The Lincoln Electric LN-25X with CrossLinc and True Voltage Technology (K4267-4) is a rugged portable industrial wire feeder designed for structural steel, shipbuilding, and construction environments where the welder must operate at a significant distance from the power source. CrossLinc technology eliminates the need for a separate voltage control cable — the welder controls output voltage directly at the feeder using the existing weld cable, reducing setup weight and complexity. This configuration includes an integrated flowmeter and ships with Twistmate/Dinse connector hardware.
| Parameter | Value |
|---|---|
| Model / SKU | LN-25X with CrossLinc, TVT, Flowmeter / K4267-4 |
| Wire Diameter Range (Solid) | 0.023–5/64 in. (0.6–2.0 mm) |
| Wire Diameter Range (Cored) | 0.035–3/32 in. (0.9–2.4 mm) |
| Wire Feed Speed Range | 50–780 IPM (1.3–19.8 m/min) |
| Drive Roll System | Maxtrac 4-roll heavy-duty cast aluminum |
| CrossLinc Voltage Control | Yes — control voltage at feeder, no extra cables |
| True Voltage Technology (TVT) | Yes — compensates for weld cable voltage drop |
| Flowmeter | Included |
| Gun Connector | Twistmate/Dinse |
| Trigger Interlock | Yes |
| Case Material | Replaceable, flame-resistant composite |
| PC Board Protection | Potted (moisture and corrosion resistant) |
| Tachometer Feedback | Yes — ensures accurate wire feed speed |
| Compatible Power Sources | FLEXTEC 450/500, Power Wave 455M/S500, Idealarc CV series |
| Weight | Approx. 16.5 lb (7.5 kg) |
The LN-25X K4267-4 is optimized for applications where distance from the power source is a constant operational challenge:
- Structural steel and bridge construction — Weld hundreds of feet from the power source while maintaining precise voltage control via CrossLinc over existing weld cables.
- Shipbuilding and marine fabrication — Portable design and flame-resistant case handle saltwater-adjacent environments and confined spaces within hull structures.
- Offshore platforms and industrial tanks — TVT corrects voltage drop across long cable runs common in large-scale vessel and tank construction.
- High-rise structural erection — Feeder moves up the building with the ironworkers; power source stays at grade level.
- General heavy fabrication — Shop applications requiring reliable 4-roll wire drive for cored wire on heavy plate.
The K4267-4 configuration delivers two proprietary Lincoln technologies that directly improve weld quality on long-lead setups:
- CrossLinc Technology — Transmits voltage control signals through the existing weld cable, eliminating a separate control cable. The welder adjusts voltage at the feeder panel without returning to the power source. Compatible with FLEXTEC 450/500 and Power Wave 455M/S500.
- True Voltage Technology (TVT) — Measures actual arc voltage at the feeder (not at the power source terminals), then commands the power source to compensate for cable resistance losses. The welder gets the voltage dialed in regardless of cable length or condition.
- Maxtrac Wire Drive System — Heavy-duty cast aluminum 4-roll drive with gear-driven rolls that resist wire slip on large-diameter cored wires. Tachometer feedback on the motor shaft closes the speed-control loop for consistent feed rates.
- Trigger Interlock Switch — Holds the arc active during long welds without continuous trigger pressure, reducing operator fatigue on extended runs.
- Potted PC Boards — Electronic assemblies are fully encapsulated in potting compound, protecting against moisture intrusion and corrosion in outdoor or marine environments.
- Replaceable Flame-Resistant Case — The outer housing is field-replaceable and rated flame-resistant, protecting internal components from weld spatter and jobsite impacts.
The LN-25X K4267-4 operates across a wide range of Lincoln power sources and gun types:
- Lincoln 4-Pack Rack FLEXTEC 450 (K2956-2) — Ideal multi-operator configuration; one LN-25X per FLEXTEC 450 output.
- Lincoln POWER WAVE 455M (K2202-1) — Full CrossLinc and TVT capability when paired with this advanced power source.
- Lincoln Magnum PRO and Magnum 300/400 MIG guns — Twistmate/Dinse connection is standard on these gun families.
- For high-torque applications feeding 3/32 in. cored wire, see the LN-25X Extra Torque K4267-5.
View all Lincoln wire feeders and welding accessories at WeldingMart.
What is CrossLinc technology on the LN-25X?
CrossLinc technology allows the welder to control output voltage directly at the LN-25X feeder by transmitting control signals through the existing weld cable. No additional control cable is required between feeder and power source. CrossLinc is active on compatible Lincoln power sources including FLEXTEC 450/500 and Power Wave 455M/S500.
What is True Voltage Technology (TVT)?
TVT measures actual arc voltage at the feeder rather than at the power source output terminals. The system then commands the power source to compensate for resistance losses in the weld cable, so the welder receives exactly the voltage set on the feeder panel regardless of cable length.
Does the K4267-4 come with a flowmeter?
Yes. The K4267-4 configuration includes an integrated flowmeter for shielding gas monitoring. If a flowmeter is not required, the K4267-5 (Extra Torque, no flowmeter, Tweco connector) offers an alternative configuration.
What wire sizes does the LN-25X feed reliably?
The LN-25X K4267-4 feeds solid wire from 0.023 to 5/64 in. (0.6–2.0 mm) and cored wire from 0.035 to 3/32 in. (0.9–2.4 mm). For heavy-duty cored wire up to 3/32 in., the Extra Torque K4267-5 variant provides higher drive force.
Is the LN-25X compatible with FLEXTEC 450 racks?
Yes. The LN-25X is a primary across-the-arc feeder for FLEXTEC 450 and FLEXTEC 500 power sources. When using CrossLinc, voltage control from the feeder requires a CrossLinc-compatible FLEXTEC or Power Wave power source.