Product Details:

REXROTH 109-0943-4A03-02 is a prefabricated shielded power cable assembly for Bosch Rexroth legacy modular servo nutrunner spindle, dedicated power wiring to supply the spindle servo motor. It adopts matched 4A03 connector terminals for plug-and-play connection between the tightening controller drive unit and spindle motor. This spare cable assembly belongs to the discontinued tightening system series, most available stock are refurbished replacement parts for old automotive fastening stations.

This cable transmits the main power for the spindle servo motor, working together with separate angle signal cable and torque transducer to complete dual torque-angle closed-loop fastening control. The outer shielding layer suppresses electromagnetic interference generated by inverters and workshop equipment, avoiding power noise disturbance to the torque and angle feedback signals. It is purely a power transmission harness, without built-in signal cores, sensor or brake.

This variant is standalone power wiring assembly. It is installed on fixed automated tightening spindles and rotary multi-station fastening fixtures. The cable jacket is oil-resistant and wear-resistant, suitable for workshop environments with coolant splash and repeated bending movement. The connector tail is equipped with strain relief structure to prevent wire breakage caused by vibration and cyclic swing. When connectors are properly locked and mated, the connection end reaches IP54 protection grade against dust and incidental liquid splash.

It cooperates fully with Rexroth tightening spindles, transducers and controllers. All fastening sequences and quality parameters are configured via Rexroth tightening software. Every finished cable passes factory validation including continuity test, insulation resistance test, voltage withstand inspection and bending cycle endurance test to guarantee stable power supply performance in multi-shift automated fastening production lines.

It is widely deployed on automotive powertrain assembly stations, new energy battery module fastening lines, household appliance bolt joining fixtures and multi-spindle tightening automation cells. Typical application scenarios include spindle power supply wiring assemblies, mixed-model fastening power harnesses, renovation spare cables for old nutrunner systems and replacement wiring for refurbished spindle units. Automation integrators select this Rexroth 4A03 power cable assembly for its stable power transmission, wear-resistant construction and seamless matching with Rexroth nutrunner tightening ecosystem.