173886 - Miller 24V Wire Feed Gear Motor Replacement for 080802

Precision Engineering for Consistent Wire Delivery

The Miller 173886 Gear Motor is a critical electromechanical component designed to restore the functionality of high-performance wire feeding systems. In Gas Metal Arc Welding (GMAW) and Flux Cored Arc Welding (FCAW), the consistency of the wire feed speed (WFS) is paramount to maintaining a stable arc. Variations in motor speed, often caused by worn brushes, armature fatigue, or gear lash in aging motors, can lead to arc hunting, burn-back, and irregular bead profiles. This OEM replacement unit is engineered to the exact specifications required by Miller control boards, ensuring that the voltage-to-speed relationship remains linear and predictable.

Operating at 24 Volts DC with a nominal speed of 110 RPM, this gear motor provides the necessary torque to pull welding wire through long conduit liners and torch assemblies without stalling. The integral gear reduction box steps down the high-speed DC motor output to a usable feed rate while multiplying torque, allowing the system to overcome resistance caused by liner friction or contact tip drag. The assembly is built with industrial-grade materials to withstand the thermal cycling and duty cycles common in heavy fabrication environments.

As a direct replacement for the legacy part number 080802, the Miller 173886 eliminates compatibility guesswork. It features the correct mounting bolt pattern, shaft dimensions, and electrical connectors for seamless integration into existing Millermatic and S-Series wire feeders. Utilizing genuine OEM parts for repair maintains the equipment's UL/CSA listings and ensures that the drive rolls engage the wire with the force intended by the original design engineers.

Technical Specifications:

• Input Voltage: 24V DC
• Output Speed: 110 RPM
• Construction: Sealed Gearbox, Permanent Magnet DC Motor
• Application: Wire Feed Drive Assembly