RKL4514 Bosch Rexroth Indramat

Product Description:

The Bosch Rexroth Indramat RKL4514 is a multi-core motor power cable from the RKL Motor Power Cables series. It routes drive current from a servo amplifier to the matched motor and carries auxiliary control lines for feedback or brake signals. Within automated production lines the cable forms a static or continuously flexing link that supplies phase current, protective earth and low-level control voltages while maintaining mechanical reliability under dynamic motion. The design targets cable chains, gantry axes and other moving installations that demand compact routing and long service life.

It withstands up to 5,000,000 bending cycles when installed in energy chains, provided the fixed section is laid to a minimum radius of 5 × D. The outer sheath diameter is 22.2 mm, housing a bundle of 8 cores that include three phase conductors, a dedicated GNYE protective earth and paired control pairs. The power conductors are dimensioned at 10.0 mm², allowing low voltage drop for typical 400 V drives. Separate pairs for encoder or brake logic are sized at 1.0 mm² for cores 5–6 and 1.5 mm² for cores 7–8 to match standard terminal blocks.

For dynamic axes the moving leg may be bent down to 7.5 × D without exceeding sheath strain, and the copper loop resistance is limited to 1.91 Ω/km at 20 °C, supporting efficient power transfer over extended lengths. Capacitive coupling toward ground is 1.0 nF/m, a value that helps maintain low electromagnetic interference with fast-switching inverters. Temperature ratings span +90 °C when the cable is fixed and a flexible limit of +80 °C during motion, enabling operation inside motor housings or closed cable ducts. Together with the GNYE earth core and careful conductor sizing these properties secure electrical safety and signal integrity under continuous duty.