RKL4480 by Bosch Rexroth Indramat

The Bosch Rexroth Indramat RKL4480 is a flexible motor power cable in the RKL Motor Power Cables series for linking Indramat servo motors to their drive amplifiers in automated machinery. This pre-assembled lead carries both the high-current supply lines and low-level auxiliary circuits in a single jacket, simplifying routing inside cable chains and panels while maintaining the signal separation required in industrial automation. Its molded strain relief supports reliable routing through moving machine sections, and the pre-assembled design avoids field termination at the motor connection.

In the power circuit, the cable provides 3 copper conductors, each with a cross-section of 16.0 mm², for continuous motor currents common to medium-frame synchronous drives. These cores are grouped with the protective earth conductor, which is color-coded GNYE to meet safety marking requirements. The overall geometry of 3x16 mm² + PE + 4x1.5 mm² shows how the power and auxiliary conductors are arranged under one sheath. The jacket compound and insulation sequence follow the Bosch Rexroth bulk designation INK0606, a cable construction chosen for oil resistance and torsional flexibility on moving axes. This family coding keeps the cable aligned with the electrical performance expected at the drive connection points.

Auxiliary functions such as temperature sensing or brake release are carried by 1.5 mm² conductors, and the cable includes four of these cores so separate low-voltage circuits can be routed within the same assembly. At the motor end, a keyed circular plug identified as INS0386 is factory crimped, so field wiring is limited to the cabinet side only. The keyed plug also helps maintain proper orientation at the motor interface during installation. The stator terminal housing is dimensioned for size 4, matching the plug shell and strain-relief diameter to the motor junction box. These features keep low-voltage circuits separated from the power conductors and keep cabinet-side wiring straightforward.