Lincoln Electric 10474, 10473, 10476, 10475 manual Cutting Capability, Consumable Life

B-3 OPERATION B-3

CUTTING CAPABILITY

The PRO-CUT 55 is rated at 55 amps, at 50% duty cycle on a 10 minute basis or 40 amps, at 100% duty cycle. If the duty cycle is exceeded, a thermal protector will shut off the output of the machine until it cools to the normal operating temperature.

Figure B.1 shows the cut capacity of the Pro-Cut 55 when cutting mild steel. The graph plots cut thickness vs. torch travel speed with a torch standoff of 0.15". Example: 0.25” material may be cut at a setting of 35 amps at an approximate speed of 38 IPM or at a setting of 45 amps at an approximate speed of 57 IPM or at a setting of 55 amps at an approximate speed of 62 IPM.

Recommended Torch Travel Speed (IPM)

	100
Speed	80
	60
Maximum
	40
80% of	20
	0
	0.000

Lincoln's PRO-CUT 55

Mild Steel Cut Capacity Chart

		25 A			35 A		45 A		55 A
0.125	0.250		0.375	0.500		0.625		0.750

Material Thickness

Figure B.1

CONSUMABLE LIFE

The expected life for the Pro-Cut 55's electrode under normal operating conditions is approximately 320 starts/cuts. An erosion of .060" is typical for end of electrode life, however, the electrode life may last longer. A green and erratic arc will indicate definite electrode failure and the electrode should be replaced immediately.

It is recommended that consumables be replaced in complete sets. (Example: Electrode and Nozzle). This will maximize the performance of the PRO-CUT system.

PRO-CUT 55