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Fiber Laser Cutting Machines USA

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Category overview

About Fiber Laser Cutting Machines USA

Fiber laser cutting machines for U.S. metal shops.

Compare open table, enclosed, 5x10, 5x13, sheet-only, tube and sheet-tube fiber laser systems by material, maximum thickness, laser power, table size, shop power and production goal.

For a useful quote, UmproTech reviews more than the machine price: assist gas or compressed air, chiller, fume extraction, transformer or phase requirements, freight, unloading, startup, training, consumables and support path.

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Technical buying data

Fiber laser selection data

Published maximum cutting thickness for a fiber laser is not a single agreed number — four sources that all sell or specify these machines publish materially different figures at the same wattage, so the table below shows all four side by side rather than picking one.

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Published maximum fiber laser cutting thickness, by laser power and by source. Figures are each publisher's stated maximum, not a guaranteed production thickness. Sources disagree materially: at 6 kW, published mild-steel maximums range from 0.79 in (20 mm) to 1.18 in (30 mm) across four sources — a 50% spread at identical power. MachineMFG, SENFENG and KRRASS publish in millimetres; the inch figures shown for those rows are conversions. MachineMFG states its own chart is "for reference only."
Laser power Source Mild / carbon steel Stainless steel Aluminum Assist gas & notes
1 kW MachineMFG 0.24 in (6 mm) 0.12 in (3 mm) 0.08 in (2 mm) O2 on Q235A mild steel; N2 on 201 stainless and aluminum
1.5 kW MachineMFG 0.31 in (8 mm) 0.16 in (4 mm) 0.16 in (4 mm) O2 mild steel; N2 stainless and aluminum
Southern Fabricating Machinery Sales 1/4 in (6.35 mm) 16 GA 0.060 in (1.52 mm) 0.090 in (2.29 mm) US dealer figures, published in imperial
2 kW MachineMFG 0.39 in (10 mm) 0.20 in (5 mm) 0.20 in (5 mm) O2 mild steel; N2 stainless and aluminum
Southern Fabricating Machinery Sales 3/8 in (9.53 mm) 11 GA 0.120 in (3.04 mm) 5/32 in (3.97 mm) US dealer figures, published in imperial
3 kW MachineMFG 0.47 in (12 mm) 0.31 in (8 mm) 0.31 in (8 mm) O2 mild steel; N2 stainless and aluminum
Southern Fabricating Machinery Sales 1/2 in (12.7 mm) 1/4 in (6.35 mm) 3/16 in (4.76 mm) US dealer figures, published in imperial
SENFENG ≤ 0.79 in (≤ 20 mm) ≤ 0.47 in (≤ 12 mm) ≤ 0.24 in (≤ 6 mm) Manufacturer figures; highest published 3 kW mild-steel claim of the four
6 kW MachineMFG 0.79 in (20 mm) 0.55 in (14 mm) 0.63 in (16 mm) O2 mild steel; N2 stainless and aluminum. Lowest 6 kW mild-steel figure of the four.
Southern Fabricating Machinery Sales (stated as 6.0 kW and above) 1 in (25.4 mm) 5/8 in (15.88 mm) 1/2 in (12.7 mm) US dealer figures, published in imperial
SENFENG ≤ 1.18 in (≤ 30 mm) ≤ 0.79 in (≤ 20 mm) ≤ 0.47 in (≤ 12 mm) Highest 6 kW mild-steel figure of the four — 50% above MachineMFG
KRRASS 0.98 in (25 mm) 0.79 in (20 mm) 0.63 in (16 mm) Also publishes brass to 0.47 in (12 mm) at 6 kW
12 kW MachineMFG 0.87 in (22 mm) 0.79 in (20 mm) 0.98 in (25 mm) O2 mild steel; N2 stainless and aluminum
SENFENG ≤ 1.97 in (≤ 50 mm) ≤ 1.97 in (≤ 50 mm) ≤ 1.97 in (≤ 50 mm) More than double MachineMFG's 12 kW mild-steel figure

Why the numbers disagree. A "maximum thickness" figure depends on assist gas, gas purity and pressure, nozzle diameter, focus optics, cutting head, whether the figure means "will pierce and separate" or "will produce a saleable edge," and how conservative the publisher chooses to be. MachineMFG labels its own chart for reference only. SENFENG and KRRASS publish manufacturer maximums. Southern Fabricating publishes US dealer figures that sit consistently below the manufacturer claims at 3 kW and above. Treat the low end of each band as the production figure and the high end as a separation limit.

What to do with this: spec the machine against your thickest routine production part, not the published maximum. If your steady work is 1/2 in (12.7 mm) mild steel, every source above puts that at 3 kW or higher — but only one of the four puts it at 3 kW.
Use only the current cut chart for the exact machine, source, material and assist gas; no generic UmproTech thickness range is approved for product pages

Sources: MachineMFG, Laser Cutting Thickness & Speed Chart (source states "for reference only") · Southern Fabricating Machinery Sales, Factors To Consider When Buying A Fiber Laser Machine · SENFENG, 3kW, 6kW, 12kW Fiber Laser Cutter: Which Is Right For You · KRRASS, How Thick Can a 6000W Fiber Laser Cut. Figures are the publishers', not UmproTech's.

Electrical service is the single most common reason a fiber laser install slips: the machine lands before the panel is ready, so the figures below are the ones to hand your electrician before the machine ships — with a second published source alongside, because the two do not fully agree at 3 kW.

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Published electrical service requirements for fiber laser cutting machines, by laser power. These figures are machine-dependent. Actual phase, voltage, full-load amps and breaker size come from the nameplate and electrical schematic of the specific machine you are buying — not from a category chart. Chiller, dust collector, compressor and material handling draw additional service that is not included below. Use this to size the conversation with your electrician, then confirm against the machine's own documentation before any panel work is quoted.
Laser power Phase Service voltage Amps (Hytek Tools) Cross-check (Arcus) Notes
1,000 W (1 kW) Single phase 220 V 50 A — Only Hytek publishes single-phase at this power
1,500 W (1.5 kW) Single phase 220 V 60 A — Last single-phase step in Hytek's chart
2,000 W (2 kW) Three phase 220–600 V 50 A — Three-phase becomes the requirement at 2 kW
3,000 W (3 kW) Three phase 220–600 V 60 A ≈ 40–50 A @ 480 V Sources differ. Arcus states roughly 40–50 A at 480 V; Hytek states 60 A across a 220–600 V range. The two are consistent only if Hytek's 60 A is read at the bottom of its voltage range.
4,000 W (4 kW) Three phase 220–600 V 70 A — —
6,000 W (6 kW) Three phase 220–600 V 95 A — Common step where an existing shop panel runs out of headroom
12,000 W (12 kW) Three phase 480–600 V 120 A > 100 A Both sources agree this is a three-figure amperage service. Hytek narrows the voltage range to 480–600 V at 12 kW.
All powers Arcus adds three requirements that apply regardless of wattage: a dedicated breaker for the machine; a step-up transformer if the shop's incoming service is 208 V or 240 V rather than 480 V; and service sized to the machine's actual nameplate rather than to its laser source rating.

The 208 V / 240 V trap. Most US job shops are fed 208 V or 240 V three-phase. Several of the machines in this power class are specified for 480 V. Arcus states plainly that a step-up transformer is required in that case — that is a real line item, a real lead time and real panel space, and it is routinely left out of an install budget until the machine is on the truck.
The exact quotation and installation package must state input voltage, phase, frequency, full-load current, breaker recommendation and whether a transformer is included, separate or buyer-supplied

Sources: Hytek Tools, Fiber Laser FAQ (US dealer) · Arcus CNC, Laser Cutter Installation. Figures are the publishers', not UmproTech's, and are machine-dependent.

Common questions

How thick can a 6kW fiber laser cut?

Published maximums for 6 kW on mild steel run from about 3/4 inch (20 mm) to about 1-3/16 inch (30 mm) depending on who published them — MachineMFG puts it at roughly 20 mm, Southern Fabricating Machinery Sales and KRRASS at about 1 inch (25 mm), and SENFENG at roughly 30 mm. On stainless the same sources range from about 9/16 inch (14 mm) to 3/4 inch (20 mm), and on aluminum from about 1/2 inch (12 mm) to 5/8 inch (16 mm). The highest published mild-steel figure is 50 percent above the lowest for the same nominal wattage, because the sources are using different base materials, assist gases and definitions of an acceptable cut. Treat the low end of that spread as production capability and the high end as a maximum severing thickness.

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Will a 380V fiber laser run on US shop power?

Not without a transformer, and the frequency has to be checked as carefully as the voltage. 380V three-phase at 50 Hz is a Chinese distribution standard that does not exist in US buildings — US three-phase service is 208V, 240V or 480V at 60 Hz — so an imported machine published at 380V/50 Hz needs a transformer, plus written confirmation that its drives, chiller and controls are rated to run at 60 Hz. Arcus CNC publishes the mirror-image problem inside the US voltage set: a shop on 208V or 240V service needs a step-up transformer for a machine specified at 480V, and the machine has to have its own dedicated breaker with nothing else on the circuit. Ask for input voltage, phase, frequency and full-load amps off the machine's own datasheet rather than off a web listing, and have an electrician confirm available amperage at your panel before you commit — service upgrades are the most common surprise cost on a laser installation.

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What size air compressor do I need for a fiber laser?

Arcus CNC publishes a recommended free air delivery of 400–500 L/min (about 14–18 CFM) for 1–2 kW, 600–800 L/min (about 21–28 CFM) for 3–4 kW and 800–1,000 L/min (about 28–35 CFM) for 6 kW, with the compressor rated to 15–16 bar (roughly 220–230 psi) to absorb pressure drop through the lines. The same source specifies a 100–200 litre (26–53 gallon) receiver for a single 3–6 kW machine and a PSA desiccant dryer holding a −40 °C pressure dew point, noting that a refrigerant dryer only reaches +3 to +7 °C and is not adequate for laser cutting. The compressor must be oil-free — Arcus states standard workshop compressors are almost always oil-lubricated and will contaminate the optics. Budget another 10–15 percent of compressor output for the dryer's own regeneration.

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