Product Details:

REXROTH 109-0943-4A19-00 is a prefabricated heavy-duty shielded power cable assembly for Bosch Rexroth legacy modular servo nutrunner spindle, equipped with 4A19 large-size connector, used to supply power for high-torque spindle servo motor. This cable belongs to the discontinued tightening spare series, and most available stock are refurbished replacement harnesses for old heavy-duty automotive fastening stations.

This cable transmits high-power supply for the spindle servo motor, working separately from the signal feedback cable. It cooperates with torque transducer and resolver/encoder angle feedback to complete dual closed-loop torque and angle fastening control. The thickened conductor design can withstand high continuous and peak current load of heavy spindle. The overall shielding layer suppresses electromagnetic interference generated by inverters and workshop equipment, avoiding disturbance to the weak torque and angle signal. It is purely power transmission wiring without built-in signal cores, sensor or brake.

This variant is standalone power wiring assembly. It is matched with heavy-duty nutrunner spindle units, widely used on automotive chassis, gearbox assembly stations and construction machinery bolt fastening fixtures. The outer jacket is oil-resistant, wear-resistant and resistant to coolant splash. The connector tail is reinforced with strain relief structure to prevent wire breakage caused by repeated swing and vibration during cyclic fastening operation. When properly locked, the connector mating end reaches IP54 protection grade against dust and incidental liquid splash.

It cooperates fully with Rexroth heavy spindle, transducer and controller. All tightening modes and quality parameters are configured via Rexroth tightening software. Every finished cable passes factory validation including continuity test, high-voltage insulation test, load current test and bending endurance test to guarantee stable power supply performance in multi-shift heavy-duty automated fastening production lines.

It is widely deployed on commercial vehicle axle assembly stations, construction machinery component fastening lines, large mechanical bolt joining equipment and high-torque torque test benches. Typical application scenarios include heavy spindle power supply harnesses, high-torque fastening wiring assemblies, renovation spare cables for old nutrunner systems and replacement wiring for refurbished heavy spindle units. Automation integrators select this Rexroth 4A19 cable assembly for its heavy current capacity, reliable shielding performance and seamless matching with Rexroth high-torque nutrunner tightening ecosystem.