Plasma
Copper
420156
45A-125A
AC220V
CNC
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Hypertherm Part Number: 420156
Common Name: Retaining Cap, Shield Cup.
Compatible Torch: Powermax125 / Powermax125® (Both hand-held and mechanized torches).Replaces Older Part
Number: 028372
Key Feature: This is the threaded outer body that holds all the internal consumables (electrode, nozzle, swirl ring) in place and provides the threading for the drag shield.
Primary Function: To securely house and align the critical plasma-generating consumables (electrode and nozzle) and provide a threaded connection point for either a drag shield (for contact cutting) or a shield cup (for standoff cutting).
Structural Component: It serves as the main structural body of the torch's front end. All other consumables assemble inside it.
Precise Alignment: The internal machining ensures the electrode and nozzle are perfectly concentric, which is critical for optimal cut quality and parts life.
Dual Function: It is designed to work with two different front-end attachments:
With Drag Shield (e.g., 420172): For hand-guided drag cutting.With Shield Cup (e.g., 028374): For mechanized cutting with a maintained standoff distance or for hand-cutting with a guide.
Durability: Made from a high-strength, engineered plastic that is resistant to heat and sparks, protecting the metal components inside.
Electrical Insulation: Its non-conductive material prevents accidental arcing between the torch body and the workpiece.
Ensures Secure Consumable Assembly: The Retaining Cap 420156 provides the critical clamping force needed to securely hold the nozzle, electrode, and swirl ring in perfect alignment. This prevents movement during operation, which is fundamental for achieving a stable, concentric plasma arc. Its reliable function is the cornerstone of a well-performing kit of powermax 125 consumables.
Maintains Optimal Gas Seal: Precision-machined threads and sealing surfaces on the 420156 cap create a tight seal between the torch body and the consumable stack. This prevents gas leaks, ensuring that all plasma and shielding gas is directed through the nozzle for efficient, high-quality cuts. A proper seal is vital for the efficiency of all your powermax 125 consumables.
Durable Threads for Long Service Life: Manufactured from high-strength, wear-resistant materials, the threads on the Retaining Cap 420156 are built to withstand repeated installation and removal cycles without cross-threading or stripping. This durability extends the life of the cap itself and protects the more expensive torch body threads, safeguarding your investment in powermax 125 consumables.
Promotes Consistent Cut Quality: By ensuring consumables are locked in the correct position, the 420156 cap directly contributes to consistent arc focus and gas flow. This translates to repeatable cut quality with minimal bevel, dross, and top-edge rounding, maximizing the performance potential of your other powermax 125 consumables.
Cost-Effective Torch Protection: A failing or damaged retaining cap can lead to gas leaks, poor cuts, and even damage to the torch body. The Retaining Cap 420156 acts as an affordable safeguard, preventing costly torch repairs. Regularly replacing this consumable as part of your powermax 125 consumables maintenance routine is a smart, preventative practice.
The Retaining Cap 420156 is a universal component used in both the 65A drag cutting sets and the 80A shielded sets for the Powermax125.
Drag & Cut Consumable Set (65A): Part Number 220971
This set includes: Electrode (220779), Nozzle (220778), Swirl Ring (220777), Retaining Cap (420156), and Drag Shield (420172).
Shielded Consumable Set (80A): Part Number 220990
This set includes: Electrode (220789), Nozzle (220788), Swirl Ring (220787), Retaining Cap (420156), and Shield Cup (028374).
Critical Distinction: The retaining cap itself is the same. The cutting amperage and technique are determined by the nozzle, electrode, and the front attachment (drag shield vs. shield cup) used with it.
The Retaining Cap 420156 is compatible with the hand-held and mechanized torches of the following systems:
Powermax125®
Powermax125® G3 series
Note: It is not compatible with the Powermax105, Powermax85, or older Powermax1000/1250 systems, which use different thread patterns and sizes.
Precision Component Manufacturer: Formanweld specializes in the manufacturing of precision plasma torch components. We understand that a part like the Retaining Cap 420156, though simple, must be made to exacting tolerances to function reliably, which is why we invest in precision CNC machining for all our powermax 125 consumables.
Material Science Expertise: We select specific, high-grade alloys for the 420156 cap that balance strength, wear resistance, and thermal properties. This ensures the threads remain durable through countless thermal cycles, a key consideration for any manufacturer of long-life powermax 125 consumables.
Complete Consumable System Supplier: As a powermax 125 consumables manufacturer, Formanweld produces the entire ecosystem of powermax 125 consumables, from electrodes and nozzles to swirl rings and this Retaining Cap 420156. This guarantees perfect compatibility and performance synergy between all parts.
Rigorous Dimensional & Thread Inspection: Every batch of 420156 caps undergoes stringent quality control, including thread gauge checks and dimensional verification. This ensures a perfect fit with the torch body and with other consumables, a non-negotiable standard for reliable powermax 125 consumables.
Global Industrial Supplier with OEM/ODM Service: Formanweld supplies this essential component to a global market. We also offer OEM/ODM services, allowing distributors to source the Retaining Cap 420156 and other powermax 125 consumables with custom packaging or branding, providing a versatile supply chain solution.
Retaining Cap 420156 for HP powermax 125 Plasma cutting torch consumables
We supply plasma cutting parts (Shield, Retaining cap, Nozzle, Swirl ring, Electrode)
We can provide the Hypertherm, Thermadyne, Kaliburn, kjellberg and Esab brand.
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