MOLDINO -Ultra-deep fine-hole drills for high-hardened steel : EMSBHE-ATH | JSR GROUP

Marketing JSR2 - September 02, 2025

แท็ก

เหล็กแข็ง เครื่องมืออุตสาหกรรม เครื่องมือกัตแต่งโลหะ ดอกสว่าน MOLDINO HARDENED STEEL DRILLS CUTTING TOOLS

Ultra-deep fine-hole drills for high-hardened steel : EMSBHE-ATH

“From small hole EDM to drilling”
This marks the next step in the evolution of the Epoch Micro Step Borer H.
A total of 124 products ideal for various types of pin hole drilling

Do you have problems with EDM for deep, small-diameter pin holes?

When using small hole EDM on molds…

Drilling with EMSBHE

・ Requires switching from milling machine to EDM.
・ Requires frequent replacement of pipe electrodes.
・ Results in lower machining quality due to secondary discharge.
・ Results in lower machining efficiency due to side contact of electrodes.

Machine can’t be left unattended

・ Eliminates the need to switch from milling machine to EDM.
・ Reduces burrs and improves hole accuracy and surface quality.
・ Ensures long, consistent tool life and nighttime operation.

Results in significant labor savings and allows unmanned operation.

EMSBHE-ATH

Features of EMSBHE-ATH

Specially designed for micro-step drilling of deep, high-precision fine holes in high hardness steel

Special cutting edge shape for high hardness steel

Combines cutting edge rigidity and bite with smooth chip flow

Chip stopper and high rigidity neck shape

Uses proven ATH coating for high hardness steel machining.

EMSBHEvolution

1	Optimized surface treatment
Helps extend and stabilize tool life when machining 60HRC class high hardness steel.
2	Significantly expanded tool diameter lineup
Select the tool diameter to match the wire EDM and reamers to allow adjustment of tolerance for the subsequent process.

Ultra-deep fine-hole drills for high-hardened steel

Tool：Under neck length 15mm Machine：MC（HSK-E25）Vertical MC Work material：SLD（60HRC）　Cutting conditions：n=10,000min-1(vc=16m/min) vf=50mm/min(f =0.005mm/rev) Step feed：0.05mm Coolant：Water-based coolant 　 G83 Peck drilling cycle

EMSBHE consistently reaches end of life without breakage. Improved machining stability with 60HRC class high hardness steel

Comparison to conventional tools with PD613(58HRC)

Tool：Under neck length 15mm Machine：MC（HSK-E25）Vertical MC Work material：PD613（58HRC）　Cutting conditions：n=10,000min-1(vc=16m/min) vf=50mm/min(f =0.005mm/rev) Step feed：0.05mm Coolant：Water-based coolant 　 G83 Peck drilling cycle