Mitsubishi EA12V

$100,000 - $160,000 Updated 2026-03-11

Key Specifications

X Travel

400 mm (15.7 in)

Y Travel

300 mm (11.8 in)

Z Travel

300 mm (11.8 in)

work table size

700 x 600 mm (27.6 x 23.6 in)

work tank dimensions

850 x 600 x 350 mm (33.5 x 23.6 x 13.8 in)

max workpiece weight

700kg

Overview

The Mitsubishi EA12V is a mid-range sinker EDM designed for mold shops, die makers, and precision component manufacturers who need solid performance across a wide range of burning applications without paying for features they don't use. With 400 x 300 x 300 mm (15.7 x 11.8 x 11.8 inch) X/Y/Z travel, a 700 x 600 mm (27.6 x 23.6 inch) work table, and 700 kg (1,540 lb) workpiece capacity, the EA12V is sized for the core of most sinker EDM work — mold cavities, core pins, die inserts, and complex 3D contours in hardened tool steel and carbide.

The FP80V power supply is the heart of the EA12V's performance. Combined with the Fine Pulse 2 (FP2) function, it delivers precise energy control that enables fine surface finishes while the pumping action of the FP2 mode keeps the spark gap clean without aggressive external flushing. The digital AC Smart Servo System provides 0.05 um (2 millionths of an inch) resolution, which translates to excellent positioning repeatability and consistent burn quality across the entire work envelope.

Mitsubishi's saddle-less column design is a notable engineering choice. Instead of conventional saddle ways, the EA12V uses a combined linear motion way system that reduces the number of moving components and mechanical joints. The result is a more rigid structure with better thermal stability, and the space-saving design reduces the machine's footprint by nearly 20% compared to conventional sinker EDMs with similar travel — a real advantage in shops where floor space is premium.

The M700 CNC control is a PC-based platform with touchscreen operation, 10 MB program storage, and Ethernet/DNC/FTP connectivity. The C-axis (electrode rotation) is available with 3R Macro compatibility as standard, which streamlines electrode management for shops using standardized tooling systems. The chuck-to-table clearance adjusts from 200 to 500 mm (7.9 to 19.67 inches), accommodating a wide range of electrode and workpiece heights.

The work tank inner dimensions of 850 x 600 x 350 mm (33.5 x 23.6 x 13.8 inches) provide ample room for fixturing, and the electric chiller maintains dielectric temperature stability during extended burns. An optional automatic tool changer enables unattended multi-electrode burning for complex mold cavities.

Pricing for a new Mitsubishi EA12V typically falls in the $100,000-$160,000 range depending on configuration and ATC option. Used machines from 2012-2018 trade between $35,000 and $80,000. The EA12V competes with the Sodick AG40L, Makino EDAF3, and GF AgieCharmilles FORM E 350 in the mid-range sinker EDM segment.

Full Specifications

Parameter	Value
X-Axis Travel	400 mm (15.7 in)
Y-Axis Travel	300 mm (11.8 in)
Z-Axis Travel	300 mm (11.8 in)
Work Table Size	700 x 600 mm (27.6 x 23.6 in)
Work Tank Dimensions	850 x 600 x 350 mm (33.5 x 23.6 x 13.8 in)
Max Workpiece Weight	700kg
Chuck To Table Clearance	200 - 500 mm (7.9 - 19.67 in)
Servo Resolution	0.05 um (0.000002 in)
C Axis	Standard (3R Macro compatible)
Generator	FP80V with Fine Pulse 2 (FP2)
CNC Control	M700 CNC (PC-based, touchscreen)
Program Storage	10 MB on hard drive
Connectivity	Ethernet / DNC / FTP
Chiller	Electric chiller (standard)
Machine Weight	3,856 kg (8,500 lb)
Column Design	Saddle-less combined linear motion way system
Machine Travels X X Y X Z	400 x 300 x 300mm
Maximum Workpiece Size W X D X H	800 x 550 x 250mm
Max Dielectric Fluid Level	300mm
Power Supply Peak Current	FP80V (80 Peak) FP120V (120Peak)
Internal Worktank Dimensions W X D X H	850 x 600 x 350mm
Worktank Door Type	3-Sided Drop Ttank
Table Dimensions W X D	600 x 450mm
Max Electrode Weight	50kg
Table To C Axis Chuck Distance Min Max	135 ~ 435mm 3R-MACRO Chuck
Minimum Command Unit Resolution	0.0001 / 0.00005mm
Rapid Travel Speed	2000mm/min
High Speed Jump Maximum	10m/min
Machine System Dimensions W X D	1750 x 2050mm
Machine System Weight	3725kg
Manufacturer	Mitsubishi
Model	EA12
Power Requirement	20,022,000 kW

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

Strengths & Limitations

Strengths

MC Machinery's North American service network is the strongest among sinker EDM brands — faster field service response and better applications support than most competitors
FP80V power supply with Fine Pulse 2 technology delivers fine surface finishes with self-cleaning spark gap action, reducing flushing setup requirements
Saddle-less column design saves nearly 20% floor space compared to conventional sinker EDMs — a significant advantage in space-constrained shops
0.05 um servo resolution provides excellent positioning repeatability and consistent burn quality across the entire work envelope
700 kg workpiece capacity and 700 x 600 mm table handle medium to large mold inserts and die components without needing a larger-platform machine
Standard C-axis with 3R Macro compatibility streamlines electrode management for shops using standardized tooling systems

Limitations

M700 control is the previous generation — newer Mitsubishi sinker EDMs use the M800 with improved interface and connectivity features
No linear motor drives — the conventional way system requires periodic maintenance and accuracy checks that linear motor machines avoid
Standard configuration lacks automatic tool changer — the ATC option adds significant cost but is practically essential for unattended multi-electrode burning
The EA12V has been succeeded by the SG12 and EA-S series in Mitsubishi's current lineup, which may affect long-term parts availability and technology updates

Best For

Mold shops burning cavities, core pins, and rib details in hardened tool steel where MC Machinery's service network and application support provide competitive advantage Die makers needing a reliable mid-range sinker EDM with enough table space and workpiece capacity for typical die inserts and components Shops with limited floor space where the saddle-less design's 20% footprint reduction makes the difference between fitting the machine and not Operations using 3R or System 3R electrode management systems where the standard C-axis compatibility streamlines setup and electrode referencing Job shops and contract manufacturers burning a variety of mold and die components where the FP80V generator handles diverse materials and geometries effectively

Frequently Asked Questions

01 How does the Mitsubishi EA12V compare to the Sodick AG40L?

The AG40L uses linear motor drives with 1.2G acceleration for no-flush EDM capability and comes with a 10-year accuracy guarantee. The EA12V counters with Mitsubishi's FP80V generator, Fine Pulse 2 technology, and MC Machinery's superior service network. The AG40L is the better choice for shops that value speed and long-term accuracy retention; the EA12V is stronger for shops that prioritize service availability and fine-finish capability with the FP2 system.

02 Does the EA12V have an automatic tool changer?

Not as standard — the ATC is an optional accessory. For mold work requiring multiple roughing, semi-finishing, and finishing electrodes per cavity, the ATC is practically essential for unattended operation. Budget for the ATC when quoting the machine if you plan to run lights-out or need multi-electrode burning capability.

03 What does a used Mitsubishi EA12V cost?

Used EA12V machines from 2012-2018 typically trade between $35,000 and $80,000 depending on hours, condition, ATC option, and included tooling. Machines with the ATC and low hours command the higher end. The EA12V is well-represented on the used market, and MC Machinery continues to support these machines with parts and service. Verify the FP80V generator function and dielectric system condition when evaluating used units.

04 What electrode materials work best with the EA12V?

The EA12V works well with both graphite and copper electrodes. Graphite is the standard choice for most mold and die work — it's faster to machine, lighter, and the FP80V generator optimizes parameters for graphite automatically. Copper electrodes produce finer surface finishes and are preferred for applications requiring mirror-quality surfaces. The FP2 function helps maintain finish quality with both electrode materials by keeping the spark gap clean during burning.

05 Is the EA12V still a current model?

The EA12V has been largely superseded by Mitsubishi's SG12 and newer EA-S Advance series in current production. However, the EA12V remains well-supported by MC Machinery for parts and service, and used machines are widely available. The newer SG12 offers updated control technology and improved generator performance, but the EA12V remains a capable machine for the price, especially on the used market.