Page 6 - EDM Today Spring 2025

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EDM Today Magazine MITSUBISHI EDM Today Magazine
COVER STORY

GOES BIG!

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With a growing need to cut larger parts, in 2023, Mitsubishi made the decision to develop
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two new machines that will accommodate the trend for larger parts, particularly in the
aerospace and power generation industries. Incorporating the latest control and power
supply technology, the new machines set a new standard for EDM productivity.

Recently, Mitsubishi introduced two new machine models: the SG70 Sinker and the MV4800-ST Wire EDM.
The equipment was fi rst introduced in Japan for vetting.
After a successful trial period, both machines were made
available in North America and other parts of the world.

The MV4800-ST is capable of fully submerged cutting of
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workpieces up to almost 32 inches tall. Its auto-threading
system can anneal wire over 39 inches in length and can
auto-thread through the workpiece at both the start point
and directly through the gap if needed for broken wire
recovery. With support for a wire spool capacity of up to
55 lbs, the highly reliable auto-threading system is ideal
for lights-out operation on the largest of parts.

BASIC SPECIFICATIONS (All Dimensions Inches):
Machine Travels (XYZ): 31.5 x 23.6 x 31.89
Max. Workpiece Size (W x D x H): 49.2 x 40.1 x 31.69 Max.
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Max. Submerged Workpiece Weight: 6600 lbs
U/V Travels: +/- 3.93”
Taper Angle @ Thickness: 15 deg @ 14”
Wide Angle Taper (with optional guides): 45 deg @ 3.2”
Wire Diameter Range: 0.006 to 0.012
Minimum Start Hole Diameter: 0.02”

The MV4800-ST includes many advanced design features
MV4800-ST
and technologies that support high levels of accuracy and Shown with Head Fully Raised
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repeatability. The fi ne-grain Dianite casting is designed
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with extra-thick walls to provide a solid foundation for the
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