Lincoln Electric LF-74 - Manual
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Table of Contents:
- Page 2 – A CLOSER LOOK; PERFORMANCE; LF-74 Four Roll Drive
- Page 3 – FEATURES; Gas Hose Connection Inlet.; Back View; Calibrated Wire Feed Speed Dial for precise setting.
- Page 4 – SYSTEM SELECTION; WIRE FEEDER SELECTION GUIDE; Recommended for; K2327-4 includes Drive Roll & Wire Guide Kit Only
- Page 5 – CONTROL EXTENSION CABLES; Wire Feeder Control Extension Cables; WELD POWER CABLE REQUIRED
- Page 6 – OPTIONS; GENERAL OPTIONS
- Page 8 – T H E L I N C O L N E L E C T R I C C O M PA N Y
TECHNICAL SPECIFICATIONS
Wire Feed
Wire Size
Dimensions
Net
Product
Product
Input
Output Capacity
Speed Range
Range
H x W x D
Weight
Name
(1)
Number
Power
Current / Duty Cycle
ipm (m/min)
in (mm)
in (mm)
lbs (kg)
LF-72 Base Model
K2327-1
24-42 VAC
500 Amps @ 60%
50-800
Solid
Cored
11.1 x 10.2 x 12.9
44
(with gun)
50/60 Hz
400 Amps@ 100%
(1.3-20.3)
.023-1/16
.030-5/64
(282 x 259 x 328)
(20)
9 Amps
(0.6-1.6)
(0.8-2.0)
LF-72 Base Model,
K2327-4
27
(no gun, no cable)
(12)
LF-72 Bench Model,
K2327-2
12.6 x 10.9 x 22.5
53
Standard Duty
(320 x 277x 572)
(24)
LF-72 Bench Model,
K2327-3
15.3 x 13.0 x 27.7
68
Heavy Duty
(389 x 330 x 704)
(31)
LF-74 Base Model
K2426-1
600 Amps @ 60%
100-800
.030-5/64
11.1 x 10.2 x 12.9
46
500 Amps@ 100%
(2.5-20.3)
(0.8-2.0)
(282 x 259 x 328)
(21)
LF-74 Bench Model,
K2426-2
15.3 x 13.0 x 27.7
71
Heavy Duty
(389 x 330 x 704)
(32)
LF-74 Bench Model,
K2426-3
50-400
.030-3/32
71
Heavy Duty, Extra Torque
(1.3-10.1)
(0.8-2.4)
(32)
Output
or
Input
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-72 and LF-74 Wire Feeders
2-Roll or 4-Roll Heavy Duty Industrial Feeders
Publication E8.11 8/06
LF-74 Bench Model, Heavy Duty, Extra Torque, K2426-3
LF-72 Bench Model, Standard Duty, K2327-2
(Shown with optional wire.)
24-42
VAC
60
50
Hz
SEMIAUTOMATIC WIRE FEEDERS
• 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.
Advantage Lincoln
•
See selection guide on page 4.
(1)
www.lincolnelectric.com
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Summary
LF-72/LF-74 Wire Feeders [2] A CLOSER LOOK www.lincolnelectric.com PERFORMANCE LF-74 Four Roll Drive A B C D E F G F A B Rigid Cast Aluminum Frame• Enhances precise drive roll alignment Brass to Brass InterchangeableGun Bushings• More reliable electrical conductivity – no oxide build-up • More effic...
LF-72/LF-74 Wire Feeders [3] A CLOSER LOOK www.lincolnelectric.com Heavy Duty hinged door opens upward to provide generous access to wire drive. Convenient storage tray on top forcontact tips and drive rolls. FEATURES Gas Hose Connection Inlet. Patented Ball Bearing Inlet Guide for accurate feeding....
LF-72/LF-74 Wire Feeders [4] SYSTEM SELECTION www.lincolnelectric.com LF-74 Bench Model, Heavy Duty, Extra Torque (K2426-3) Shown with optional 50-60 lb. (22.6-27.2 kg) coil adapter and wire. LF-72 Bench Model, Standard Duty (K2327-2) Shown with optional 10-44 lb. (4.5-19.9 kg) wire spool. LF-72 Ben...
