RKG0063 by Bosch Rexroth Indramat

The RKG0063 cable is manufactured by Bosch Rexroth Indramat and belongs to the RKG Encoder Cables series. This component is supplied as an encoder feedback link that carries incremental or absolute position signals between a servo motor encoder and the corresponding drive amplifier, allowing the drive to correct speed and shaft angle in real time during closed-loop motion. Its construction and connector assignment are matched to Indramat drive systems so the feedback wiring can be routed without custom terminations or adapter leads.

The unit is identified as an Encoder Cable, which means its shielding and impedance are suited to low-voltage differential encoder channels rather than power conductors. At the motor end, the interface is a keyed Plug Connector RGS1781, while the cabinet end terminates with a matching Plug Connector RGS1782. The keyed housings help prevent cross-connection during service, and this separation supports signal integrity where motor currents and switching noise are present nearby. Flex-rated jacketing endures up to 5,000,000 bending cycles, so the cable can follow continuously moving axes such as gantry carriages. Under dynamic motion, conductor stress is limited by a minimum bend radius of 7.5 × D, where D is the outer diameter.

The construction is tagged as Basic, indicating a standard PVC jacket rather than a specialized chemical-resistant formulation, and the assembly is delivered as a ready-made harness that needs no field crimping. When the machine is parked or the cable is routed in a fixed tray, the static bend limit tightens to 5 × D, allowing a smaller loop without fatiguing copper strands. Continuous operation is permitted in ambient temperatures from -40 to +80 °C, which covers most plant environments. The same temperature range applies to storage, so the cable can be kept in inventory without special climate control.