Lincoln Electric SPIRIT II 275 Technical Manual page 106

Section 5: Torch Consumables and Cutting Charts
Oxygen Plasma / Air Shield / Air Preflow & Postflow
Shield Cap
BK277263
Outer Cap
BK284150
Imperial*
Material
Preflow
Thickness
(in) (psi)
1/2
5/8
3/4
1
1.25
20
1.50
1.75 **
2.00 **
2.25 **
2.50 **
Metric*
Material
Preflow
Thickness
(mm) (psi)
12
16
20
25
32
20
38
45 **
50 **
55 **
60 **
Marking* – For All Material Thicknesses
Type of Gas Preflow
(Plasma) (Shield) (psi)
Nitrogen Nitrogen N/A
Argon Air N/A
WARNING Do not connect H17 (combustible gas) to the gas inputs (Pre/Postflow, Plasma, or Shield) at the same time as
Oxygen or Air.
* Use an arc transfer height (ignition height) of .300" (7.6 mm) for cutting and .100" (2.5 mm) for marking.
** Edge start recommended.
(Revised 08/03/2017)
This information is subject to the controls of the Export Administration Regulations [EAR]. This information shall not be provided to
non-U.S. persons or transferred by any means to any location outside the United States contrary to the requirements of the EAR.
Mild Steel - 275 Amps - Silver Electrode
Nozzle
BK279469
Retaining Cap
BK277266
Plasma Shield Postflow
(psi) (psi) (psi)
81 70 79
Plasma Shield Postflow
(psi) (psi) (psi)
81 70 79
Plasma Shield Postflow
(psi) (psi) (psi)
25 25 N/A
50 25 N/A
5-44
Electrode
BK279450
(red o-ring)
Swirl Ring
BK279458
Arc Travel Cutting
Voltage Speed Height
(volts) (ipm) (in)
125 .140
139
105 .135
138 90 .120
144 65 .160
150 45 .175
163 25 .235
170 20 .290
180 15 .350
185 13 .375
190 9 .385
Arc Travel Cutting
Voltage Speed Height
(volts) (mm/m) (mm)
139 3290 3.6
2650 3.3
138
2190 3.1
143 1690 4.0
150 1120 4.4
162 645 5.9
170 495 7.5
178 395 8.7
183 345 9.2
187 285 9.6
Arc Travel
Voltage Speed
(volts) (ipm) (mm/min) (in)
108 250 6350 .100
54 100 2540 .120
Spirit II User's Manual
Torch Head
BK279060
Pierce Pierce Kerf
Height Time Width
(in) (msec) (in)
.300 500 0.119
.325 600 0.125
.350 800 0.132
.400 1000 0.146
.500 1500 0.161
.750 2500 0.176
0.192
.350
0.210
1500
.375 0.227
.385 0.246
Pierce Pierce Kerf
Height Time Width
(mm) (msec) (mm)
7.4 500 3.0
8.3 800 3.2
9.0 3.4
1000
10.1 3.7
12.8 1500 4.1
19.1 2500 4.5
4.9
8.9
5.3
1500
9.2 5.6
9.6 6.0
Marking Initial Pierce
Height Height Time
(mm) (in) (mm) (msec)
2.5 .100 2.5 0
3.0 .100 2.5 0