RKL4545 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4545 is part of the RKL Motor Power Cables series and has an overall diameter of 29.8 mm. This cable features four power wires with a cross-section of 25.0 mm² and a PUR jacket suitable for drag chain use. It also includes four control wires of 1.5 mm² and supports a maximum wire temperature of 90 °C when fixed.
Internal Product Review
The RKL4545 is a robust power cable from the RKL Motor Power Cables series, designed by Bosch Rexroth Indramat for reliable drag chain use and long-term flexibility. With a PUR jacket and a conductor resistance of 0.78 Ohm/km, this cable offers excellent durability and stable power transmission. Its four 25.0 mm² power wires and four 1.5 mm² control wires make it well-suited for demanding industrial environments.
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Product Description:
The RKL4545 is a motor power cable produced by Bosch Rexroth Indramat for the RKL Motor Power Cables series. It serves as the main electrical link between an Indramat drive and its motor in automated equipment, carrying both three-phase power and low-level control lines so that motion axes remain energized and properly signaled during continuous machine cycles.
This cable measures 29.8 mm in overall diameter, a size that defines the space needed in cable guides and through-panel fittings. Four power cores with a cross-section of 25.0 mm² handle the operating current, and their copper conductors exhibit a resistance of only 0.78 Ω/km, limiting voltage drop over long runs. When installed immobile, the jacket may be bent to a radius of 5 × D, allowing tight cabinet routing without exceeding mechanical stress limits. The outer sheath is PUR, giving abrasion and oil resistance for factory environments. A maximum conductor temperature of 90 °C applies in fixed routing, and four equally sized power wires are complemented by separate control pairs to permit temperature and brake feedback signals.
The signal group contains four conductors, each with a cross-section of 1.5 mm², so encoder or temperature sensor currents remain within safe limits. For continuously flexing paths, the cable supports motion down to a bend radius of 7.5 × D, and its dynamic rating includes operation inside drag chains. Under flexible conditions the conductor temperature must stay below 80 °C to avoid insulation aging. The control circuit count of 4 enables separate channels for motor thermistor, brake release, or additional monitoring contacts without crosstalk with the power cores.
