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