Seibu MEX15: Ultra Precision
Precision Wire EDMs ±0.5 μm pitch accuracy

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Seibu’s MEX15 wire EDM is built to conquer the impossible in wire EDM precision. The machine is designed to deliver ultra-precision by holding a pitch accuracy of ±0.5 μm. It has the ability to achieve roundness of 0.5 μm, straightness of 0.1 μm and can thread wire as small as 0.001 inch. The Machine is available in Water and Oil Specs. Machine castings are ground and hand scrapped for complete flatness. Guideways are checked for flatness, lasered for straightness and test cuts are performed on all machines which are then checked on a CMM for accuracy resulting in high precision parts. The new Smart NC (Fanuc Control) 21.5” touch panel, that can access all operations like a smartphone. The control has been customized to show more information so operators can check the necessary cutting data or maintenance work on any screen at any time.

Seibu MEX15: Ultra Precision

Main Specifications

Note: These numbers are static accuracies during the time of assembly at the factory


Axis travel X,Y,Z 5.9” x 5.9” x 4.7
Max. workpiece weight 26.4 lbs.
Max. workpiece dimensions WxDxH 7.0” x 6.5” x 2.3”
Wire diameter 0.00118” – 0.006” (0.004” is standard)
Automatic wire threader standard
U-V axis travel UxV ±0.78”
Max.taper angle ±10°
Machine Dimensions WxDxH 68.1” x 68.3” x 73.0”
Machine Weight 7,165 lbs.



*Specifications are subject to change without prior notice.