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0558004357 - ESAB PT-35 Plasma Torch Nozzle Retaining Cup

Packaging: pack of 1

Sorry, product has been discontinued by the vendor.

SKU: ESB0558004357 Categories: ,

OVERVIEW

Technical Overview of the ESAB PT-35 Nozzle Retaining Cup

The ESAB 0558004357 Nozzle Retaining Cup is a critical component designed exclusively for the PT-35 plasma cutting torch, commonly found on ESAB PowerCut series machines. This component serves a dual purpose: it mechanically secures the consumable stack—specifically the nozzle and swirl baffle—against the torch head, and it acts as a thermal and electrical barrier. Manufactured from a specialized high-temperature composite material, this retaining cup is engineered to withstand the extreme radiant heat generated by the plasma arc without deforming or losing its dielectric properties.

In the plasma cutting process, the geometry of the torch front-end is paramount. The retaining cup ensures that the nozzle is perfectly centered relative to the electrode. Any misalignment caused by a worn or non-OEM cup can lead to a skewed arc, rapid nozzle wear, and poor cut quality (such as excessive bevel or dross). Furthermore, the cup directs the shielding gas flow around the arc, which assists in cooling the nozzle and constricting the plasma stream for higher energy density. The 0558004357 features precision-molded threads that ensure a tight gas seal, preventing leaks that could disrupt the plasma gas pressure and lead to arc instability.

Maintenance professionals understand that the retaining cup is a wear item, though it lasts longer than nozzles or electrodes. It is susceptible to damage from molten metal spatter, impact drops, and cross-threading. Inspecting the cup for cracks, burns, or thread damage during every consumable change is recommended. Using this genuine ESAB part guarantees compatibility with the PT-35's specific airflow requirements and safety interlocks, ensuring the equipment operates within manufacturer specifications.

Key Technical Specifications

  • Compatibility: Exclusively for ESAB PT-35 Plasma Torches.
  • Material: Thermally stable, impact-resistant composite.
  • Function: Secures nozzle/baffle and directs shield gas.
  • Part Number: 0558004357.
Additional Information
Packaging Description:1 Per Ea, pack of 1
Torch Model:PT-35
Part Type:Retaining Cup
Compatible Process:Plasma Cutting
----- new values below ----
Torch Model:PT-35
Part Type:Retaining Cup
Compatible Process:Plasma Cutting
Brand:ESAB
Packaging Description:1 Per Ea

INCLUDED

  • 1 x ESAB PT-35 Nozzle Retaining Cup (0558004357)

APPLICATIONS

  • Plasma cutting of mild steel, stainless steel, and aluminum.
  • Automotive repair and fabrication.
  • HVAC ductwork cutting.
  • Light to medium industrial fabrication.
  • Maintenance and repair operations (MRO).

FAQ

This retaining cup is designed specifically for the ESAB PT-35 plasma torch.

The retaining cup should be replaced if it shows signs of cracking, severe burns, thread damage, or if it no longer holds the nozzle securely. It lasts longer than nozzles and electrodes but is still a consumable.

Yes, this is the genuine OEM ESAB part number 0558004357.

No, this cup is specific to the PT-35 model. Other torches use different retaining cups with different thread pitches and dimensions.

Yes. A damaged or worn cup can cause the nozzle to sit improperly, leading to a skewed arc and poor cut quality. It also ensures proper gas flow.

It is made of a high-temperature resistant composite material designed to withstand the heat of the plasma arc and provide electrical insulation.

No, this is the retaining cup only. Nozzles, electrodes, and swirl baffles are sold separately.

Rapid burnout can be caused by piercing too close to the plate (blowback), using the wrong amperage settings, or poor gas flow. Ensure you are using the correct standoff distance.

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