ONA QS400

$200,000 - $300,000 Updated 2026-03-16

Key Specifications

X Travel

800 mm (31.5 in)

Y Travel

600 mm (23.6 in)

Z Travel

400 mm (15.7 in)

Accuracy

2 um

u axis

+/-90 mm (+/-3.54 in)

v axis

+/-90 mm (+/-3.54 in)

Overview

The ONA QS400 is a large-format wire EDM from ONA Electroerosion, distinguished by its exceptional 400 mm Z-axis travel — the defining specification that sets it apart from standard mid-range wire EDMs. Built for thick-section cutting applications including extrusion dies, deep mold plates, thick die castings, and aerospace structural component blanks, the QS400 combines generous Z-travel with a wide X/Y envelope and ONA's latest digital generator to cover demanding industrial applications that standard 300 mm Z machines cannot address.

The 400 mm Z-axis stroke allows the QS400 to cut workpieces up to 400 mm tall, which is essential for cutting extrusion dies (often 100-200 mm thick), deep progressive die sections, injection mold components with deep cores, and thick plate components used in aerospace and energy industry tooling. At maximum Z utilization with taper cutting, the U/V axes provide +/-90 mm of travel, enabling taper angles up to +/-30 degrees at full height — covering all practical die clearance and draft angle requirements.

The X/Y working envelope is 800 x 600 mm, and the machine table accommodates workpieces up to 1,250 x 950 mm in plan view. Maximum workpiece weight is 3,000 kg, reflecting the heavy die blocks and extrusion tooling that the machine is designed to handle. ONA's digital generator provides adaptive spark control optimized for the thick-section cutting conditions that are more demanding on wire stability than thin-section work — particularly important for maintaining cut straightness and consistent surface finish from top to bottom of tall workpieces.

Automatic wire threading uses ONA's high-pressure water-jet system with thread-through-the-kerf capability for reliable re-threading after wire breaks in tall workpieces. The dielectric tank has extended capacity for the tall workpiece configuration, with independent upper and lower flushing nozzles that adjust to workpiece height. The machine runs on ONA's CNC platform with a 21-inch touchscreen and supports CAM file import in standard CAD formats.

Full Specifications

Parameter	Value
X-Axis Travel	800 mm (31.5 in)
Y-Axis Travel	600 mm (23.6 in)
Z-Axis Travel	400 mm (15.7 in)
U Axis	+/-90 mm (+/-3.54 in)
V Axis	+/-90 mm (+/-3.54 in)
Max Taper Angle	+/-30 deg at 400 mm height
Max Workpiece Size	1,250 x 950 x 400 mm (49.2 x 37.4 x 15.7 in)
Max Workpiece Weight	3,000 kg (6,614 lb)
Wire Diameter Range	0.15 - 0.33 mm (0.006 - 0.013 in)
Surface Finish	Ra 0.15 um (6 uin) achievable
Positioning Accuracy	2 um
Max Cutting Speed	350 mm2/min (54 in2/hr)
Generator	ONA digital generator with adaptive spark control for thick-section cutting
CNC Control	ONA CNC, 21-inch touchscreen
Machine Weight	9,500 kg (20,944 lb)
Machine Dimensions	3,500 x 3,000 x 2,600 mm (138 x 118 x 102 in)

Strengths & Limitations

Strengths

400 mm Z-axis travel — the machine's defining advantage — enables cutting of thick extrusion dies, deep mold plates, and tall die castings that 300 mm Z machines cannot accommodate
3,000 kg workpiece capacity handles the heavy die blocks and extrusion tooling billets that accompany tall-section cutting work
800 x 600 mm X/Y envelope with 1,250 x 950 mm table coverage addresses large progressive die sections alongside tall components
+/-90 mm U/V axis at full 400 mm Z height maintains full taper capability even with tall workpieces mounted
ONA adaptive generator optimized for thick-section cutting conditions where wire stability is more demanding than in thin-section work
High-pressure water-jet threading with kerf re-thread capability ensures reliable automated operation in tall workpiece configurations

Limitations

Larger and heavier than most wire EDMs in the price range — requires substantial floor loading capacity and overhead clearance for installation
400 mm Z-travel is a specialized capability; shops that rarely cut parts over 250 mm tall are paying for capacity they may not use
ONA brand in North America has less market presence than Mitsubishi or Makino large-format wire EDMs
Service coverage for a large, specialized machine outside major manufacturing regions may involve longer response times
Wire consumption is higher in tall-section cutting due to longer wire path and increased demands on wire integrity

Best For

Extrusion die shops cutting aluminum, copper, and brass extrusion dies up to 200 mm thick with complex profiles Progressive die shops cutting tall die sections and heavy die blocks that exceed the capacity of 300 mm Z machines Injection mold makers producing deep-core mold components and large mold bases requiring full 400 mm Z clearance Aerospace and energy sector tooling shops cutting thick plate fixtures, jig components, and structural tooling Job shops investing in a single wire EDM that covers the widest possible range of workpiece heights without machine compromise

Frequently Asked Questions

01 What is the price of the ONA QS400?

The ONA QS400 typically prices between $200,000 and $300,000 new, depending on configuration and options. The large format and 400 mm Z-travel put it in a higher price tier than standard 300 mm Z wire EDMs.

02 Why does 400 mm Z-travel matter for wire EDM?

Z-travel determines the maximum height of workpiece the machine can cut. Many wire EDMs top out at 300 mm Z, which limits them to workpieces under that height. Extrusion dies, deep mold components, and heavy die blocks often exceed 300 mm, requiring a machine like the QS400 with full 400 mm Z capability.

03 Can the QS400 maintain taper cutting at full 400 mm workpiece height?

Yes. The U/V axes provide +/-90 mm of travel at full Z height, supporting taper angles up to +/-30 degrees even when cutting 400 mm tall workpieces. This is important for die clearance angles and draft cutting in extrusion tooling.

04 What wire sizes work best for thick-section cutting?

For thick-section cutting (over 200 mm height), 0.25 to 0.33 mm diameter brass wire is preferred for its higher tensile strength and current-carrying capacity compared to finer wires. Coated wires (zinc-coated or diffusion-annealed) further improve cutting speed and wire break resistance in tall workpieces.

05 How does the ONA QS400 compare to the ONA AV80?

The ONA AV80 has 800 x 600 x 500 mm travel with its 500 mm Z being its key advantage over the QS400's 400 mm Z. The QS400 is positioned for the 400 mm tall workpiece segment with optimization for extrusion dies and deep mold work, while the AV80 extends even further in Z for the tallest applications.