RKL4475 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4475 is part of the RKL Motor Power Cables series and features a cable construction of 4x16.0 mm² plus 2x(2x1.5 mm²). It has an outer diameter of 25.5 mm and a PUR jacket in RAL 2003 orange. The cable supports a maximum acceleration of 10 m/s² and has operating voltages of 300/500 V for power and 300/300 V for control.
Internal Product Review
The RKL4475 is a robust motor power cable from the Bosch Rexroth Indramat RKL series, featuring a 4x16.0 mm² + 2x(2x1.5 mm²) construction and a durable PUR jacket. With a capacitance of 1.2 nF/m and a conductor resistance of 1.21 Ω/km, this cable offers reliable electrical performance for demanding drive applications. Its design supports high acceleration up to 10 m/s², making it a solid choice for dynamic motion systems.
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Product Description:
The RKL4475 cable is a pre-assembled motor power lead supplied by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It routes three-phase drive output and auxiliary control conductors between IndraDrive inverters and synchronous motors in automated cells. Designed specifically for dynamic cable-chain environments, the assembly transmits power, delivers brake voltage, and establishes protective earthing so that servo axes can accelerate and decelerate according to programmed motion profiles.
The core arrangement of 4x16.0 mm² + 2x(2x1.5 mm²) combines four power cores for phase and protective earth with twin screened signal pairs for temperature or brake circuits. A loop resistance of 1.21 Ω/km characterises copper loss and determines voltage drop over long runs. The mutual capacitance is limited to 1.2 nF/m, reducing reactive current when the cable is driven by high-frequency PWM inverters. When fixed inside a cabinet the sheath may be bent to a radius of 5 x D, permitting compact routing without exceeding mechanical strain. In moving drag chains the conductor bundle withstands acceleration peaks up to 10 m/s² while carrying up to 300/500 V power and 300/300 V control potentials.
Colour coding in RAL 2003 (orange) identifies the assembly as motor power according to European machine guidelines, and the wear-resistant PUR (adhesion-free, matt) jacket keeps lubricants or coolants from sticking, which aids maintenance. During continuous flexing the chain bend requirement increases to 7.5 x D, harmonising with the earlier fixed-installation figure to complete the cable routing envelope for industrial layouts. An outer diameter of 25.5 mm sets space demands in energy-guiding tracks and gland plates, aligning the mechanical profile with the electrical and dynamic characteristics discussed above.
