RKL0051 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL0051 is part of the RKL Motor Power Cables series and features a PUR matte jacket in RAL 2003 orange. The cable supports 5,000,000 bending cycles with dynamic and static bending radii of 7.5xD and 5xD, respectively. It includes a total shield, a power conductor cross-section of 2.5 mm², and a control wire count of 4 with a cross-section of 1.0 mm².
Internal Product Review
The RKL0051 motor power cable from Bosch Rexroth Indramat delivers excellent flexibility with 5,000,000 bending cycles and a dynamic bending radius of 7.5xD, making it ideal for demanding motion applications. Its PUR jacket is both adhesion-free and matte, ensuring long-term durability in harsh industrial environments. Total shielding further enhances signal integrity and operational reliability.
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Product Description:
The RKL0051 is a motor power cable produced by Bosch Rexroth Indramat for the RKL Motor Power Cables series. It serves as the movable link between an Indramat drive controller and its corresponding servo or spindle motor, carrying motor phase power and low-level control signals through continuous-motion paths in machine tools, robots, and handling modules. Its design allows the cable to be routed through drag chains or torsional joints without exceeding mechanical fatigue limits or compromising electrical integrity. The combination of power and control conductors reduces the number of separate cable runs required between the controller and motor.
The cable endures up to 5,000,000 flex cycles before conductor fatigue may occur under the stated operating conditions. For dynamic runs, it must not be bent more tightly than a 7.5 × D radius, while fine-strand copper and a high-slip separator support repeated movement. The bulk cable designation is INK0602, which indicates the insulation system and conductor arrangement used for this assembly. An outer jacket made of PUR with an adhesion-free, matte finish resists cutting fluids, weld spatter, and abrasion during track travel. Its matte surface also minimizes dirt buildup that could increase wear against drag-chain liners.
The cable has a conductor resistance of 7.98 Ω/km at 20 °C, allowing predictable voltage drop across typical axis lengths. It contains four control wires, each with a cross-sectional area of 1.0 mm², for brake and sensor channels. This conductor count accommodates standard temperature-monitoring and holding-brake circuits within the same cable assembly. Three power cores, each with a cross-sectional area of 2.5 mm², transmit phase current to the connected motor. A molded RLS0749/K03 controller plug mates directly with compatible Rexroth drive terminals, while the opposite end uses an RLS1301/C03 motor connector. A total shield surrounds the conductors to reduce electromagnetic emissions and protect low-level signals from electrical interference. The molded terminations also provide strain relief where the cable enters each connector during repeated movement.
