Lincoln Electric LN-7 GMA technical specifications Processes, Advantage Lincoln, Description

SEMIAUTOMATIC WIRE FEEDERS

LN-7 and LN-7 GMA

Semiautomatic, Constant Speed Wire Feeders

The LN-7 and LN-7 GMA are semiautomatic constant speed wire feeders that can be used with a variety of Lincoln engine drives, DC or CV power sources in a shop or field environment. Both models and a Ready-Pak™ package feature Lincoln's unique drive roll design, which provides positive feeding, quick reloading and durability for long life. Controlled wire feed speed during starting provides clean, positive starts and minimizes stubbing, skipping and spatter. For dependable operation and precise wire feeding in a rugged package, choose the LN-7 or LN-7 GMA.

Shown with options

Processes

MIG Flux-Cored Submerged Arc(1)

Advantage Lincoln

•The LN-7 feeds up to 3/32” (2.4mm) solid and 7/64” (2.8mm) flux-cored wires, from 50-500 inches per minute (1.3-12.7m/min) wire feed speed.

•The LN-7 GMA feeds up to 1/16” (1.6mm) solid and 5/64” (2.0mm) flux-cored wires, from 75-700 inches per minute (1.9-17.8 m/min) wire feed speed.

•Unique drive roll design provides positive feeding and quick reloading by simply starting wire into guide tube. The drive rolls and guide tubes are designed for long life and precise wire feeding.

•Four-roll wire drive system available for additional wire feed- ing force and easier feeding of soft wires (LN-7 GMA model only).

•Completely enclosed case protects the heavy duty wire drive mechanism from damage, but allows easy access to drive rolls.

•Control circuit features “cold electrode” when the gun trigger is released for an added measure of safety.

•Low voltage (24 volts) gun trigger circuit.

•Dynamic braking system stops wire feed motor quickly to minimize crater sticking problems.

•Three-year warranty on parts and labor.

Description

Output Input 115VAC

Required Options

Gun and Cable Assembly, Drive Roll Kit, Control Cable, Weld Power Cable

Recommended General Options

Universal Wire Reel Stand, Insulated Lift Bail, Caster Kit, Swivel Platform, Spindle Adapter, Readi-Reel Adapter, Coil Adapter, Plastic Wire Cover, Digital Voltmeter, Water Solenoid Kit, Gas Solenoid Assembly, Gas Guard Regulator, GMA Timer Kit, Burnback Kit, Magnetic Flux Screen Separator, Flux Screen, Continuous Flux Feeding Tank Assembly, Undercarriage, Remote Output Control Kit, Remote Control Adapter

Recommended Power Source Options

CV-250, CV-300, CV400-I, CV-400, CV500-I, CV-655, V350-PRO, DC-400, DC-600, DC-655, DC-1000

Order

K521 LN-7 Wire Feeder (2 Roll)

K440-2 LN-7 GMA (2 Roll) with gas solenoid valve

K567-2 LN-7 GMA (4 Roll) with gas solenoid valve K1801-1 LN-7 GMA (2 Roll) Ready-Pak™ Wire Feeder

TECHNICAL SPECIFICATIONS

Product	Product
Name	Number
LN-7	K521
(2 Roll)
LN-7 GMA	K440-2
(2 Roll)
LN-7 GMA	K567-2
(4 Roll)

(1) LN-7 model only.

Input

Power

115VAC 50/60 Hz

2.5Amps

Rated Output

Current / Duty Cycle

600 Amps @ 60%

Wire Feed	Wire Size		Dimensions	Net
Speed Range	Range		H x W x D	Weight
ipm (m/min)	in. (mm)		in. (mm)	lbs. (kg)
	Solid	Cored
50-500	.023-3/32	.045-7/64	10.9 x 9.8 x 9.6	24
(1.3-12.7)	(0.6-2.4)	(1.2-2.8)	(277 x 249 x 244)	(10.9)
75-700	.023-1/16	.045-5/64	10.9 x 9.8 x 9.6	26
(1.9-17.8)	(0.6-1.6)	(1.2-2.0)	(277 x 249 x 244)	(10.9)
75-700	.023-1/16	.045-5/64	11.1 x 11.6 x 9.7	32
(1.9-17.8)	(0.6-1.6)	(1.2-2.0)	(282 x 295 x 246)	(13.8)

Publication E8.10 11/03

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