Lincoln Electric LF-72 Technical Specifications

LF-72 and LF-74 Wire Feeders
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
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.
Product
(1)
Name
LF-72 Base Model
(with gun)
LF-72 Base Model,
•
(no gun, no cable)
LF-72 Bench Model,
Standard Duty
LF-72 Bench Model,
Heavy Duty
LF-74 Base Model
LF-74 Bench Model,
Heavy Duty
LF-74 Bench Model,
Heavy Duty, Extra Torque
(1)
See selection guide on page 4.
LF-74 Bench Model, Heavy Duty, Extra Torque, K2426-3
LF-72 Bench Model, Standard Duty, K2327-2
TECHNICAL SPECIFICATIONS
Product Input Output Capacity
Number Power Current / Duty Cycle
K2327-1 24-42 VAC 500 Amps @ 60%
50/60 Hz 400 Amps@ 100%
9 Amps
K2327-4
K2327-2
K2327-3
K2426-1 600 Amps @ 60%
500 Amps@ 100%
K2426-2
K2426-3
(Shown with optional wire.)
• 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.
Wire Feed Wire Size
Speed Range Range
ipm (m/min) in (mm)
50-800 Solid
(1.3-20.3) .023-1/16
(0.6-1.6)
100-800
(2.5-20.3)
50-400
(1.3-10.1)
SEMIAUTOMATIC WIRE FEEDERS
Dimensions
H x W x D
in (mm)
Cored 11.1 x 10.2 x 12.9
.030-5/64 (282 x 259 x 328)
(0.8-2.0)
12.6 x 10.9 x 22.5
(320 x 277x 572)
15.3 x 13.0 x 27.7
(389 x 330 x 704)
.030-5/64 11.1 x 10.2 x 12.9
(0.8-2.0) (282 x 259 x 328)
15.3 x 13.0 x 27.7
(389 x 330 x 704)
.030-3/32
(0.8-2.4)
Publication E8.11 8/06
www.lincolnelectric.com
Output
or
Input
24-42
VAC
50
60
Hz
Net
Weight
lbs (kg)
44
(20)
27
(12)
53
(24)
68
(31)
46
(21)
71
(32)
71
(32)