethane sheath and drag-chain-rated design also allow the cable to tolerate continuous motion in automated equipment.
The outside diameter measures 22.2 mm (±1.0 mm), so gland plates must accept that size without compressing the shielding. Conductor resistance is 1.91 Ω/km at 20 °C, helping control voltage drop over extended cable runs. In fixed installations, the maximum conductor temperature is +90 °C, while flexible sections permit a maximum of +80 °C. Fixed routing requires a minimum bend radius of 5 × D, while dynamic loops require 7.5 × D to prevent premature fatigue. The power cores can be energized at up to 300/500 V, while the control conductors are rated for 300/300 V. A matte, adhesion-free PUR jacket in RAL 2003 orange resists oil and abrasion while remaining visible inside crowded cable trays.
The assembly code AEH/RKS+INK0605-RLS0721 indicates that the cable has prefitted connectors and strain-relief boots for installation. Inside the sheath, the conductor arrangement is 4×10.0 + 2×1.0 + 2×1.5 mm², separating the motor power, protective earth, and low-current signal paths. This arrangement allows the larger power conductors to carry the continuous current drawn by medium-frame servo motors without excessive heating. A discharge capacitance of 1.0 nF/m keeps high-frequency leakage predictable for drive-side filters. The separated auxiliary conductors support brake or temperature-monitoring circuits without requiring another cable between the motor and drive. Prefitted terminations also reduce the amount of connector assembly required when routing the cable through a machine.
