Lincoln Electric SPIRIT II 275 Technical Manual page 78

Section 5: Torch Consumables and Cutting Charts
Oxygen Plasma / Oxygen or Air Shield / Air Preflow & Postflow
Shield Cap
BK277115
Outer Cap
BK284150
Imperial*
Material
Preflow
Thickness
(ga) (in) (psi)
12 .105
11 .120 25
10 .135
14 .075
12 .105
.125
25
10 .135
3/16
1/4
Metric*
Material
Preflow
Thickness
(mm) (psi)
2.5
25
3
2.5
3
25
5
6
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 .135" (3.4 mm) for cutting and .100" (2.5 mm) for marking.
(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 - 50 Amps - Copper Electrode
Nozzle
BK277122
Retaining Cap
BK277153
Plasma Shield Postflow
(psi) (psi)
Cold-Rolled Steel – Oxygen Shield – Swirl Ring BK277140
74 12
Hot-Rolled Steel – Air Shield – Swirl Ring BK277142
74 19
Plasma Shield Postflow
(psi) (psi)
Cold-Rolled Steel – Oxygen Shield – Swirl Ring BK277140
74 12
Hot-Rolled Steel – Air Shield – Swirl Ring BK277142
74 19
Plasma Shield Postflow
(psi) (psi)
25 25
50 25
Swirl Ring
BK277140/BK277142
Arc Travel
Voltage Speed
(psi) (volts) (ipm)
123 70
72 126 60
128 50
200
106 190
180
72
110 170
113 105
117 75
Arc Travel
Voltage Speed
(psi) (volts) (mm/m)
121 1895
72
125 1555
4885
106
4660
72
113 2555
116 2075
Arc Travel
Voltage Speed
(psi) (volts) (ipm) (mm/min)
N/A 145 250
N/A 71 100
5-16
Spirit II User's Manual
Electrode
BK277131
Torch Head
BK279100
Cutting Pierce Pierce
Height Height Time
(in) (in) (msec)
.120 100
.125 .135
200
.135
100
.100
.135
200
.110
.200 300
.140
.225 400
Cutting Pierce Pierce
Height Height Time
(mm) (mm) (msec)
2.9 100
3.4
3.1 200
100
2.5 3.4
200
5.1
3.6 400
5.5
Marking Initial
Height Height
(in) (mm) (in) (mm) (msec)
6350 .147 3.7 .100 2.5
2540 .100 2.5 .100 2.5
Kerf
Width
(in)
.075
.078
.050
.053
.060
Kerf
Width
(mm)
1.9
1.3
1.4
1.5
Pierce
Time
0
0