RKL4548 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4548 is part of the RKL Motor Power Cables series and features a PUR orange jacket with an outer diameter of 30.8 mm. The cable provides 35.0 mm² power conductors for operation at 300/500 V and includes four 1.5 mm² control conductors rated at 300/300 V. It has a maximum fixed wire temperature of 90°C and a minimum bending radius of 154 mm when fixed.
Internal Product Review
The RKL4548 is a robust motor power cable from the RKL series by Bosch Rexroth Indramat, featuring a PUR jacket and a distinctive orange color for enhanced durability and visibility. With a 35.0 mm² power conductor cross-section and a power operating voltage of 300/500 V, this cable is well-suited for demanding industrial environments. Reliable performance is supported by a maximum fixed wire temperature of 90°C and a low conductor resistance of 0.554 Ω/km.
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Product Description:
The RKL4548 cable is produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It is a combination power and control cable intended for routing between an inverter and its matching motor in industrial automation cells. By housing high-current phase conductors and low-level auxiliary circuits under a single polyurethane sheath, the assembly conserves panel space and simplifies cable management compared with separate cable runs. Its mechanical profile is consistent with other members of the series, allowing it to use compatible strain-relief hardware and standard cable-routing components.
The copper power cores have a cross-sectional area of 35.0 mm², which limits voltage drop when motors draw high inrush currents. At 20 °C, the loop resistance is 0.554 Ω/km, helping control I²R heating during continuous operation. The power conductors can be energized at up to 300/500 V, making the cable suitable for common low-voltage motor drives. The cable supports a maximum conductor temperature of 90 °C in fixed installations. Moving cable-chain applications must observe the lower continuous-flex temperature limit stated for the sheath and conductor insulation. During motion, the PUR jacket supports a minimum bending radius of 231 mm, allowing the cable to pass through compact energy-chain guides without placing excessive stress on the conductors.
The cable contains four integrated signal cores for circuits such as brake release, temperature sensing, or encoder power. Each auxiliary conductor has a cross-sectional area of 1.5 mm², allowing ancillary wiring to remain inside the main harness and reducing the number of enclosure penetrations. These auxiliary conductors can be energized at up to 300/300 V without exceeding their insulation limit. The cable has an outer diameter of 30.8 mm, allowing it to fit compatible metric cable glands and carrier partitions. For fixed routing, the minimum bending radius is 154 mm, which helps prevent kinks in the orange RAL 2003 jacket. The polyurethane sheath resists exposure to oil and coolant, while its continuous-flex temperature limit of 80 °C supports operation in moving industrial axes.
