Product Details:

REXROTH 115D-0-CS-4-C/130-A-0/WJ520LX/S01 is a dedicated DC servo motor for Bosch Rexroth legacy modular nutrunner tightening spindle, WJ520LX stands for this motor type. It operates at 130V, features low inertia rotor and fast dynamic response for high-cycle bolt fastening tasks. This legacy motor is discontinued, and most available stock are refurbished spare replacements for old automotive fastening stations.

This servo motor works with resolver or encoder angle feedback and torque transducer to realize dual closed-loop torque and angle fastening control. It supports fast forward rotation and precision controlled tightening stages. Separate power and signal wiring reduces electromagnetic interference from inverters and workshop equipment. It is a standalone motor unit without gearbox, torque transducer or built-in holding brake.

The internal winding adopts Class F insulation and integrates PTC temperature sensor for overheat protection. The motor housing reaches IP54 protection grade against workshop dust and incidental coolant splash. Optimized magnetic design suppresses torque ripple for smooth, stable torque output on safety-critical bolt joints. Standard flange interface supports modular assembly with gear unit and torque sensor for convenient on-site replacement.

All tightening logic and quality parameters can be configured via Rexroth tightening software. Every finished motor passes factory inspection including feedback signal matching test, insulation resistance test, cyclic start-stop endurance test and vibration stability test to guarantee reliable operation in multi-shift automated fastening production lines.

It is widely deployed on automotive powertrain assembly stations, new energy module fastening lines and static torque calibration benches. Typical application scenarios include spindle power drive units, spare parts for aging nutrunner systems and drive components for refurbished spindle assemblies. Automation integrators select this Rexroth motor for its quick dynamic response and good compatibility with Rexroth nutrunner tightening ecosystem.