Part#C35-CutChart
RASOR™ 90/120 SilverLine® OXYGEN CUTTING PARAMETERS Rasor 120 Torch K35-006 65-0442-006 O-Ring Kit K35-021 65-0434-021 Cooling Tube, 90/120 Amp (red band) C35-110 65-0442-009
To achieve maximum SilverLine® Electrode life: ▪ A fully used electrode will have a pit depth of .100 in. (2.5 mm). Standard electrodes only achieve a pit depth of .050 in. (1.3 mm). ▪ As the electrode wears, the torch will get closer to the plate. To compensate for this, increase arc voltage in 2-volt increments up to 10 volts higher than the initial setting. ▪ Make sure the torch is purged for at least 30 seconds after each parts change to remove all moisture. ▪ Leak check the torch after purging to make sure all o-ring and metal-to-metal seals are working as designed.
SilverLine® Electrode 90/120 Amp C35-1020 65-0442-001
To achieve maximum nozzle life: ▪ Use 90 amp shield and spacer ring for all cutting. This shield provides greater nozzle protection. ▪ Use at least 3 kg/cm2 (bar) assist gas on 1/4" plate and above. Increased assist gas flow helps to keep the nozzle clean and cool. ▪ Clean the shield and nozzle periodically to remove slag buildup and prevent double arcing. ▪ Use the lowest possible pilot arc setting to achieve arc transfer. Pilot current is adjustable with a toggle switch on the power supply or as a function in the Operator Control Unit (OCU).
Ceramic Guide (with O-Ring) C35-350 65-0434-020 Swirler, 90 Amp (CCW) C35-018 65-0434-018 Swirler, 120 Amp (CW) C35-003 65-0442-003 #8 Nozzle, 0.8 mm C35-160 65-0434-017 #11 Nozzle, 1.1mm C35-180 65-0434-007 #13 Nozzle, 1.3mm C35-002 65-0442-002
Recommended Parameters for Mild Steel Cutting With Oxygen.
Metal thickness
Plasma Pressure
Air Assist
Arc Current
Nozzle Size
Arc Voltage
Pierce Height
Cut Speed
In.
mm
Kg/cm2
Kg/cm2
A
mm
V
In.
in./min
0.062
1.5
6
0
37
0.8
115
.125
200
0.093
2.4
6
0
37
0.8
115
.125
150
0.125
3
6
2-2
45
0.8
120
.125
125
0.187
5
6
2-3
45
0.8
125
.125
80
1/4
6
6
3-4
90
1.1
132
.250
70
5/16
8
6
3-4
90
1.1
136
.250
60
3/8
10
6
4-5
90
1.1
138
.250
50
1/2
12
6
4-5
120
1.3
130
.300
60
5/8
16
6
5-6
120
1.3
130
.300
45
3/4
20
6
5-6
120
1.3
136
.350
35
Cap #1 C35-015
65-0434-015
Spacer Ring, 90 Amp C35-540 65-0434-022 Spacer Ring, 120 Amp C35-250 65-0442-004 Shield Cap, 90 Amp C35-019 65-0434-019 Shield Cap, 120 Amp C35-905 65-0442-005
Cap #2 K35-016
▪ Plasma and Assist pressures are adjusted at Plasma Unit. ▪ Cut speed is adjusted through Select Plate Menu function in the OCU. ▪ Arc voltage, cut height, and pierce height parameters are changed by pressing the 8 on the OCU keypad. ▪ Use feeds and speeds charts in operator’s manual for parameters not listed above.
Rasor® is a registered trademark of Komatsu®, Centricut is in no way affiliated with Komatsu®
1-800-752-7623 ■ 1-603-298-7849 ■ FAX 1-603-298-5938 ■ www.centricut.com Centricut, Two Technology Drive, West Lebanon, NH USA 03784
65-0434-016