Lincoln Electric technical specifications LF-72 and LF-74 Wire Feeders

SEMIAUTOMATIC WIRE FEEDERS

LF-72 and LF-74 Wire Feeders

Output

2-Roll or 4-Roll Heavy Duty Industrial Feeders

Designed for MIG and cored wire welding in job shop and manufacturing environments, the rugged LF-72 and LF-74 wire feeders are built to deliver reliable performance day after day. The heart of these feeders

is the highly engineered 2-roll or 4-roll MAXTRAC™ wire drive system, delivering strong and consistent feeding force for tough applications.

Select the 2-roll LF-72 for most .035-.045 wire applications. Select the 4-roll LF-74 for large diameter wires, longer gun cables or long boom conduit or hard automation applications.

Processes

MIG, Pulsed, Flux-Cored

LF-74 Bench Model, Heavy Duty, Extra Torque, K2426-3

LF-72 Bench Model, Standard Duty, K2327-2

(Shown with optional wire.)

or

Input

24-42

VAC

50

60

Hz

Advantage Lincoln

•Patented MAXTRAC™ heavy-duty cast aluminum wire drive system provides reliable feeding and durability.

•Brass-to-brass gun connections for better electrical conductivity that results in better arc performance.

•Totally tool-less drive rolls and wire guide installation. Two or four gear-driven wire drive rolls slide on and off easily!

•Calibrated wire feed speed dial for precise and accurate settings.

•Rugged, industrial-grade wire feeder motor.

•In addition to great mild steel performance, these feeders deliver positive arc starting and feeding with stainless steel, aluminum and flux-cored wires!

•Control cable connector with a Spin-Nut™ makes connecting the control cable a simple twist-of-the-wrist.

•Totally enclosed wire drive.

•Manufactured under a quality system certified ISO 9001 requirements and ISO 14001 environmental standards.

•Three-year warranty on parts and labor.

TECHNICAL SPECIFICATIONS

	Product	Product
	Name(1)	Number
	LF-72 Base Model	K2327-1
	(with gun)
•	LF-72 Base Model,	K2327-4
	(no gun, no cable)
	LF-72 Bench Model,	K2327-2
	Standard Duty
	LF-72 Bench Model,	K2327-3
	Heavy Duty
	LF-74 Base Model	K2426-1
	LF-74 Bench Model,	K2426-2
	Heavy Duty
	LF-74 Bench Model,	K2426-3
	Heavy Duty, Extra Torque

(1) See selection guide on page 4.

Input

Power

24-42 VAC

50/60 Hz

9 Amps

	Wire Feed
Output Capacity	Speed Range
Current / Duty Cycle	ipm (m/min)
500 Amps @ 60%	50-800
400 Amps@ 100%	(1.3-20.3)

600 Amps @ 60%	100-800
500 Amps@ 100%	(2.5-20.3)
	50-400
	(1.3-10.1)

Wire Size		Dimensions	Net
Range		H x W x D	Weight
in (mm)		in (mm)	lbs (kg)
		11.1 x 10.2 x 12.9	44
Solid	Cored
.023-1/16	.030-5/64	(282 x 259 x 328)	(20)
(0.6-1.6)	(0.8-2.0)
			27
			(12)
		12.6 x 10.9 x 22.5	53
		(320 x 277x 572)	(24)
		15.3 x 13.0 x 27.7	68
		(389 x 330 x 704)	(31)
	.030-5/64	11.1 x 10.2 x 12.9	46
	(0.8-2.0)	(282 x 259 x 328)	(21)
		15.3 x 13.0 x 27.7	71
		(389 x 330 x 704)	(32)
	.030-3/32		71
	(0.8-2.4)		(32)

Publication E8.11 8/06

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