Miller Spectrum 625 X-TREME Air Plasma Cutter and Gouger, 40 A

A 40 A plasma cutter and gouger in a 21 lb case-carried package

The Miller Spectrum 625 X-TREME steps up from the 30 A class to a 40 A output at 140 VDC and 60% duty cycle. Miller rates a clean cut of 5/8 in. (16 mm) in mild steel, a maximum sever of 7/8 in. (22.2 mm), and adds gouging with dedicated consumables. With a 12 ft torch it weighs 21 lb (9.5 kg); with the 20 ft torch, 23 lb (10.5 kg). Typical uses are plant maintenance, light construction, shutdown repair, fabrication shops and body shops.

Auto-Line connects to 120-240 V single-phase, 60 Hz supply without internal changes. On 120 V input the output is automatically reduced to 27 A. Features printed by Miller include line voltage compensation for plus or minus 15 percent supply variation, Auto-Refire for expanded metal, automatic air regulation, auto postflow that sets the postflow time to protect consumable life, and automatic gouging-consumable detection that adjusts gas pressure without a manual regulator.

Technical specifications

Miller notes that cutting capacity on aluminum and other highly conductive metals may be reduced by as much as 30 percent.

Mild steel cut speeds and torch configuration

Recommended travel speeds, about 80 percent of maximum, at 40 A: 1/8 in. at 156 ipm, 1/4 in. at 64 ipm, 3/8 in. at 36 ipm, 1/2 in. at 22 ipm and 5/8 in. at 13 ipm. At 27 A on 120 V: 12 ga. at 115 ipm, 1/8 in. at 88 ipm, 3/16 in. at 50 ipm, 1/4 in. at 28 ipm, 3/8 in. at 15 ipm, 1/2 in. at 8 ipm and 5/8 in. at 5 ipm.

The XT40 torch cuts at either 30 A or 40 A by fitting the matching tip and drag shield. A deflector in place of the drag shield improves arc visibility with a 1/16 in. standoff, and for gouging the tip and drag shield are replaced by a gouge tip and gouge shield; the remaining consumables are common. The control panel has ranges marked for the 30 A tip on 120 V 15 A and 20 A supplies and for the 40 A tip on a 240 V 30 A or 50 A supply.

Ordering, accessories and what to confirm before ordering

Stock number 907579 is the Spectrum 625 X-TREME with a 12 ft XT40 torch and X-CASE; 907579001 has the 20 ft torch. The package includes a 12 ft power cord with an L6-30P twist-lock plug for the MVP adapters, adapters with 6-50P (240 V, 50 A) and 5-15P (120 V, 15 A) plugs, a 5-20P adapter (254331) as an option, a work clamp with flexible cable and a consumables box. Printed accessories include torches 260633 (12 ft) and 260635 (20 ft), consumable kit 253521, torch cable covers 239642 and 231867, work cable 263799 or 263800, X-CASE 300184, KVA adapter cord 300517 and the air filter kit 228926.

Confirm the supply (the sheet gives 60 Hz ratings only), the plug standard, the material and thickness, and the air quality available. A generator supply needs a 240 V receptacle of 4 kW or more. For heavier duty see the Miller Spectrum 875, or browse all Plasma Cutting Systems.

How the Miller Spectrum 625 X-TREME works

Compressed air flows through the torch. An electric arc heats the air into a plasma jet. The jet melts the metal and blows the molten metal out of the cut. Different consumables let the same unit gouge.

Where the Spectrum 625 X-TREME is used

• Plant maintenance
• Light construction
• Shutdown repair
• Fabrication shops
• Body shops

Selection checklist for the Spectrum 625 X-TREME

• Metal thickness
• Cut or gouge duty
• Supply voltage
• Air supply
• Torch cable length
• Duty cycle
• Consumables
• Portability

Installation, commissioning and maintenance notes for the Spectrum 625 X-TREME

Connect the unit to a 120 to 240 V single-phase supply. Connect a clean, dry air supply. Fit the right consumables for cutting or gouging. Check the air pressure before cutting. Inspect the torch consumables at regular intervals.

Requesting a quotation for the Miller Spectrum 625 X-TREME

Please send the metal thickness, the torch length and the supply. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

Spectrum 625 X-TREME process

It does air plasma cutting and gouging.

Spectrum 625 X-TREME output

The output is 40 A at 140 VDC.

Spectrum 625 X-TREME duty cycle

The duty cycle is 60 percent.

Spectrum 625 X-TREME clean cut

The rated clean cut is 5/8 in or 16 mm in mild steel.

Spectrum 625 X-TREME severance

The maximum sever is 7/8 in or 22.2 mm.

Spectrum 625 X-TREME piercing

The hand-held piercing limit is 5/16 in at 40 A.

Spectrum 625 X-TREME Auto-Line

Auto-Line accepts 120 to 240 V single-phase input.

Spectrum 625 X-TREME 120 V output

On 120 V input the output drops to 27 A.

Spectrum 625 X-TREME Auto-Refire

Auto-Refire helps when cutting expanded metal.

Spectrum 625 X-TREME air regulation

Air regulation is automatic.

Spectrum 625 X-TREME postflow

Auto postflow protects consumable life.

Spectrum 625 X-TREME gouging detection

It detects gouging consumables and adjusts the gas pressure.

Spectrum 625 X-TREME gas supply

It needs 6.0 scfm at a minimum of 90 psi.

Spectrum 625 X-TREME maximum air pressure

The maximum air pressure is 120 psi.

Spectrum 625 X-TREME torch

The torch is an XT40 hand-held model.

Spectrum 625 X-TREME torch connector

It has an Ultra-Quick Connect.

Spectrum 625 X-TREME torch cable

The cable is 12 ft or 20 ft long.

Spectrum 625 X-TREME size

The size is 9 x 5.5 x 13.25 in.

Spectrum 625 X-TREME weight

It weighs 21 lb with the 12 ft torch.

Cutter records for the Spectrum 625 X-TREME

Record the consumable changes and the service dates.

Choosing the right Spectrum 625 X-TREME torch

Choose the torch length from the work area.