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The Tweco 2050-2178 (Model 175M-N) is a specialized power pin assembly intended for use with Tweco MIG guns requiring a Miller-style backend termination. This component serves as the primary interface between the MIG gun's cable assembly and the wire feeder drive housing. It is responsible for three critical functions: conducting the welding current from the power source to the gun, guiding the welding wire into the liner, and channeling the shielding gas into the cable assembly.
Technically, the 175M-N plug is machined to fit the specific receptacle dimensions of Miller wire feeders. It typically features the necessary geometry to establish a gas-tight seal within the feeder's power block. The "175" designation often correlates with the amperage class of the gun it is designed for, typically light-to-medium duty torches, though verification with specific gun breakdown diagrams is recommended. The assembly includes the brass body and necessary retention features to lock securely into the gun's rear block.
Proper installation of the 175M-N plug is essential for preventing "burn-back" caused by arcing at the power pin, a common issue when using ill-fitting aftermarket adapters. The brass construction offers excellent conductivity and resistance to oxidation. When replacing this part, it is also advisable to inspect the liner and the condition of the feeder's receptacle to ensure a complete system restoration. This part is identified by the industry standard part number 2050-2178.
Installation and Compatibility:
| Additional Information |
|---|
| Brand:Tweco |
| Item:Power Pin |
| Back End:Miller |
| Model:175M-N |
| Part Number:2050-2178 |
| Material:Brass |
| Packaging Description:1 of each |
