Mitsubishi Electric Sinker EDM (Ram EDM)

Mitsubishi Electric EA8 Advance

Est. $160,000 - $240,000 Possible older model Updated 2026-10-03

This model was not found in Mitsubishi Electric's current lineup when we checked on 2026-10-03 (lineup page). It may be a superseded or older model; the specifications below are as we last recorded them.

Key Specifications

X Travel

400 mm (15.75 in)

Y Travel

300 mm (11.81 in)

Z Travel

250 mm (9.84 in)

work table size

800 x 550 mm (31.5 x 21.7 in)

work tank inner

650 x 500 x 350 mm (25.6 x 19.7 x 13.8 in)

max workpiece weight

400 kg (882 lb)

How much does the Mitsubishi Electric EA8 Advance cost?

Estimated price range

Est.$160,000 - $240,000

Our best estimate for a sinker edm (ram edm) in this class — not a quote from Mitsubishi Electric. Configuration moves it a long way.

Overview

The Mitsubishi Electric EA8 Advance is a small CNC sinker EDM. The listed figures give it 400 mm (15.75 in) of X travel, 300 mm (11.81 in) of Y and 250 mm (9.84 in) of Z, with a maximum workpiece weight of 400 kg (882 lb). Mitsubishi Electric's current lineup does not include a model under this name, so the page is most useful to someone assessing a used machine, and each figure should be confirmed against that machine's own documentation.

The generator is listed as the FP80 AI pulse generator with Miracle Circuit, the control as a Mitsubishi M800S CNC, and the axes as ball screws with linear scales. Finish is given as VDI 3 / Ra 0.08 µm achievable and electrode wear as near-zero on graphite with the Miracle Circuit. Both are best-case statements, not results for a particular electrode and steel, so ask for a test burn on your own geometry before quoting to them.

Electrode-to-table clearance runs from 100 to 350 mm (3.9 to 13.8 in). That range, more than the Z stroke alone, decides whether a long electrode on its holder still clears a tall block, so add up the stack before taking on a deep rib. The machine is listed at 1,600 x 2,200 x 2,300 mm (63.0 x 86.6 x 90.6 in) and 4,200 kg (9,259 lb).

Two neighbours frame it. The EA8PV Advance has 300 mm (11.8 in) of X and 250 mm (9.8 in) of Y, shorter than the strokes listed here, while the EA12 Advance steps up to 600 mm (23.6 in) of X and 400 mm (15.75 in) of Y.

Full Specifications

Parameter	Value
X-Axis Travel	400 mm (15.75 in)
Y-Axis Travel	300 mm (11.81 in)
Z-Axis Travel	250 mm (9.84 in)
Work Table Size	800 x 550 mm (31.5 x 21.7 in)
Work Tank Inner	650 x 500 x 350 mm (25.6 x 19.7 x 13.8 in)
Max Workpiece Weight	400 kg (882 lb)
Electrode to Table Clearance	100 - 350 mm (3.9 - 13.8 in)
Drive System	High-precision ball screws with linear scales
Generator	FP80 AI pulse generator with Miracle Circuit
Surface Finish	VDI 3 / Ra 0.08 um achievable
Electrode Wear	Near-zero on graphite with Miracle Circuit
CNC Control	Mitsubishi M800S CNC
Machine Dimensions	1,600 x 2,200 x 2,300 mm (63.0 x 86.6 x 90.6 in)
Machine Weight	4,200 kg (9,259 lb)
Connectivity	Ethernet, remote monitoring

Specifications compiled from manufacturer literature and industry references. Not independently verified against a published spec sheet — confirm with the manufacturer or an authorised dealer before making a purchasing decision.

Strengths & Limitations

Strengths

Listed travels of 400 x 300 x 250 mm (15.75 x 11.81 x 9.84 in), longer in X and Y than the 300 x 250 mm of the EA8PV Advance
FP80 AI pulse generator with Miracle Circuit, with electrode wear listed as near-zero on graphite
Finish listed as VDI 3 / Ra 0.08 µm achievable, fine enough to cut down hand polishing on cavity surfaces
Ball screw axes with linear scales, so position is read at the axis itself
Ethernet and remote monitoring appear in the listed connectivity

Limitations

Maximum workpiece weight is 400 kg (882 lb), which rules out heavier mold bases
Electrode-to-table clearance tops out at 350 mm (13.8 in), so a tall block leaves little room for the electrode and its holder
The listed figures give no electrode weight limit, tool changer or dielectric capacity; those have to be read off the machine itself

Best For

Small cavities and inserts inside 400 x 300 mm (15.75 x 11.81 in) of X-Y travel Graphite electrode work, where the listed near-zero wear applies Fine-finish cavities aiming at the listed Ra 0.08 µm Blocks and fixtures up to 400 kg (882 lb)

Frequently Asked Questions

01 What are the travels of the Mitsubishi Electric EA8 Advance?

The listed figures are 400 mm (15.75 in) in X, 300 mm (11.81 in) in Y and 250 mm (9.84 in) in Z. Electrode-to-table clearance is listed separately as 100 to 350 mm (3.9 to 13.8 in), and that is the figure to check when a tall workpiece and a long electrode have to fit together.

02 How heavy a workpiece can the EA8 Advance carry?

The listed maximum workpiece weight is 400 kg (882 lb). Count the fixture, any magnetic chuck or pallet and the block together against that figure. The machine itself is listed at 4,200 kg (9,259 lb).

03 What surface finish and electrode wear are listed for the EA8 Advance?

The table gives VDI 3 / Ra 0.08 µm as achievable and electrode wear as near-zero on graphite with the Miracle Circuit of the FP80 AI pulse generator. Treat both as best-case values. Real results depend on electrode material, area and flushing, so a test burn is the only reliable check.

04 How does the EA8 Advance compare with the EA8PV Advance?

The EA8PV Advance has 300 mm (11.8 in) of X, 250 mm (9.8 in) of Y and 250 mm (9.8 in) of Z with a 500 x 350 mm (19.7 x 13.8 in) table and a 550 kg (1213 lb) table load. The figures listed for the EA8 Advance are 400 mm (15.75 in) of X and 300 mm (11.81 in) of Y on the same 250 mm of Z, with a 400 kg (882 lb) workpiece limit.