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Press Release

Sumitomo Electric Expands Its Flat MultiDrill MDF Series

Products & Technologies

November 29, 2016
Sumitomo Electric Industries, Ltd.
*This press release was originally published in Japanese on September 27, 2016.

Sumitomo Electric Hardmetal Corporation has expanded the product lineup of the Flat MultiDrill MDF series. The company launched a total of 107 items of a long-shanked series and 198 items of an internal coolant hole series this September. In November, it will also release the Flat-Head MFS series, along with drill holders for 1.5 Dc drilling depth, to expand the SEC-MultiDrill series.

Conventionally, when machining holes on inclined, cylindrical or other non-flat surfaces, a spot-facing process with an endmill is necessary to accurately locate the surface.

The Flat MultiDrill MDF series, with a unique high-rigidity design, allows direct and efficient machining on sloping or cylindrical surfaces and drilling flat-bottom holes, such as those for bolt seats, while reducing burrs during drill retraction. Shortened machining times and process integration lower the cost per component. This series expansion, an even wider range of drilling applications can be achieved.

Sumitomo Electric Expands Its Flat MultiDrill MDF Series

1. Features
  • Drilling stability
    High rigidity, stable drilling is realized through the utilization of RS Thinning, whereby a certain degree of thickness is provided at the bottom face of the drill.
  • Chip evacuation
    Excellent chip evacuation is achieved with wide chip pockets and high quality finished flutes.
  • Cutting edge strength
    Optimized cutting edge design improves impact resistance and stability during drilling.
2. Expanded lineup
MDF series, long-shanked type (MDF-L2D): Total of 107 items

Suitable for the finishing of deep holes that avoids snagging.

Application drilling depth 2xDc (drill diameter)
Drill diameter ø3.0 to 12.0 mm, in 0.1 mm increments
ø12.5 to 20.0 mm, in 0.5 mm increments
MDF series with internal coolant holes (MDF-H3D/H5D): Total of 198 items

Achieving high efficiency drilling with excellent chip evacuation.

Application drilling depth 3xDc (drill diameter), 5xDc (drill diameter)
Drill diameter ø3.0 to 12.0mm, in 0.1mm increments
ø12.5 to 16.0mm, in 0.5mm increments
SEC-MultiDrill Flat-Head MFS series (SMDT-MFS): Total of 37 items

For drilling large-diameter holes, along with an expansion of holders with 1.5 Dc drilling depth.

Application drilling depth 1.5xDc (drill diameter)
Drill diameter ø12.0 to 30.0mm, in 0.5mm increments
3. Sales plan

Estimated annual sales of 80 million yen in 2016 and 200 million yen in 2017.

4. Pricing
long-shanked type ¥8,400 to ¥71,000 (without tax)
with internal coolant holes ¥10,500 to ¥48,800 (without tax)
Flat-Head MFS series ¥7,700 to ¥17,400 (without tax)
1.5 Dc drilling depth ¥38,300 to ¥56,000 (without tax)
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