Specifications
CutMaster a120
OPERATION 4T-34  Manual 0-4989
Stainless Steel 
120A 
Air Plasma / Air Shield
Deîector
Standard Shield Cup 
Maximum Life Shield Cup
Tip
Starter Cartridge
Heavy Duty Starter 
Cartridge
Electrode
9-8243
9-8218 
9-8237
9-8233
9-8213
9-8277
9-8232
Material 
Thickness
Gas Pressure 
(Air)
Arc Voltage
Torch 
Working 
Height
Travel Speed
Initial 
Piercing 
Height
Pierce Delay
Kerf Width 
@ Rec. 
Speed
(GA)
(in) inch
PSI 
(torch lead 
length)
Volts
(in)
(ipm) (in) (sec) (in)
1/4 0.250
80 (25') 
80 (50')
133 0.19 180 0.25
0.20
0.10
3/8 0.375
136 0.19 100 0.25
0.40
0.11
1/2 0.500
140 0.19 60 0.25
0.80
0.11
5/8 0.625
152 0.25 40 0.30
1.20
0.13
3/4 0.750
154 0.25 26 Edge Start 0.14
1 1.000
159 0.25 16 Edge Start 0.14
1-1/4 1.250
167 0.25 8 Edge Start
0.14
Material 
Thickness
Gas Pressure 
(Air)
Arc Voltage
Torch 
Working 
Height
Travel Speed
Initial 
Piercing 
Height
Pierce Delay
Kerf Width 
@ Rec. 
Speed
(mm)
 Bar 
(torch lead 
length)
Volts (mm) (mm/min) (mm) (sec) (mm)
6
5.5 (7.6m) 
5.5 (15.2m)
133
4.8
4800 6.4 0.2 2.6
8 135 4.8 3520 6.4 0.2 2.7
10 137
4.8
2390
6.4
0.5 2.8
12 139 4.8 1750 6.4 0.8 2.9
15 149
6.4
1160
7.6 1.2
3.4
20 155
6.4
625
Edge Start
3.6
25 159
6.4
425
Edge Start
3.6
30 165
6.4
260
Edge Start
3.6
BOLD TYPE indicates maximum piercing parameters. BOLD ITALIC indicates edge starts only.










