Product Overview

HRC65° Deep Hook Ball Nose End Mill : high-hardness micro-diameter, long-reach solid carbide ball nose end mill (commonly referred to as a high-hard micro long-neck ball end mill). Engineered specifically for precision mold manufacturing and the die industry, it represents a cutting-edge solution for high-aspect-ratio features, including deep three-dimensional contoured cavities, narrow radius slots, and intricate corner rest-milling in hardened steels.

Key Features & Advantages

Optimized for HRC65° Extreme Hardness: Manufactured from an ultra-fine/nano-grade solid carbide (tungsten steel) substrate. It delivers exceptional red-hardness and high transverse rupture strength, allowing it to withstand the severe mechanical stresses of cutting heat-treated and quenched steels.

Advanced Blue-Purple / Iridescent Nano-Coating: Coated with a state-of-the-art multi-layer nano-composite coating specially formulated for hard milling. This coating provides a surface hardness exceeding and outstanding oxidation resistance, rendering it excellent for high-speed, dry-milling operations.

High-Rigidity Ball Nose & Robust Core Web: As demonstrated in the close-up, the spherical cutting edge is precision-ground with a reinforced core web design. This configuration maximizes cutting edge strength, drastically reducing micro-chipping at the spherical tip and ensuring excellent dimensional accuracy during continuous profiling.

Extended Tapered Neck Clearance: Features an extended, reduced-diameter neck that progressively widens into a taper toward the shank. This reinforced layout allows the tool to plunge safely into deep, restricted cavities without shank rub, while effectively suppressing tool deflection and chatter during high-load hard milling.

Typical Applications

Machining Operations: High-precision 3D profile finishing of hardened mold cavities, deep-pocket corner clearing, narrow radius-bottom slotting, and micro-machining of high-hardness components for the medical and aerospace sectors.

Applicable Materials: Specifically tailored for medium-to-ultra-high hardness materials, including:

Quenched and Hardened Steels, Heat-Treated Die Steels (Machining range up to HRC 55-65, such as SKD11, SKD61, Cr12MoV, High-Speed Steel, etc.)

High-Strength Alloy Steels and pre-hardened components