INWELT PMX105 105A Non-HF Plasma Cutting Torch

105A Non-HF Plasma Cutting Torch for Heavy-Duty Metal Cutting

The INWELT PMX105 is an air-cooled handheld plasma cutting torch designed for professional fabrication, heavy-duty repair, industrial maintenance and high-output metal cutting.

The PMX105 platform is designed around 105A-class plasma cutting with a 60% duty cycle, non-high-frequency arc starting and Air/N₂ operation.

The standard torch assembly uses a 6 m cable, while multiple rear-connection and control configurations are available, including 1/4G, integrated or separate connections, central adapters, 2-wire, 4-wire and coaxial cable arrangements.

The current INWELT technical configuration specifies approximately 5.0–5.5 bar process-gas pressure, 255 L/min gas flow and approximately 120 seconds recommended post-flow.

INWELT also supplies a complete consumable range covering 45A, 65A, 85A and 105A cutting applications together with electrodes, swirl rings, shields, torch heads, handles and cable assemblies.

This allows welding and cutting equipment distributors, plasma equipment manufacturers and industrial users to source both complete torch assemblies and replacement parts through one product program.

INWELT PMX105 Technical Specifications

Before ordering, confirm the plasma power source, maximum operating current, non-HF starting system, rear connector, control wiring and gas requirements.

How the PMX105 Non-HF Plasma Cutting Torch Works

The PMX105 operates as part of a complete plasma cutting system consisting of the torch, plasma power source, process-gas supply and work connection.

Non-HF Arc Starting

The INWELT PMX105 uses a non-high-frequency arc-starting configuration.

Unlike an HF-start plasma torch, the starting sequence does not rely on a high-frequency ignition circuit.

This difference is important because HF and non-HF torch systems should not be treated as interchangeable.

The replacement torch must match the starting architecture of the plasma power source.

Air or Nitrogen Creates the Plasma Jet

Air or nitrogen flows through the torch head, swirl ring and cutting nozzle.

Electrical energy ionizes the gas and creates a high-temperature plasma arc.

The cutting nozzle constricts this arc into a concentrated plasma jet that melts electrically conductive metal while the high-velocity gas removes molten material from the kerf.

Post-Flow Removes Residual Heat

The current INWELT configuration specifies approximately 120 seconds of recommended post-flow.

Continued gas flow after the cutting arc stops helps remove residual heat from the torch head and consumables.

The plasma cutter's designed post-flow cycle should normally be allowed to finish before the system is switched off.

Key Features of the INWELT PMX105

105A-Class High-Output Cutting

The PMX105 is positioned for higher-output plasma cutting applications where substantially more current is required than 45A, 65A or 85A torch systems.

Its consumable system includes dedicated 105A cutting components, while lower-current consumables are also available for applications requiring reduced output.

60% Duty Cycle

The INWELT PMX105 is specified at a 60% duty cycle.

Duty cycle describes the operating time permitted at rated conditions during a defined test period before sufficient cooling is required.

Actual torch temperature can also be influenced by ambient conditions, gas flow, current, consumable condition and cutting technique.

Air-Cooled System

The PMX105 does not require a separate liquid-cooling circuit.

Air/N₂ is used as the process gas according to system configuration.

Correct gas flow is essential because it contributes to plasma formation, molten-metal removal and torch cooling.

6 m Standard Cable Assembly

A 6 m cable assembly provides practical reach for industrial workshop and fabrication applications.

Alternative cable and interface arrangements can be evaluated for OEM projects.

PMX105 Plasma Cutter Compatibility: What Buyers Should Check

One of the most important questions is whether a PMX105 replacement torch will work with a specific plasma cutter.

The machine's amperage alone is not enough to confirm compatibility.

Verify the Starting System

The plasma power source must use a starting system compatible with the PMX105's non-HF configuration.

If the original machine uses HF ignition, another torch design may be required.

Verify the Maximum Cutting Current

The PMX105 should be selected for a power source whose operating output is appropriate for the verified torch configuration.

Do not increase current beyond the torch and consumable ratings simply because the plasma power source can provide more amperage.

Verify the Rear Connector

Different PMX105 assemblies may use:

• 1/4G connections

• Integrated connections

• Separate connections

• Central adapters

• OEM adapters

Mechanical fit alone does not guarantee electrical compatibility.

Verify Trigger and Control Wiring

INWELT offers:

• 2-wire control

• 4-wire control

• Coaxial cable configuration

The machine's control circuit must match the selected assembly.

Provide Machine Information Before Ordering

For replacement projects, provide:

• Plasma cutter manufacturer

• Machine model

• Rated output current

• Original torch model

• Main torch connector photo

• Control-plug photo

• Existing cable arrangement

This provides a much more reliable compatibility check than selecting a torch only by the words “CUT105” or “CUT125.”

PMX105 Cable and Connector Configurations

The current INWELT PMX105 product range includes several complete 6 m cable assemblies.

A 5-pin plasma torch-side central adapter is also available under INWELT code IZX0078.

These configurations allow distributors and equipment manufacturers to match the torch assembly more closely to different plasma machine interfaces.

PMX105 Cutting Tips for 45A, 65A, 85A and 105A

One of the strengths of the PMX105 platform is the availability of multiple nozzle sizes for different operating currents.

45A Cutting Tip

INWELT Code: IVU0653-09

Specification:

Ø0.9 mm / PMX105 / 45A

This configuration is suitable for lower-current applications where reduced heat input or finer cutting may be preferred.

65A Cutting Tip

INWELT Code: IVU0653-11

Specification:

Ø1.1 mm / PMX105 / 65A

Use the 65A tip when operating within the corresponding current range.

85A Cutting Tip

INWELT Code: IVU0653-13

Specification:

Ø1.3 mm / PMX105 / 85A

This intermediate configuration provides higher output while remaining below the full 105A operating level.

105A Cutting Tip

INWELT Code: IVU0653-15

Specification:

Ø1.5 mm / PMX105 / 105A

The 105A cutting tip is the primary full-output consumable for the PMX105 platform.

Always match the nozzle diameter to the actual operating current.

Using a small-current nozzle at excessive amperage can shorten consumable life and negatively affect arc quality.

Should the PMX105 Page Include a 125A Tip?

The current INWELT spare-parts table also lists:

IVU0653-18 – Ø1.8 mm / 125A

This should only be promoted as part of the PMX105 operating range if INWELT engineering has verified that the complete torch assembly is approved for 125A operation.

If the PMX105 torch itself is rated for 105A, keep the 125A component in the spare-parts database only where its actual compatible torch/system is clearly identified.

For SEO and GEO, one verified product rating is stronger than mixing 105A and 125A claims throughout the same page.

PMX105 Electrode, Swirl Ring and Shield Components

Electrode

INWELT Code: IVB0032

Application:

PMX65 / PMX85 / PMX105

The electrode transfers electrical energy through the torch.

As the electrode wears, a pit develops at its center.

Replace the electrode before excessive wear causes unstable arc starting or accelerated nozzle damage.

105A Swirl Ring

INWELT Code: IVF3003

Application:

PMX105 / 105A

The swirl ring controls gas distribution around the electrode and nozzle.

Correct gas swirl helps stabilize the plasma arc.

Replace a swirl ring if it becomes cracked, burned or contaminated.

Outside Nozzles

Available INWELT configurations include:

IVS0693 – PMX65 / 85 / 105 / 6-hole

IVS0694 – PMX65 / 85 / 105 / 10-hole

These front-end components help control gas flow and protect the consumable stack.

Shield Components

The current PMX105 range includes shield configurations for lower-current and 105A applications.

Use the correct shield according to the cutting current and process.

PMX105 Cutting vs. Gouging Consumables

A high-output plasma system can be used for both cutting and metal removal when the correct consumables are installed.

Standard Cutting

Standard cutting consumables are designed to create a concentrated plasma jet capable of cutting through the workpiece.

They are appropriate for:

• Plate cutting

• Structural steel

• General fabrication

• Repair work

• Industrial metal processing

Plasma Gouging

Gouging removes metal without cutting fully through the workpiece.

Typical uses include:

• Weld removal

• Defect removal

• Back-gouging

• Joint preparation

• Repair and rework

• Removing old weld metal

Gouging requires the correct gouging nozzle and shield configuration.

Do not substitute standard cutting consumables where a dedicated gouging setup is required.

Drag Cutting, Stand-Off Cutting and Mechanized Cutting

Different cutting applications require different relationships between the torch and the workpiece.

Drag Cutting

When using a shield specifically designed for drag cutting, the operator can guide the shield along the material while maintaining the intended nozzle-to-work distance.

Do not drag an unprotected cutting nozzle directly across the plate unless the consumable system is designed for that operation.

Stand-Off Cutting

In stand-off cutting, the torch is held a controlled distance above the workpiece.

Correct stand-off helps reduce nozzle damage and can improve arc quality for appropriate consumables.

Mechanized Cutting

Machine and CNC plasma cutting require a dedicated straight machine-torch configuration.

Professional 105A systems commonly distinguish hand-torch consumables from mechanized consumables and may also use ohmic-sensing components for automated height control.

If the application is CNC cutting, use an appropriate PMXM105 or compatible machine torch rather than assuming a hand torch is interchangeable.

PMX105 Hand Torch vs. Machine Torch

Hand Torch

A manual PMX105 torch uses:

• Angled handle

• Operator trigger

• Manual travel

• Hand-controlled torch angle

Typical applications include fabrication, demolition, maintenance and repair.

Machine Torch

A machine torch normally uses:

• Straight body

• Fixed mounting

• CNC or automated control

• Defined mounting diameter

• Machine-controlled start

Machine applications may also require:

• Torch-height control

• Ohmic sensing

• CNC interface

• Defined cable routing

Hand and machine torches may share certain consumable components, but complete assemblies should not automatically be treated as interchangeable.

What Metals Can the PMX105 Plasma Torch Cut?

Plasma cutting works on electrically conductive materials.

When paired with a compatible plasma power source, the PMX105 can be used for materials including:

• Carbon steel

• Mild steel

• Stainless steel

• Aluminum

• Copper

• Brass

• Galvanized steel

• Other electrically conductive metals

Material properties affect practical cutting speed, edge condition, dross and maximum usable thickness.

How Thick Can a 105A Plasma Torch Cut?

A 105A torch rating does not by itself define one universal maximum plate thickness.

Actual cutting capacity depends on:

• Power-source design

• Material

• Input power

• Cutting current

• Consumable configuration

• Process-gas condition

• Travel speed

• Torch height

• Required edge quality

Professional plasma equipment normally separates:

Recommended cutting capacity
Thickness suitable for productive cutting with good results.

Maximum or slow-speed cutting capacity
Thicker material that can still be cut but at reduced speed.

Severance capacity
Maximum thickness that can be separated, typically with reduced edge quality.

For INWELT, publish specific thickness numbers only when you have a verified test chart for the complete system.

A first-party cutting chart containing material, current, thickness, speed, pressure and consumable part number would be much stronger for both SEO and generative search.

Recommended Gas Supply for the PMX105

The current INWELT specification lists:

• Process gas: Air / N₂

• Pressure: approximately 5.0–5.5 bar

• Gas flow: approximately 255 L/min

• Post-flow: approximately 120 seconds

Use Clean, Dry Compressed Air

Moisture, oil and contamination in compressed air can negatively affect:

• Arc stability

• Cut quality

• Electrode life

• Nozzle life

A suitable filtration and moisture-separation system should be used.

Check Pressure Under Operating Flow

Pressure measured with no gas flowing may differ from actual torch pressure during cutting.

Filters, regulators, fittings and long hoses can all cause pressure drop.

Follow the plasma cutter's proper pressure-setting procedure.

Industrial Applications for the PMX105

The PMX105 is designed for high-output professional metal cutting.

Typical applications include:

• Heavy metal fabrication

• Structural steel

• Shipbuilding

• Construction equipment

• Agricultural machinery

• Railway maintenance

• Heavy vehicle repair

• Industrial maintenance

• Scrap processing

• Demolition

• Weld removal

• Plate processing

Final torch selection should be based on machine compatibility and cutting requirements rather than industry name alone.

PMX105 Maintenance and Consumable Inspection

Inspect the Electrode

Replace the electrode when the center pit reaches excessive wear.

Running a severely worn electrode can damage the nozzle and reduce cutting stability.

Inspect the Cutting Tip

Check the nozzle opening for:

• Enlargement

• Oval shape

• Damage

• Heavy contamination

A damaged nozzle can cause angled cuts and poor edge quality.

Inspect the Swirl Ring

Make sure the swirl ring is clean, correctly seated and free from cracks.

Check the Shield

Inspect gas holes and insulating surfaces.

Replace damaged shields before cutting.

Inspect the Torch Head

INWELT lists IVZ0694 as a replacement torch head for PMX65/85/105.

Inspect the torch body for damaged threads, gas leakage and heat damage.

Inspect the O-Ring

The current parts system includes:

IFT0675 – 17 × 20.6 × 1.8 red silicone O-ring

Replace damaged or hardened seals to prevent gas leakage.

Spare Parts Details:

Our Catalog:

INWELT PLASMA TORCH CATALOG.pdf

Common PMX105 Cutting Problems and Solutions

Difficult Arc Starting

Check:

• Electrode condition

• Nozzle condition

• Gas pressure

• Work clamp

• Torch connector

• Machine starting-system compatibility

Excessive Dross

Check:

• Travel speed

• Current

• Plate thickness

• Torch height

• Gas flow

• Consumable wear

Angled Cut

Check:

• Nozzle orifice

• Torch angle

• Consumable alignment

• Gas distribution

Consumables Wear Too Quickly

Possible causes include:

• Current too high for the nozzle

• Contaminated air

• Excessive piercing

• Incorrect stand-off

• Worn electrode

• Incorrect assembly

Torch Overheating

Possible causes include:

• Excessive current

• Duty cycle exceeded

• Restricted gas flow

• Insufficient post-flow

• Damaged cable

• Loose electrical connection

Stop cutting and identify the cause before continuing.

OEM PMX105 Plasma Torch Manufacturing by INWELT

INWELT supplies plasma cutting torches and replacement components to professional B2B customers including:

• Plasma equipment manufacturers

• Welding and cutting equipment brands

• Distributors

• Importers

• Wholesalers

• Industrial suppliers

• Repair companies

• Aftermarket consumable suppliers

OEM and ODM projects can be evaluated according to machine and target-market requirements.

OEM and Private-Label Options

Customization may include:

• Customer branding

• Handle marking

• Product labels

• 6 m or customized cable assembly

• Rear connector

• 2-wire or 4-wire controls

• Coaxial cable

• Central adapter

• Private-label packaging

• Consumable kits

• Instructions and technical labels

• Carton and barcode requirements

For OEM projects, provide the plasma cutter specification, starting system, connector details and expected order volume.

Why Source PMX105 Torches and Consumables from INWELT?

INWELT supplies both complete plasma torch assemblies and corresponding replacement components.

The PMX105 product system includes:

• 45A cutting tips

• 65A cutting tips

• 85A cutting tips

• 105A cutting tips

• Electrodes

• 105A swirl rings

• Shields

• Outside nozzles

• Torch heads

• O-rings

• Handles

• Triggers

• Cable assemblies

• Central adapters

For distributors, this makes it possible to build a complete aftermarket product program rather than selling only the original torch assembly.

The use of exact INWELT part numbers also simplifies repeat ordering and spare-parts management.

Frequently Asked Questions About the PMX105 Plasma Cutting Torch

What amperage is the INWELT PMX105?

The page should be positioned around 105A-class operation unless INWELT engineering verifies an additional higher rating.

Does the PMX105 use HF ignition?

No.

The INWELT PMX105 uses a non-HF starting configuration.

The plasma power source must use a compatible starting system.

What gas does the PMX105 use?

The INWELT specification lists Air/N₂.

What operating pressure does the PMX105 require?

The current INWELT specification lists approximately 5.0–5.5 bar.

What gas flow does the PMX105 require?

The current technical data lists approximately 255 L/min.

What cable length is standard?

The standard PMX105 assembly uses a 6 m cable.

Which cutting tip is used at 45A?

INWELT lists:

IVU0653-09 – Ø0.9 mm / 45A

Which cutting tip is used at 65A?

INWELT lists:

IVU0653-11 – Ø1.1 mm / 65A

Which cutting tip is used at 85A?

INWELT lists:

IVU0653-13 – Ø1.3 mm / 85A

Which cutting tip is used at 105A?

INWELT lists:

IVU0653-15 – Ø1.5 mm / 105A

Can the PMX105 be used for gouging?

Yes, when the plasma power source and correct gouging consumables support the process.

Can the PMX105 cut stainless steel?

Yes.

A compatible plasma system can cut conductive stainless steel using appropriate operating parameters.

Can the PMX105 cut aluminum?

Yes.

Aluminum is electrically conductive and can be plasma cut with a correctly configured system.

How thick can the PMX105 cut?

There is no universal thickness determined by the torch alone.

Use the complete plasma cutter's tested recommended, maximum and severance capacities.

Can I use the PMX105 on any CUT105 machine?

No.

Starting system, connector, control wiring, gas supply and power-source interface must also match.

Are PMX65, PMX85 and PMX105 consumables interchangeable?

Some components are shared across multiple INWELT PMX models, but not every nozzle, shield, swirl ring or complete torch assembly is interchangeable.

Always check the current rating and INWELT part number.

Does INWELT manufacture OEM PMX105 plasma torches?

Yes.

OEM/ODM and private-label configurations are available for qualified equipment manufacturers, brands, distributors, importers and wholesalers.

Request a Quote for the INWELT PMX105 Plasma Cutting Torch

For faster compatibility confirmation, provide:

• Plasma cutter brand and model

• Rated output current

• Existing torch model

• Starting method

• Main torch connector photo

• Control-plug photo

• Required cable configuration

• Cutting or gouging application

• Required consumables

• Estimated purchase quantity

• INWELT or private-label branding requirement

INWELT can then confirm the appropriate PMX105 torch, cable and consumable configuration for your plasma cutting system.