RKL4702 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4702 is a ready-made power cable from the RKL Motor Power Cables series with a basic cable model and INK0650 bulk cable type. It features a main conductor cross-section of 1.5 mm², auxiliary conductor cross-section of 0.75 mm², and supports 5,000,000 bending cycles. The cable has a dynamic bending radius of 7.5xD and a static bending radius of 5xD.
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Product Description:
The RKL4702 is a ready-made power cable manufactured by Bosch Rexroth Indramat for the RKL Motor Power Cables series. In automated machinery, it forms the fixed electrical link between a drive controller and a synchronous servo motor, carrying phase, protective, and auxiliary circuits without requiring on-site assembly. Its preterminated format shortens installation time and reduces variation across multi-axis systems. The completed assembly also keeps the required conductors together within one cable, simplifying routing between the controller and motor.
Internally, the cable uses a main conductor cross section of 1.5 mm², which supports continuous motor current while limiting resistive heating. A separate auxiliary pair with 0.75 mm² conductors supports temperature sensors or brake-release signals, keeping the control wiring inside the same jacket. The copper cores are routed inside the INK0650 bulk sheath, which provides oil resistance and low outgassing in enclosed cabinets. Classified as the Basic model, this ready-made assembly eliminates cut-to-length work at the machine frame. Its flex life reaches 5,000,000 bending cycles in energy-chain service. A permitted dynamic bend radius of 7.5 × D allows the cable to tolerate rapid axis travel without excessive conductor fatigue. Its power-cable construction also meets electromagnetic compatibility shielding requirements for servo drives, helping limit electrical interference around sensitive control and feedback circuits.
A minimum static bend radius of 5 × D applies where the cable is clamped inside the control cabinet. The controller end is fitted with an RLS0721 plug, and its K02 keying helps prevent connection to an incompatible interface on an adjacent axis. On the motor side, a sealed RLK1201 terminal-box termination permits direct connection without on-site soldering. The preinstalled ends reduce field assembly work while protecting the conductor arrangement established within the jacket. Appropriate bend clearance should be maintained near both connections so the cable is not sharply folded where it enters the plug or terminal box.
