HSG G4020V 30 kW Laser for Large-Format Sheet Cutting

The HSG G4020V 6G 30 kW with STORE 4020 6 is a practical candidate for fabricators with recurring large-format carbon-steel, stainless-steel, aluminum, or similar flat-sheet work. The package combines a 4064 × 2040 mm cutting format, a 30 kW fiber source, 6G motion, dual-pallet handling, and six-shelf material-tower automation. Its value is greatest when the shop can keep the bed supplied with suitable material and turn faster cutting into finished parts without creating a gas, facility, sorting, bending, welding, inspection, or shipping bottleneck. It is not automatically the right replacement for plasma, oxy-fuel, waterjet, or another laser because the useful process window still depends on material, thickness, assist gas, edge-quality target, nesting, and downstream flow. Exact package specifications Commercial configuration details

As of August 31, 2026, the exact Mac-Tech package is marked New – In Stock. That status supports a current purchasing conversation, but it does not replace application testing, utility planning, or final configuration confirmation. Current equipment listing

Large format is the first fit question

The G4020V provides approximately 160 × 80.3 inches of cutting area, with 80.3 inches of X-axis travel, 160 inches of Y-axis travel, and 5.9 inches of Z-axis travel. The machine is also listed with an 11,023-pound maximum loading weight and overall dimensions of approximately 488.2 × 174.4 × 112.8 inches. That format can keep large blanks, long contours, and high-part-count nests on one sheet instead of splitting work across smaller machines or secondary operations when the parts use the available area efficiently. Mac-Tech machine specifications

The configured package includes a 30 kW Raycus source, HSG/Bochu cutting-head identification, an HSG machine bed, AlphaT Plus control identification, dual-pallet handling, and STORE 4020 six-shelf tower automation. The GV family publishes 300 m/min maximum linkage speed and 6G maximum linkage acceleration. Those are motion-system limits, not production cutting rates. Exact listed configuration HSG GV technical specifications HSG GV brochure

This makes the machine a candidate for OEM blanks, construction-equipment components, agricultural-equipment parts, structural components, and other large or medium-thick work that is currently split, subcontracted, or routed through slower thermal-cutting processes. The bed only creates value when the cut list uses it often enough to justify the machine footprint. If most jobs are small blanks that nest efficiently on a smaller laser, the G4020V may add capacity in the wrong place.

Power changes the process window

Independent ultrahigh-power testing found that cutting speed increased with power across carbon steel, stainless steel, and aluminum. In the reported test setup, a 30 kW laser cut a typical 16 mm stainless-steel part in half the cycle time of a 15 kW laser, and the study reported that 30 kW continuous-wave air cutting produced dross-free results on 30 mm carbon steel in its tested process window. The equipment used in those tests was not this Raycus/HSG/Bochu configuration, so the results provide process context rather than a guaranteed HSG cut chart. Independent ultrahigh-power cutting results

Assist gas determines whether that power becomes useful production capacity. Carbon steel may be evaluated with oxygen, nitrogen, or compressed air, while the best choice depends on thickness, grade, edge appearance, dross limits, piercing behavior, gas cost, and available pressure and flow. The independent study found that air cutting can scale better with power than oxygen in certain medium-thick carbon-steel conditions, but that result is a process reference, not a universal recipe for every material or finish requirement. Assist-gas and process-window data

The application review should use the buyer’s actual grades, thicknesses, surface conditions, hole sizes, lead-ins, edge-quality limits, and intended gas strategy. The cutting demonstration should measure complete nests rather than quote the 300 m/min linkage figure. Piercing, acceleration, lead-ins, repositioning, pallet exchange, unloading, skeleton removal, and part separation all affect the result.

Tower automation changes the material plan

Dual pallets and the STORE 4020 tower can support planned staging of multiple materials or scheduled jobs while reducing the need to load every sheet individually. The GV platform also presents automated loading and unloading, visual edge finding, visual residual-material functions, automatic nozzle replacement, and zoned dust removal as available functions. These features can be valuable for recurring work and remnant utilization, but the final quotation should identify which functions are included, which are optional, and which are demonstrated on the configured machine. HSG GV platform functions HSG GV brochure

The tower figures create an important buying boundary. The commercial configuration listing reports six material-tower layers, a 157.5 × 78.7-inch applicable sheet format, 6,614 pounds per layer, a 31.5 × 31.5-inch minimum processing sheet size, a maximum processing sheet weight of 2,646 pounds, stainless-steel thicknesses of 0.039 to 0.47 inch, and carbon-steel thicknesses of 0.039 to 0.79 inch. These are separate metrics from the machine’s listed 11,023-pound maximum loading weight. The buyer should not apply the machine rating to tower-fed processing or assume that every sheet within the bed envelope can be stored and retrieved automatically. The tower figures should be confirmed against the final quotation, tower documentation, and machine serial configuration. Listed machine loading specification

Residual-sheet handling is another practical discriminator. Visual edge finding and residual-material functions can help recover usable remnants, but the shop still needs a material-identification method, a nesting rule, and a safe storage plan. Automation improves the material path only when inventory, remnants, job priority, and retrieval logic are organized around the real production schedule.

Facility capacity sets the purchase boundary

The listed machine dimensions describe the primary machine envelope. The facility plan must add tower clearances, pallet-exchange space, material aisles, service access, crane or forklift approach, dust extraction, chiller placement, transformer and voltage-stabilizer space, gas connections, and operator movement. The package is listed with a water chiller, dust collector, transformer and voltage stabilizer, OD6 laser-protection glass, safety light curtains, camera, nesting software, and an AC room for the laser. Those inclusions create a starting point for engineering; they do not complete the plant layout. Package and facility-related specifications

The exact machine listing specifies 380 V and 60 Hz, while the commercial configuration listing reports a supplied 480 V-to-380 V transformer and 50/60 Hz tower data. The plant must verify incoming service, transformer sizing, disconnects, grounding, available fault current, cooling conditions, installation responsibilities, and final electrical documentation before the order is released. The same review should confirm compressed-air or nitrogen-generation capacity and the pressure and flow required by the selected cutting recipes. Machine electrical and accessory specifications

Laser cutting also requires a deliberate safety and industrial-hygiene plan. OSHA technical guidance addresses adequate ventilation for fumes and vapors from laser cutting and identifies protective housing, interlocks, controlled access, and controlled service practices as important safeguards. OSHA’s standards page identifies ANSI Z136.9 and ANSI B11.21 as voluntary consensus references for laser safety and laser-processing machine tools, not as OSHA regulations. The enclosure, protection glass, light curtains, dust collection, emergency stops, lockout procedures, and service responsibilities should be reviewed together against the final safeguarding design. OSHA Technical Manual: Laser Hazards OSHA Laser Hazards standards guidance

Prove the cell on representative work

The most useful application review starts with representative CAD files and nests: the largest blank, the smallest economical job, the highest-part-count nest, difficult contours, small holes, long cuts, and representative residual sheets. Pair those files with material grades, thicknesses, surface condition, edge-quality targets, current cycle times, subcontracting costs, monthly sheet consumption, planned tower inventory, and the work currently routed to laser, plasma, oxy-fuel, or waterjet.

Do not treat the 30 kW label as a universal thickness guarantee. The HSG brochure qualifies its technical parameters and test results as in-house laboratory information and states that actual-machine results prevail. The independent 30 kW process data also used different laser-source and cutting-head equipment. Sample cuts should therefore establish the buyer’s actual speed, edge quality, dross, piercing behavior, gas consumption, nozzle changes, and recovery procedures before the machine is approved for production. HSG test-result qualification Independent test setup and results

The final quotation should also make the control and data path explicit. The current materials use both HSG-X Bus Control System and AlphaT Plus terminology, so the buyer should confirm the installed CNC, nesting software, postprocessor, file formats, network and ERP/MES interfaces, barcode or data-transfer requirements, remote-support method, and ownership of program revisions. Mac-Tech control references

Finally, measure what happens after the cut. Sorting, skeleton removal, deburring, bending, welding, inspection, and shipping must absorb the output that the laser creates. Six-shelf automation can improve machine utilization, but it cannot by itself guarantee finished-part throughput. The useful comparison is cut-to-sort, cut-to-bend, or cut-to-ship performance rather than laser-on time alone.

I’m John Perry, Regional Sales Executive for Wisconsin at Mac-Tech. I can help assess fiber-laser applications, cut quality, nesting, controls, sorting, and the cut-to-bend relationship. Bring representative CAD files and nests, material grades and thicknesses, edge-quality targets, gas and utility information, a scaled facility layout, and the sorting, bending, welding, inspection, or shipping constraints that follow cutting; I can help assess whether the HSG G4020V package matches the work, material flow, and facility before the final configuration is set. John Perry’s Mac-Tech profile