General Description; Recommended Processes And Equipment - Lincoln Electric Magnum K115-1 Operator's Manual

INNERSHIELD PRO & MAGNUM CLASSIC GUN

general desCriPtion

WARNING
Do not touch electrically live parts such as
output terminals or internal wiring.
The K126 Innershield Pro gun and cable assemblies have been
designed specification for welding with mild steel FCAW-S (self-
shielded flux cored) processes. The K126 Pro product is designed
for extended life and improved wire feeding in heavy duty welding
applications.
The K126 Innershield Pro products use a cable with a core made
from flat wound spring steel. The copper conductors which
transmit welding current are wrapped around the spring core.
Four #20 insulated leads are wrapped along with the copper
conductors for use in the gun trigger circuit. The cable jacketing
is made from a cross linked polymer which provides exceptional
heat resistance and fatigue life.
A round wound spring steel liner is then placed inside the spring
core of the cable to contain the wire while it is being transported
to the welding arc. This liner is replaceable so that it can be sized
correctly for the welding wire being used, and it can be removed
and replaced with a new liner as it wears out. Both of these
features improve the feeding of the wire through the gun.
The K126 Innershield Pro has stainless steel jacketed goosenecks
for extended life. The goosenecks are similar in structure to a MIG
gun gooseneck. A copper tube is used for the conductor and a
stainless steel tube is used for the outer jacketing, while a Teflon
tube acts as an insulator between the copper and steel. The
replaceable spring liner extends through the gooseneck, so that
the wire is continuously supported throughout the gun.
The K126 Innershield Pro gun utilizes a replaceable connector
assembly at the feeder end of the gun so that the gun can be
easily used with any feeder. These connectors are the same
K466/K613 kits used with the Magnum MIG gun product line.

reCommended ProCesses and equiPment

RECOMMENDED PROCESSES
• FCAW-SS
PROCESS LIMITATIONS
• This gun can only be used with self-shielded wires. The design
will not support the use of shielding gas.
EQUIPMENT LIMITATIONS
• The K126 Pro will not operate with the LN23P feeder.
• The K126 Pro does not support the 83% reduced feed speed
switch for pipe welding.
A-3
INSTALLATION