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TECHNICAL SPECIFICATIONS

Oscillating

Maximum Dimensions

Oscillation

Net 

Product

Product

Input

Distance

Load

H x W x D  

Speed

Dwell

Weight

Name

Number

Power

in. (mm)

lbs. (kg)

in (mm)

IPM (m/s)

Time

lbs (kg)

Spreadarc™ Oscillator

K278-1

42VAC/1/50/60, 3A

0.25-4 (0-100)

65 (29.5)

13.7 x 17.8 x 12.6

10 -150

0.0 - 4.0

65

or

(348 x 450 x 320)

(0.25-3.8)

seconds

(29.5)

115VAC//1/50/60 1A

Input

42

VAC

The Spreadarc

is designed to oscillate an automatic

welding head for continuous welding at high duty cycles.

The Spreadarc

is compatible with the NA-3, NA-4, NA-5

and Power Feed

10A Lincoln

®

automatic welding heads 

and ideal for hardfacing applications.

The operator can set the oscillation travel speeds

and dwell times at either end of the stroke to provide
smoother bead edges through a digital control panel 
on the front of the machine. Additionally, the jog mode
allows the operator to position the welding nozzle in 
the correct starting location for a particular weld seam.

Processes

MIG, Flux-Cored, Submerged Arc, Hardfacing

Spreadarc

Oscillator

Automatic Welding Head Oscillator

Publication E9.50   09/06

www.lincolnelectric.com

AUTOMATIC WIRE FEEDERS

• Arc length remains constant during oscillation to provide a more 

uniform penetration.

• Dwell timers provide delay periods at the end-points of the stroke for 

smoother bead edges.

• The oscilation travel speed of the arc is uniform across the bead.

• Bright, digital displays and LEDs.

• Rugged 24VDC right angle gear motor.

• Heavy duty push buttons for everyday industrial use.

• Jog feature for positioning nozzle before welding procedure begins.

• Three-year warranty on parts and labor.

Advantage Lincoln

115

VAC

or

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