Coupler 428248 for Powermax125 Plasma Cutting Torch Consumables Kit: Duramax Hyamp 180° machine torch coupler

1. Product Identification & Overview

• Hypertherm Part Number: 428248

• Product Name: Coupler, Duramax Hyamp Torch

• Common Name: Torch Connection Coupler, Quick-Disconnect.

• Primary Function: This component serves as the primary mechanical and electrical connection interface between the Duramax Hyamp torch body and the torch lead (the cable assembly that connects to the power supply). It incorporates a quick-connect/disconnect mechanism for easy torch installation and removal.

2. Key Features & Design Benefits

• Quick-Connect Function: Allows for fast and tool-less installation and removal of the torch body from the lead. This is crucial for maintenance, torch replacement, or switching between different torches (e.g., hand torch to machine torch).

• Multi-Passage Conduit: The coupler is a complex component that seamlessly connects:

• Coolant Hoses: Both supply and return lines for the torch's liquid cooling system.

• Gas Lines: For both plasma and shield gases.

• Electrical Connections: Carries the pilot arc current and the main cutting current.

• Control Signals: For communication between the torch and the power supply.

• Environmental Sealing: Provides high-quality seals to prevent leaks of coolant and gas, and to keep out contaminants like water and metal dust.

• Robust Design: Engineered to withstand the vibration, slight movement, and industrial environment of a CNC cutting table.

• Safety Interlock: The design often incorporates features that prevent disconnection under power or pressure, enhancing operator safety.

3. Compatible Systems

• Torch Body: This coupler is designed for use with the Duramax Hyamp Torch series for the Powermax125. This includes the 180° machine torch (body part number 428147) and other Hyamp torch configurations.

• Power Supply: Hypertherm Powermax125 and Powermax125 G3.

• Torch Lead: It is the interface between the torch body and the factory torch lead assembly (e.g., part number 228870 for a 25ft lead).

4. Relationship to Consumables and "Kit"

• Not a Consumable: The Coupler (428248) is not a wear item or consumable. It is a core component of the torch system itself.

• Long-Life Component: It is designed to last the life of the torch system and is only replaced in the event of damage or failure.

• Part of an Assembly: It may be listed as part of a "kit" because it is an essential part of the torch assembly. For example, a replacement torch body (428147) might be sold with this coupler pre-assembled.

5. How It Works & Location

The coupler is permanently attached to the end of the torch lead. The torch body then connects to this coupler. To connect:

1. Align the torch body with the coupler.

2. Push the torch body into the coupler until it seats.

3. Rotate the locking ring on the coupler to secure the connection.

This action simultaneously connects all coolant, gas, and electrical pathways.

6. When is this Part Needed?

You would typically purchase this part in two scenarios:

1. Repairing a Damaged Lead: If the coupler on the end of your torch lead is physically broken, the seals are leaking, or the electrical contacts are damaged, it is replaced with this part.

2. Torch Lead Assembly: When building or ordering a complete new torch lead assembly, this coupler is a integral component.

7. Symptoms of a Failing Coupler

• Coolant or Gas Leaks: Visible dripping from the connection point between the torch and lead.

• Unstable Arc: Intermittent operation or arc failure due to poor electrical contact.

• Error Codes: The power supply may display errors related to torch communication or cooling.

• Inability to Maintain Pressure: The system may struggle to maintain coolant or gas pressure.

The Coupler 428248 is a critical quick-connect interface for the Duramax Hyamp torch on a Powermax125 system. It is not a consumable but a durable component that provides the essential mechanical, electrical, coolant, and gas connections between the torch body and the main lead. Its proper function is vital for the reliable, leak-free, and high-performance operation of the mechanized plasma system.

Coupler 428248 for Powermax125 ,Plasma cutting torch consumables  
We supply plasma cutting parts (Shield, Retaining cap, Nozzle, Swirl ring, Electrode)
We can provide the Hypertherm, Thermadyne, kjellberg and Esab brand.
And the quality that we provide can achieve about 90% of the original ones.
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