RKL0037 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL0037 is part of the RKL Motor Power Cables series and has a bulk cable diameter of 14.8 mm with an operating voltage of 600 V AC. The cable features a PUR jacket in orange (RAL 2003), supports use in energy chains, and has a phase conductor cross-section of 2.5 mm².
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Product Description:
The RKL0037 motor power cable is produced by Bosch Rexroth Indramat for its RKL Motor Power Cables series. This component forms the electrical link between a drive controller and its associated motor in automated machinery, carrying power through the primary three-phase conductors and a smaller auxiliary pair used for sensor reference or brake release. By meeting the insulation, shielding, and flexibility requirements typical of energy-chain installations, the cable helps maintain stable power delivery and minimizes electrical interference during high-cycle machine operation. Its flexible design also allows the cable to follow repetitive machine movements without placing excessive stress on the internal conductors.
Each of the three phase cores and the protective-earth core has a cross-sectional area of 2.5 mm², allowing moderate drive currents while keeping the cable diameter compact. An auxiliary pair with a cross-sectional area of 1.0 mm² supports low-power functions such as brake control without adding significant mass. The insulation system is rated for up to 600 V AC, allowing the conductors to connect directly to standard inverter terminals. Direct-current losses are limited because the copper has a resistance of only 7.98 Ω/km at 20 °C. Capacitive coupling to ground is limited to 0.7 nF/m, helping the drive maintain its voltage setpoint and reduce common-mode noise over extended cable runs.
The outer diameter measures 14.8 mm, so the cable fits standard metric glands and chain separators without compression. During motion, the assembly withstands repeated articulation inside an energy chain with a minimum dynamic bend radius of 7.5 × D. When stationary, the cable can be routed with a tighter minimum bend radius of 5 × D to simplify cabinet wiring. The polyurethane jacket is finished in orange (RAL 2003), providing oil resistance and high visibility along machine frames. The PUR sheath and energy-chain construction protect the conductor bundle against abrasion, coolant exposure, and the continuous acceleration encountered in modern production lines.
