- Retail-margin value, dealer-backed price. Lincoln factory demo units sell at 2–3× the margin of grey-market used welders because they carry full Lincoln Electric factory documentation, traceable serial numbers, and a complete 3-year manufacturer warranty — the same coverage as a brand-new machine.
- Complete Ready-Pak out of the box. This SKU ships with the Precision TIG 225 power source, PTA-17 TIG torch, foot amptrol, gas regulator, work cable, electrode holder, and the K2348-1 understorage cart — zero accessory sourcing required.
- Ready-to-ship from WeldingMart's warehouse. No 8–12 week lead times on new equipment. Inspect, order, weld. Fast U.S. ground shipping to the lower 48; LTL freight for crated pallet.
| SKU / Model | U2535-2 (Factory Demo) |
| Output Range | 5–230 A (TIG AC/DC); 10–190 A (Stick) |
| Polarity | AC/DC |
| Input Voltage | 208 / 230 V, 1-Phase, 60 Hz |
| Input Current | 40% DC: 61 A (208 V) / 55 A (230 V); 60% DC: 52 A / 47 A |
| Duty Cycle | 40% @ 230 A (230 V) |
| Open Circuit Voltage | 75 V max |
| AC Frequency Range | 20–150 Hz |
| Net Weight | 261 lbs / 118.4 kg (machine + cart) |
| Dimensions (H×W×D) | 31.2 in × 19.8 in × 38 in (794 × 503 × 966 mm) |
| Warranty | 3 Years — full factory warranty |
| Condition | Factory Demo / Reconditioned — Lincoln Electric certified |
- Precision TIG 225 Power Source
- PTA-17 TIG Torch, 12.5 ft 1-piece — K1782-1
- Foot Amptrol 25 ft (6-pin) — K870
- Gas Regulator with Hose
- Work Cable & Clamp — 10 ft
- Electrode Holder & Cable
- Input Power Cord — 9 ft with NEMA 6-50P plug
- TIG Adapter Kit PTA-9/PTA-17 — K1622-1
- Caliber Collet, Collet Body, Back Cap, and Cup kit (3/32 in)
- 2% Ceriated Tungsten Electrode, 3/32 × 7 in — KP4722-332
- Understorage Cart — K2348-1
- TIG Procedure Guide & GTAW Handbook
The Precision TIG 225 uses standard 17/18/26-series torch fittings. Recommended add-ons from WeldingMart:
- TIG Torches — PTA-9, PTA-17, and PTA-26 air-cooled torches in 12.5 ft and 25 ft lengths
- TIG Filler Rod — ER70S-2, ER308L, ER4043, and ER5356 in 1 lb and 10 lb spools
- Argon Gas Regulators — single-stage and dual-stage flowmeters for argon and argon/helium blends
- TIG Welding Supplies — collets, collet bodies, back caps, cups, and tungsten electrodes
The Precision TIG 225's 5–230 A range and AC/DC output make it a versatile workhorse across a wide spectrum of industries:
- Automotive fabrication & restoration. Precise heat control on thin sheet steel, 4130 chrome-moly tubing, and aluminum body panels. AC Auto-Balance keeps oxide removal consistent without overcleaning on hammered or bare aluminum surfaces.
- Aerospace & defense maintenance. Micro-Start II technology enables arc initiation at currents as low as 5 A — critical for thin titanium skins and aluminum structural repairs where burn-through is catastrophic.
- Fine sheet metal & stainless steel. DC TIG with pulse mode reduces heat input and distortion on 16–22 gauge stainless for food-grade equipment, pharmaceutical tubing, and decorative fabrication.
- Vocational training & educational labs. Intuitive panel layout, foot amptrol compatibility, and wide amperage range accommodate students welding everything from 1/16 in aluminum coupons to 3/8 in steel plate in a single session.
- Marine & boat repair. AC aluminum welding with adjustable AC balance handles heavily anodized or salt-corroded surfaces without excessive tungsten balling or arc wandering.
A factory demo (also called factory reconditioned) unit is a machine that left Lincoln Electric's manufacturing line, was used for trade show demonstrations, distributor evaluations, or in-house testing, then returned to Lincoln's certified refurbishment center. Each unit is inspected, repaired to factory spec, re-tested, and assigned a new U-prefix serial number. You get a fully functional machine at a below-retail price.
Yes. Lincoln Electric backs all certified factory demo units with the same 3-year manufacturer warranty that covers a brand-new machine. Warranty claims go directly through Lincoln's authorized service network — no third-party limitations.
The cart (K2348-1 understorage cart) is included in this Ready-Pak SKU. You also receive the torch, foot amptrol, gas regulator, work cable, and electrode holder — everything needed to strike an arc the day the pallet arrives.
The electrical and mechanical specifications are identical — same output range, same duty cycle, same AC frequency control and Micro-Start II technology. The primary differences are cosmetic (demo units may show light surface marks from trade-show handling) and price. The U2535-2 is typically priced 15–25% below the current MAP of a new K-series unit.
WeldingMart accepts returns on factory demo welding machines within 30 days of delivery for units that arrive with manufacturing defects or transit damage documented at the time of delivery. Contact our team at 1-800-WeldingMart for RMA authorization before returning any equipment.
Looking for the brand-new version? See brand-new Precision TIG 225 or browse all Lincoln TIG Welders and our full used TIG welders collection.
The Lincoln Factory Demo Precision TIG 225 TIG Welder Ready-Pak with Cart delivers exceptional welding performance with unmatched versatility, offering the widest operating range in its class with an impressive 5 to 230 amp output capability. This comprehensive welding solution incorporates Lincoln Electric's patented Micro-Start II technology, a revolutionary advancement that significantly enhances arc initiation and stability throughout the welding process, enabling operators to achieve remarkably precise welds and superior crater fills across diverse material types and thicknesses. The Ready-Pak configuration provides a complete, mobile welding station with the inclusion of a purpose-designed cart that enhances workspace organization while providing convenient mobility within shop environments. This factory demonstration unit showcases the Precision TIG 225's exceptional capabilities in a ready-to-use package, making it the ideal solution for small automotive repair shops, fabrication operations, and vocational training facilities requiring professional-grade TIG and Stick welding performance with simplified setup and operation.
The Precision TIG 225 excels through its intuitive operator interface that dramatically simplifies the welding process while maintaining advanced capabilities for experienced welders. The straightforward control panel allows operators to quickly select welding mode and polarity before beginning production, reducing setup time and enhancing productivity. For aluminum welding applications, the system's innovative AC Auto-Balance technology automatically optimizes the critical cleaning-to-penetration ratio, ensuring consistent, high-quality welds without requiring constant operator intervention. When applications demand precise control, the system enables complete manual adjustment of the AC balance, allowing skilled operators to increase penetration for thicker materials or enhance cleaning action when working with heavily oxidized surfaces. The integrated TIG pulser functionality provides sophisticated heat management capabilities, enabling precise control over heat input to minimize material distortion while also moderating filler metal deposition for consistent bead appearance and enhanced quality in challenging applications.
The Lincoln Precision TIG 225 Ready-Pak with Cart delivers exceptional operational versatility through its comprehensive feature set designed for professional welding environments. Beyond its advanced TIG capabilities, the system provides outstanding Stick welding performance with the capacity to handle electrodes up to 5/32 inch (4.0 mm) in diameter, including demanding types such as Fleetweld 5P+ (E6010), making it a truly multi-process solution for diverse fabrication requirements. The integrated 115V auxiliary power receptacles enhance workshop productivity by enabling operators to power additional equipment such as water coolers or power tools directly from the welding system, eliminating the need for separate power connections. The Ready-Pak's included cart provides stable mobility and convenient storage for welding accessories, while the factory demonstration configuration ensures the system has been thoroughly tested and verified for optimal performance. This comprehensive approach to TIG and Stick welding makes the Precision TIG 225 Ready-Pak with Cart an exceptionally versatile solution for applications ranging from automotive repair and general fabrication to maintenance operations, marine applications, and educational training—delivering professional-grade capabilities with simplified operation for welders of all skill levels.
- Precision TIG 225 Welder
- Torch Parts Storage Compartment
- Torch Hanger
- Work Cable & Clamp - 10 ft (3.0 m)
- Removable Lift Eye
- Input Power Cord - 9 ft (2.7 m) with NEMA 6-50P Plug
- NEMA 6-50R Receptacle
- TIG Procedure Guide
- GTAW (TIG) Handbook
- 12 ft (3.6 m) Ultra-Flex Cable
- Gas Regulator with Hose
- 2% Ceriated Premium Tungsten Electrode, 3/32 x 7 in | KP4722-332
- Precision TIG 225 Understorage Cart | K2348-1
- Caliber Back Cap - Long, 17/18/26 Torches - 2/pack | KP4746-L
- Caliber Collet Body Cup - #7, 17/18/26 Torches - 2/pack | KP4756-7
- Caliber Collet - 3/32" (2.4 mm), 17/18/26 Torches - 3/pack | KP4750-332
- Caliber Collet Body - 3/32" (2.4 mm), 17/18/26 Torches - 2/pack | KP4752-332
- TIG Adapter Kit - PTA-9/PTA-17 | K1622-1
- Foot Amptrol - 25 ft (7.6 m) (6 pin) | K870
- PTA-17 TIG Torch (12.5 ft 1pc) | K1782-1
- Industry-leading operating range spanning from 5 to 230 amps for exceptional application versatility.
- Patented Micro-Start II technology delivering superior arc initiation, stability, and precision.
- Innovative AC Auto-Balance automatically optimizing aluminum welding performance.
- Manual AC Balance control enabling precise adjustment of cleaning action and penetration.
- Integrated TIG pulser functionality for minimizing distortion and controlling bead appearance.
- Outstanding Stick welding capabilities supporting electrodes up to 5/32 inch (4.0 mm).
- Integrated 115V auxiliary power receptacles for water coolers and power tools.
- Intuitive user interface simplifying setup and operation for welders of all skill levels.
- Complete Ready-Pak configuration with mobile cart enhancing organization and portability.
| Dimensions (H x W x D) | 31.2 in x 19.8 in x 38 in (794 mm x 503 mm x 966 mm) |
| Net Weight | 261 lbs (118.39 kg) |
| Input Voltage | 208/230 |
| Input Current | 40% Duty Cycle: 61/55A, 60% Duty Cycle: 52/47A |
| Input Hertz | 60 |
| Input Phase | 1 |
| Input Power | 208/230/1/60 |
| Mode Icon | CC |
| Output Range | 5-230A Max OCV: 75V |
| Polarity | AC/DC |
| Included Components | Precision TIG 225 Power Source Mobile Undercarriage Cart TIG Torch and Cable Assembly Work Clamp and Cable Gas Regulator/Flowmeter Gas Hose Electrode Holder and Cable Accessory Kit |
| Typical Application | Automotive Brewery Distillery General Fabrication Maintenance & Repair Marine Applications Marine Fabrication & Repair Pharmaceutical Equipment Power Plants Repair Welding Shipbuilding |
| Warranty | 3 Years |