WaterJet Sweden WJS 4020

$320,000 - $480,000 Updated 2026-03-17

Key Specifications

Table Size

4,200 x 2,200 mm (nominal)

Accuracy

±0.05 mm

cutting area

4,000 x 2,000 mm (157.5" x 78.7")

pump pressure

Up to 4,000 bar (58,000 psi)

pump power

55 kW to 75 kW (direct-drive, single or dual pump)

cutting speed

Up to 12,000 mm/min (rapid); material-dependent cutting feed

Overview

The WaterJet Sweden WJS 4020 is a heavy-duty large-format CNC abrasive waterjet cutting system with a 4,000 mm x 2,000 mm cutting envelope, designed for industrial production environments where throughput, rigidity, and long-term reliability take priority. The WJS series represents WaterJet Sweden's workhorse platform for high-volume fabrication facilities, steel service centers, and manufacturers processing large plate materials daily in demanding production cycles.

The WJS 4020 is built around a massive welded steel bridge structure with robust cross-section members designed to resist flex and vibration even during aggressive cutting sequences. The overhead gantry travels on hardened and ground linear guide rails mounted to precision-machined surfaces, with dual servo drives on the X-axis providing synchronized motion control across the full 4,000 mm travel. The Y-axis travel of 2,000 mm covers the width of standard sheet product, ensuring that full sheets can be processed without repositioning. The cutting table incorporates a steel slat support system designed for easy replacement as slats wear from abrasive cutting.

WaterJet Sweden engineers the WJS 4020 for operation with high-power direct-drive pumps in the 55 kW to 75 kW range, supporting operating pressures up to 4,000 bar (58,000 psi). This pump capacity is well matched to multi-head cutting configurations, where two or more cutting heads can run simultaneously to reduce per-part cycle time on production sheet nesting. The pump and cutting head hydraulics are designed to maintain consistent pressure with minimal drop when multiple heads are active, a critical engineering consideration for part-to-part consistency.

The machine includes WaterJet Sweden's production-oriented CNC platform with advanced nesting and sheet management capabilities. The software suite supports automatic remnant tracking, which logs the usable area remaining on partially cut sheets and recalls those remnant outlines for future job scheduling — a feature that significantly reduces material waste in high-volume production shops. Integration with ERP and MES systems is available for facilities requiring production data connectivity.

The WJS 4020 is an appropriate choice for steel service centers, heavy fabrication contractors, shipbuilders, energy sector manufacturers, and defense contractors who cut large quantities of plate in a wide range of materials and thicknesses. Its heavy-duty construction philosophy prioritizes machine longevity and accuracy retention over multi-year production service life, reflecting WaterJet Sweden's approach to the industrial market: build for the rigors of continuous production rather than occasional or prototype use.

Full Specifications

Parameter	Value
Cutting Area	4,000 x 2,000 mm (157.5" x 78.7")
Pump Pressure	Up to 4,000 bar (58,000 psi)
Pump Power	55 kW to 75 kW (direct-drive, single or dual pump)
Cutting Speed	Up to 12,000 mm/min (rapid); material-dependent cutting feed
Positioning Accuracy	±0.05 mm
Max Material Thickness	Up to 250 mm (material-dependent)
Table Size	4,200 x 2,200 mm (nominal)
Water Flow Rate	~5.5 L/min at max pressure (per head)
CNC Control	WaterJet Sweden production CNC, nesting, remnant tracking, ERP integration option
Machine Weight	~14,000 kg
10 0 X 5 2	3.04 m x 1.57 m
13 4 X 6 8	4.06 m x 2.03 m
2 1 X 2 1	0.63 m x 0.63 m
2 2 X 2 2	0.66 m x 0.66 m
4 4 X 2 2	1.32 m x 0,66 m
4 7 X 4 7	1.39 m x 1.39 m
8 4 X 4 7	2.54 m x 1.39 m
20 0 X 10 0	6.09 m x 3.04 m
26 8 X 13 4	8.12 m x 4.06 m
5 2 X 5 2	1.57 m x 1.57 m
10 0 X 6 7	3.04 m x 2.00 m
13 10 X 6 7	4.21 m x 2.00 m
20 6 X 6 7	6.24 m x 2.00 m
27 2 X 6 7	8.28 m x 2.00 m
20 6 X 10 2	6.24 m x 3.09 m
2 7 X 5 0	.78 m x 1.52 m
10 0 X 5 0	3.04 m x 1.52 m
13 3 X 6 8	4.03 m x 2.03 m

Specifications sourced from omax.com — verified 2026-03-28

Strengths & Limitations

Strengths

Massive welded steel frame maintains accuracy under continuous high-volume production loads
High-power pump options support multi-head cutting to maximize throughput
Remnant sheet tracking software reduces material waste in production environments
Full 4x2 m sheet capacity handles largest standard plate sizes without repositioning
Engineered for long service life and accuracy retention over years of production use

Limitations

Very large footprint and substantial weight require significant floor loading capacity
High capital cost appropriate for high-volume production operations, not low-volume shops
Complex installation and commissioning requires careful facility planning and preparation

Best For

Steel service centers running high-volume plate cutting operations daily Heavy fabrication contractors and shipbuilders processing large structural plate Energy sector and defense manufacturers cutting thick-section specialty alloy plate Large job shops requiring maximum sheet utilization and multi-head cutting capability

Frequently Asked Questions

01 What is the cutting capacity of the WJS 4020 in thick steel?

The WJS 4020 can cut steel plate up to approximately 250 mm thick, though productive cutting speed decreases with increasing thickness. For structural steel in the 50-100 mm range, the machine delivers high-quality cut edges with minimal taper when taper compensation is active. Thicker sections are cut at reduced feed rates with careful abrasive dosing.

02 Can the WJS 4020 support multiple simultaneous cutting heads?

Yes. The WJS 4020 is designed for multi-head cutting configurations. Two or more cutting heads can be run simultaneously from a single pump of sufficient capacity or from dual pumps. Multi-head cutting is most productive when running multiple identical parts in parallel, and the nesting software supports multi-head part placement.

03 What is remnant sheet tracking and how does it benefit production shops?

Remnant tracking automatically records the unused area remaining on a sheet after a cutting job is complete. The software stores the remnant outline and makes it available for future job scheduling. When a new job comes in, the system can check whether any stored remnant sheet can accommodate the required parts, reducing the need to open new full sheets and minimizing material waste.

04 How does the WJS 4020 differ from the I-Cut 2040?

Both machines offer a 2 m x 4 m cutting envelope, but the WJS series is WaterJet Sweden's heavier-duty production platform, with a more massive structural frame, higher-power pump options, and production-oriented software features like remnant tracking and ERP integration. The I-Cut series is the standard production line, while the WJS targets the highest-throughput industrial environments.

05 What facility requirements does the WJS 4020 need?

The WJS 4020 weighs approximately 14,000 kg and requires a reinforced concrete floor rated for the machine's footprint loading. Adequate electrical supply for the 55-75 kW pump, compressed air for abrasive hopper pressurization, water supply and drainage for the cutting tank, and overhead crane access for installation are all facility requirements that should be evaluated before purchase.