Product Details:

REXROTH 112D-2-HD-4-C/130-A-01/WI520LX/S005 is a dedicated DC servo motor for Bosch Rexroth legacy modular nutrunner tightening spindle, WI520LX is the motor type for this part number. It runs on 130V power supply, equipped with low inertia rotor and fast dynamic response for high-cycle repeated bolt fastening. This legacy motor is discontinued, and most available stock are refurbished spare parts for old automotive fastening stations.

This servo motor works with resolver or encoder angle feedback and torque transducer to complete dual closed-loop torque and angle fastening control. It supports fast rotation and precision 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 brake.

The 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, delivering smooth torque output for safety-critical bolt joints. Standard flange interface supports modular assembly with gear unit and torque sensor for easy 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 stable 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 replacement parts for aging nutrunner systems and drive components for refurbished spindle assemblies. Automation integrators select this Rexroth motor for its fast dynamic response and seamless compatibility with Rexroth nutrunner tightening ecosystem.