RKL4708 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4708 is a motor power cable from the RKL Motor Power Cables series. It features a PUR jacket, a diameter of 17.0 mm, and supports a power conductor cross-section of 4.0 mm². The cable is designed for 5,000,000 bending cycles and operates at up to 600 V AC.
Internal Product Review
The RKL4708 is a robust motor power cable from Bosch Rexroth Indramat's RKL series, featuring a durable PUR jacket and 4x4.0 mm² power conductors for reliable high-power transmission. Designed for dynamic applications, it withstands up to 5,000,000 bending cycles with a flexible bending radius of 7.5xD. This cable is a dependable choice for demanding automation environments requiring longevity and flexibility.
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Product Description:
The RKL4708 motor power cable is produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It links a drive controller to a servo motor so that three-phase power and auxiliary signals reach the axis. In automated cells, this prefabricated cable shortens installation time, maintains stable electrical characteristics, and supports continuous movement in drag chains or robotic routing systems. The assembled design also eliminates the need to terminate individual conductors during installation.
Bending endurance reaches 5,000,000 cycles, indicating how many flexing motions the PUR jacket can tolerate under the rated operating conditions. The cable has an overall diameter of 17.0 mm, which helps determine the required sizes for drag-chain separators and grommets. Its power conductors can carry up to 600 V AC. The abrasion-resistant PUR sheath also protects the conductors from coolant exposure. During fixed routing, the cable requires a minimum bend radius of 5 × D. Inside the sheath, the 4x4.0 + 2x(1.0)StC + 2x(1.5)StC layout places four 4.0 mm² power conductors beside screened control pairs. The 1.0 mm² control pair connects to pins 5 and 6, while the 1.5 mm² pair connects to pins 7 and 8 to accommodate auxiliary current. The copper conductors can operate at temperatures up to 80 °C, and the 4.0 mm² power cores help limit voltage drop over long cable runs.
For moving cable carriers, the minimum bend radius increases to 7.5 × D to keep conductor strain within acceptable limits during repeated motion. The bulk cable designation is INK0603. At the controller end, the prefitted plug is an RLS0722/K04 connector, with the power and control conductors already assigned to the required contacts. The motor end terminates with a keyed RLK1201 bayonet connector that seals against oil ingress. These prefitted interfaces reduce manual wiring because the screened control pairs and 4.0 mm² power conductors are already pinned in the correct arrangement. Internal shielding helps protect the auxiliary signals from electrical interference generated by the adjacent power conductors.
