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hrc65 end mills 2 flute long neck ball nose end mill

SAMHO Long Neck Square End Mill – Precision Machining for Hardened Materials

Engineered for precision in hardened materials up to 65HRC, the SAMHO Long Neck Square End Mill is the ultimate solution for deep cavity and narrow groove machining. Featuring an ultra-fine grain carbide substrate and a high-performance HG coating, this tool provides exceptional wear resistance and thermal stability. Its unique “Long Neck, Short Flute” geometry ensures maximum rigidity while eliminating interference in complex 3D contours. Ideal for professional mold making, aerospace, and medical component manufacturing.

When machining hardened mold steels, standard tools often struggle with reach and vibration. The SAMHO HRC65 Long Neck Series (Φ0.2–2 mm) is specifically designed to bridge the gap between deep-reach capability and high-speed stability.

Optimized for Deep Cavities & Hardened Steel

The extended neck design provides the necessary clearance and reach for machining deep pockets, narrow grooves, and complex electrode cavities. Optimized for materials up to 65HRC, it maintains structural integrity where standard-length tools fail.

Advanced 2-Flute Geometry for Chip Evacuation

The 2-flute configuration is engineered to:

Maximize Chip Flow: Prevents clogs in deep-slot milling
Reduce Cutting Forces: Minimizes tool deflection and vibration
Enhance Surface Finish: Provides superior stability during roughing and semi-finishing

High-Performance Carbide & HG Coating

Built with a micro-grain carbide substrate, this tool offers extreme toughness. The advanced HG Nano-coating provides high-hardness, allowing for high-speed, dry, or semi-dry machining while extending tool life significantly compared to uncoated alternatives.

Precision Engineering for Micro-Milling

With diameters ranging from Φ0.2 to Φ2.0, this series is perfect for intricate 3D contouring in:

Injection Mold Making: Core and cavity precision
Die-Sinking Electrodes: Copper and graphite machining
Medical & Aerospace: High-tolerance small parts

Technical Specifications & Usage Tips

Coolant Recommendation: For stainless steel and heat-resistant alloys, use oil coolant; for hardened steel, air/mist cooling is preferred
Tool Protection: Use a non-contact measuring device to prevent accidental damage during setup
Speed/Feed Adjustment: If your CNC machine cannot reach recommended RPMs, decrease spindle speed and feed rate proportionally to maintain tool life

Why Source from SAMHO China?

Bulk Wholesale Deals: Reduces cost per part
OEM Customization: Tailored neck lengths and coatings for your workflow
Proven Reliability: 37+ models in stock for immediate global shipping

Model Number	Cutting Diameter	Flute Length	Usable Length	Taper Angle	Overall Length (OAL)	Number of Flutes	Shank Diameter	In Stock
SHGLS2-002010	0.2	0.3	1	12°	50	2	4	●
SHGLS2-002020	0.2	0.3	2	12°	50	2	4	●
SHGLS2-002030	0.2	0.3	3	12°	50	2	4	●
SHGLS2-003010	0.3	0.5	1	12°	50	2	4	●
SHGLS2-003015	0.3	0.5	1.5	12°	50	2	4	●
SHGLS2-003020	0.3	0.5	2	12°	50	2	4	●
SHGLS2-003030	0.3	0.5	3	12°	50	2	4	●
SHGLS2-004010	0.4	0.6	1	12°	50	2	4	●
SHGLS2-004020	0.4	0.6	2	12°	50	2	4	●
SHGLS2-004030	0.4	0.6	3	12°	50	2	4	●
SHGLS2-004040	0.4	0.6	4	12°	50	2	4	●
SHGLS2-005010	0.5	0.75	1	12°	50	2	4	●
SHGLS2-005020	0.5	0.75	2	12°	50	2	4	●
SHGLS2-005040	0.5	0.75	4	12°	50	2	4	●
SHGLS2-005060	0.5	0.75	6	12°	50	2	4	●
SHGLS2-006020	0.6	0.9	2	12°	50	2	4	●
SHGLS2-006040	0.6	0.9	4	12°	50	2	4	●
SHGLS2-006060	0.6	0.9	6	12°	50	2	4	●
SHGLS2-006080	0.6	0.9	8	12°	50	2	4	●
SHGLS2-008020	0.8	1.2	2	12°	50	2	4	●
SHGLS2-008040	0.8	1.2	4	12°	50	2	4	●
SHGLS2-008060	0.8	1.2	6	12°	50	2	4	●
SHGLS2-008080	0.8	1.2	8	12°	50	2	4	●
SHGLS2-010040	1.0	1.5	4	12°	50	2	4	●
SHGLS2-010060	1.0	1.5	6	12°	50	2	4	●
SHGLS2-010080	1.0	1.5	8	12°	50	2	4	●
SHGLS2-010100	1.0	1.5	10	12°	50	2	4	●
SHGLS2-015040	1.5	2.3	4	12°	50	2	4	●
SHGLS2-015060	1.5	2.3	6	12°	50	2	4	●
SHGLS2-015080	1.5	2.3	8	12°	50	2	4	●
SHGLS2-015100	1.5	2.3	10	12°	50	2	4	●
SHGLS2-020040	2.0	3.0	4	12°	50	2	4	●
SHGLS2-020060	2.0	3.0	6	12°	50	2	4	●
SHGLS2-020080	2.0	3.0	8	12°	50	2	4	●
SHGLS2-020100	2.0	3.0	10	12°	50	2	4	●
SHGLS2-020120	2.0	3.0	12	12°	50	2	4	●
SHGLS2-020160	2.0	3.0	16	12°	50	2	4	●
SHGLS4-010040	1.0	1.5	4	12°	50	4	4	●
SHGLS4-010060	1.0	1.5	6	12°	50	4	4	●
SHGLS4-010080	1.0	1.5	8	12°	50	4	4	●
SHGLS4-010100	1.0	1.5	10	12°	50	4	4	●
SHGLS4-015040	1.5	2.3	4	12°	50	4	4	●
SHGLS4-015060	1.5	2.3	6	12°	50	4	4	●
SHGLS4-015080	1.5	2.3	8	12°	50	4	4	●
SHGLS4-015100	1.5	2.3	10	12°	50	4	4	●
SHGLS4-020060	2.0	3.0	6	12°	50	4	4	●
SHGLS4-020080	2.0	3.0	8	12°	50	4	4	●
SHGLS4-020100	2.0	3.0	10	12°	50	4	4	●
SHGLS4-020120	2.0	3.0	12	12°	50	4	4	●
SHGLS4-020160	2.0	3.0	16	12°	50	4	4	●
SHGLS4-020200	2.0	3.0	20	12°	50	4	4	●
SHGLS4-030080	3.0	4.5	8	12°	50	4	4	●
SHGLS4-030100	3.0	4.5	10	12°	50	4	4	●
SHGLS4-030120	3.0	4.5	12	12°	50	4	4	●
SHGLS4-030160	3.0	4.5	16	12°	50	4	4	●
SHGLS4-030200	3.0	4.5	20	12°	50	4	4	●
SHGLS4-030080-6	3.0	4.5	8	12°	50	4	6	●
SHGLS4-030100-6	3.0	4.5	10	12°	50	4	6	●
SHGLS4-030120-6	3.0	4.5	12	12°	50	4	6	●
SHGLS4-030160-6	3.0	4.5	16	12°	50	4	6	●
SHGLS4-030200-6	3.0	4.5	20	12°	50	4	6	●