Lincoln LN-742H manual SPINDLES, STANDS, Adapters

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ACCESSORIES

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SUBMERGED ARC GUNS

The K112 gun and cable assembly is recommended for welding with 1/16 in. solid steel electrode at up to 500 amps. Gun cable length is 15 feet.

GMAW GUNS

An expanding line of Magnum GMA gun and cable assemblies are available to allow welding with solid and cored electrodes using the GMAW process. See the appropriate Magnum literature for descriptions of the 200-400 ampere air cooled guns and cables that are available. Gun cable lengths range from 10 to 25 ft. (3.0 to 7.5 m) and feed electrode sizes 0.025 in. to 5/64 in. (0.6 to 2.0 mm).

SPINDLES, STANDS, AND

ADAPTERS

There are a variety of spindles and wire reel adapters available for use with the LN-742. Select the desired setup according to your specific welding needs.

K162H SPINDLE

The K162H spindle is used for mounting Readi-Reels and 2 in. I.D. spools with a 60 lb capacity on a K303 or K376 Wire Reel Stand. When used with Readi-Reels, a Readi-Reel Adapter is required. For 8 in. O.D. spools, a K468 Spindle Adapter is available.

K363P 22 TO 30 LB READI-REEL ADAPTER

Adapts Lincoln Readi-Reel coils of 22 and 33 lb (10 and 14 kg) to a 2 in. (51 mm) spindle. Durable, molded plastic, one piece construction. Designed for easy loading -- adapter remains on spindle for quick changeover. (Included with K377.)

K376 AND K303 50 TO 60 LB WIRE REEL MOUNTING STANDS

The K376 50 to 60 lb Wire Reel Mounting Stand and the K303 Wire Reel Mounting Stand are the same with the exception that the K303 stand includes a dust shield. The assembly includes a framework to which is attached the 50 to 60 lb wire reel, a mounting spindle, a lift bale, and a cable clamp for fastening the input cable assembly. It is easily mounted to the basic wire feed unit by following the Attaching the Wire Reel Stand procedure at the end of this section.

UNIVERSAL WIRE REEL STAND (K1524-1)

Includes a 2" (51mm) O.D. Spindle with adjustable brake and two locations for mounting the spindle to allow for the mounting of 50 - 60lb, 10 - 30 lb, 13 - 14lb, and 8" O.D. coils with proper spindle adapters. (See OPERATION section) Capable of being mount- ed on the top of a suitable power source or surface without the need for any other mounting kit. Optional features available for this stand include:

K1555-1 insulated lift bale

K1556-1 caster kit

K1557-1 swivel platform.

60 LB. (27.2 KG) COIL ADAPTER (K1504-1)

Permits 50-60 lb. (22.7-27.2 Kg) coils to be mounted to a 2" (51mm) spindle.

K1551-1 INSULATED LIFT BALE: Provides a bolt on lift bale with an electrically insulated lift hook.

K1556-1 CASTER KIT: Comes with 4 light duty 2" O.D. casters which mount in place of the rubber feet on the wire stand. Use in light duty applications where portability is required. Can be used in combi- nation with the K1557-1 swivel platform.

K1557-1 SWIVEL PLATFORM: Allows for the mounting of the wire feeder reel stand assembly on top of a suitable power source if the need for the wire feeder reel stand assembly to swivel is desired. Also has mounting holes in the base feet for mounting to any surface that it can be fastened to. Comes with a rotating tool tray to hold gun tips, guide tubes, drive rolls, etc. Will work in combination with the K1556-1 caster kit.

LN-742 & LN-742H

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Contents LN-742 & LN-742H Wire Feeders Safety California Proposition 65 WarningsElectric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Table of Contents Installation Technical Specifications LN-742Mounting Location Input Cable ConnectionsFigure A.2 Strain Relief Clamp PIN GUN and Cable Assemblies Table A.1 Work Lead SpecificationsWork Cable GUN Cable ConnectionsWater Connections For Water Cooled Guns Figure A.5 Water ConnectionsGmaw Shielding GAS Hookup Figure A.6 Shielding GAS HookupOperating Instructions Safety PrecautionsOperation General DescriptionControls and Settings Figure B.1 Wire Feeder ControlsChanging Drive Rolls for TWO- Roll Wire Feeders Acceleration SettingDrive Roll Installation English or Metric Speed Display UnitsGuide Tube Detail Changing Drive Rolls for FOUR- Roll Wire Feeders Figure B.3 Installing Drive Rolls on a FOUR-ROLL Feeder Idle Roll Pressure Setting Figure B.4 Idle Roll Pressure SettingWire Loading Figure B.5a Threaded Locking CollarElectrode Feeding and Brake Adjustment Innershield CoilsAdjustable Wire Reel Brake To Mount a 50 or 60 LB CoilREADI-REELS a K438 READI-REEL Adapter Must be Used Figure B.7 K1504-1 Coil ReelWire Reel Changing Making a WeldAccessories Table C.1 LN-742 AccessoriesGeneral K178-1 Mounting Platform K589-1 Remote Control KITK163 Undercarriage Solenoid KITPower Input Cables Welding GunsSPINDLES, STANDS, Adapters Attaching the Wire Reel Stand Drive Roll Kits Table C.2 Drive Roll KIT NumbersMaintenance Routine MaintenancePeriodic Maintenance Troubleshooting HOW to USE Troubleshooting GuideTroubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Diagrams LN-742 & LN-742H LN-742 & LN-742H LN-742 & LN-742H LN-742 & LN-742H Precaucion Warnung

LN-742, LN-742H specifications

The Lincoln LN-742H and LN-742 are renowned models in the realm of industrial welding equipment, specifically designed to cater to the needs of professional welders and fabricators. These machines stand out for their robustness, advanced technology, and ease of use, making them popular choices in various industries, including construction, automotive, and manufacturing.

One of the main features of the Lincoln LN-742H and LN-742 is their powerful Arc control capabilities. The machines are equipped with innovative technology that allows for consistent arc stability, which is crucial for achieving high-quality welds. The adjustable arc force enables users to tailor the welding parameters to their specific applications, facilitating optimal penetration and minimal spatter.

The LN-742H model is particularly notable for its enhanced portable design, making it easier for operators to transport the machine to different job sites. This portability does not compromise its power, as it offers a high output suitable for both thin and thicker materials. Moreover, the LN-742 model comes with a highly efficient cooling system that ensures the machine runs smoothly without overheating, even during prolonged use.

Both models feature an intuitive user interface that simplifies the welding process. The digital display offers real-time feedback on the welding parameters, allowing welders to make precise adjustments as needed. This feature is especially beneficial for beginners, who may be unfamiliar with optimal welding settings.

Another impressive characteristic of the Lincoln LN-742H and LN-742 machines is their versatility. They support various welding processes, including MIG, TIG, and stick welding, giving users the flexibility to choose the most suitable method for their projects. This adaptability makes these models an ideal solution for shops that handle a wide range of welding tasks.

Durability is a significant consideration in the design of the LN-742H and LN-742, as they are built with high-quality materials that withstand heavy use and challenging conditions. The rugged construction extends the lifespan of the machines, reducing the need for frequent repairs and servicing.

In summary, the Lincoln LN-742H and LN-742 welding machines exemplify advanced engineering and user-focused design. Their combination of powerful performance, portability, user-friendly features, and versatile applications makes them essential tools for professionals in the welding industry, paving the way for excellence in metal fabrication and repair.