End Mills provide deep machining in materials up to 70 HRC.

Press Release Summary:

Available in 0.2-3 mm diameters, EPDR Corner Radius End Mills provide high-speed milling of deep rib grooves, slots, and corners and are suited for die and mold applications. Compound neck shape optimizes breakage resistance and suppresses chatter, while 1.5-6° back taper on peripheral edges allows mills to avoid contact with workpiece. TH Nano-Composite coating, consisting of composite layers of nano-crystal material, provides hardness and heat resistance.

Original Press Release:

EPDR High-Precision Corner Radius End Mills

For Deep Machining in Materials up to 70HRC

Novi, MI, July 9, 2007 - The EPDR Corner Radius End Mill from Hitachi Tool is the
newest addition to their comprehensive line-up of sub-micrograin carbide tools for highperformance die/mold machining. Designed for high-precision and high-speed milling of deep rib grooves, slots, and corners in materials up to HRC70, they are well suited for die and mold applications that are traditionally performed by EDM (electrical discharge machining).

The EPDR's unique compound neck shape greatly improves breakage resistance and
suppresses chatter during milling. In addition, they feature the Back-Draft Effect: a 1.5° to 6° back taper on their peripheral edges that allows them to avoid contact with the workpiece.

Conventional end mills without the Back-Draft Effect cannot avoid contact with the
workpiece, and this leads to tool deflection, chatter, and vibration.

EPDR Corner Radius End Mills are coated with Hitachi's TH Nano-Composite Coating,
which achieves extraordinary heat resistance and hardness thanks its composite layers
consisting of nano-crystal material. EPDR End Mills are available in diameters from 0.2mm to 3mm in a wide variety of neck lengths and corner radii.

For more information on the EPDR End Mills or any other Hitachi Tool product, please
contact Hitachi Metals America, Ltd. Cutting Tools Group at 800-333-1514, or visit their website at www.hitachitoolusa.com.

Hitachi Metals America, Ltd. is the North American arm of the Tokyo-based Hitachi Metals Group. The Cutting Tools Group sells and supports the high-performance indexable and solid carbide cutting tools manufactured by Hitachi Tool Engineering, Ltd.

General Information:
Ken Miyamoto
Hitachi Metals America, LTD. -
Cutting Tools Group
41800 W. Eleven Mile Road, Suite 100
Novi, MI 48375
Tel: 800-333-1514
Fax: 248-465-6020
Email: ken.miyamoto@hitmet.com
Website: www.hitachitoolusa.com

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