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2 flute long neck ball nose end mill hrc65 end mills 2 flute long neck ball nose end mill3 hrc65 end mills 2 flute long neck ball nose end mill

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.

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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

Recommended Materials for Machining (Highly Recommended: ⭐️ | Recommended: ⭕️ | Suggested: ◯)

Category Work Material Grade
DIE STEEL Carbon steels (S45C/S55C) ◯
Alloy steels (SK/SCM/SUS) ◯
Prehardened steels (NAK/HPM) ⭕️
Hardened steels (~55/~60/~70HRC) ⭕️
SPECIAL MATERIAL Aluminum alloys
Graphite
Copper ◯
Plastics
Carbon fiber
Titanium alloys ◯
Heat resistant alloys
Cemented carbide
Hard brittle (non-metallic) material

long neck ball nose end mill
Total 77 models

Model Number Outside Diameter Length Of Cut Effective Length Shank Taper Angle Overall Length Number Of Flutes Shank Diameter In Stock
SHGLR2-002005 R0.1 0.2 0.5 12° 50 2 4 ○
SHGLR2-002010 R0.1 0.2 1 12° 50 2 4 ○
SHGLR2-002015 R0.1 0.2 1.5 12° 50 2 4 ○
SHGLR2-003010 R0.15 0.3 1 12° 50 2 4 ○
SHGLR2-003015 R0.15 0.3 1.5 12° 50 2 4 ○
SHGLR2-003020 R0.15 0.3 2 12° 50 2 4 ○
SHGLR2-003030 R0.15 0.3 3 12° 50 2 4 ○
SHGLR2-004010 R0.2 0.4 1 12° 50 2 4 ○
SHGLR2-004020 R0.2 0.4 2 12° 50 2 4 ○
SHGLR2-004030 R0.2 0.4 3 12° 50 2 4 ○
SHGLR2-004040 R0.2 0.4 4 12° 50 2 4 ○
SHGLR2-005010 R0.25 0.5 1 12° 50 2 4 ○
SHGLR2-005020 R0.25 0.5 2 12° 50 2 4 ○
SHGLR2-005040 R0.25 0.5 4 12° 50 2 4 ○
SHGLR2-005060 R0.25 0.5 6 12° 50 2 4 ○
SHGLR2-005080 R0.25 0.5 8 12° 50 2 4 ○
SHGLR2-006020 R0.3 0.6 2 12° 50 2 4 ○
SHGLR2-006040 R0.3 0.6 4 12° 50 2 4 ○
SHGLR2-006060 R0.3 0.6 6 12° 50 2 4 ○
SHGLR2-006080 R0.3 0.6 8 12° 50 2 4 ○
SHGLR2-008020 R0.4 0.8 2 12° 50 2 4 ○
SHGLR2-008040 R0.4 0.8 4 12° 50 2 4 ○
SHGLR2-008060 R0.4 0.8 6 12° 50 2 4 ○
SHGLR2-008080 R0.4 0.8 8 12° 50 2 4 ○
SHGLR2-009020 R0.45 0.9 2 12° 50 2 4 ○
SHGLR2-009040 R0.45 0.9 4 12° 50 2 4 ○
SHGLR2-009060 R0.45 0.9 6 12° 50 2 4 ○
SHGLR2-009080 R0.45 0.9 8 12° 50 2 4 ○
SHGLR2-010020 R0.5 1 2 12° 50 2 4 ○
SHGLR2-010040 R0.5 1 4 12° 50 2 4 ○
SHGLR2-010060 R0.5 1 6 12° 50 2 4 ○
SHGLR2-010080 R0.5 1 8 12° 50 2 4 ○
SHGLR2-010100 R0.5 1 10 12° 50 2 4 ○
SHGLR2-010120 R0.5 1 12 12° 50 2 4 ○
SHGLR2-010140 R0.5 1 14 12° 50 2 4 ○
SHGLR2-010160 R0.5 1 16 12° 50 2 4 ○
SHGLR2-015040 R0.75 1.5 4 12° 50 2 4 ○
SHGLR2-015060 R0.75 1.5 6 12° 50 2 4 ○
SHGLR2-015080 R0.75 1.5 8 12° 50 2 4 ○
SHGLR2-015100 R0.75 1.5 10 12° 50 2 4 ○
SHGLR2-015120 R0.75 1.5 12 12° 50 2 4 ○
SHGLR2-015140 R0.75 1.5 14 12° 50 2 4 ○
SHGLR2-015160 R0.75 1.5 16 12° 50 2 4 ○
SHGLR2-020040 R1 2 4 12° 50 2 4 ○
SHGLR2-020060 R1 2 6 12° 50 2 4 ○
SHGLR2-020080 R1 2 8 12° 50 2 4 ○
SHGLR2-020100 R1 2 10 12° 50 2 4 ○
SHGLR2-020120 R1 2 12 12° 50 2 4 ○
SHGLR2-020160 R1 2 16 12° 50 2 4 ○
SHGLR2-020040-6 R1 2 4 12° 60 2 6 ○
SHGLR2-020060-6 R1 2 6 12° 60 2 6 ○
SHGLR2-020080-6 R1 2 8 12° 60 2 6 ○
SHGLR2-020100-6 R1 2 10 12° 60 2 6 ○
SHGLR2-020120-6 R1 2 12 12° 60 2 6 ○
SHGLR2-020160-6 R1 2 16 12° 60 2 6 ○
SHGLR2-030060 R1.5 3 6 12° 50 2 4 ○
SHGLR2-030080 R1.5 3 8 12° 50 2 4 ○
SHGLR2-030100 R1.5 3 10 12° 50 2 4 ○
SHGLR2-030120 R1.5 3 12 12° 50 2 4 ○
SHGLR2-030160 R1.5 3 16 12° 50 2 4 ○
SHGLR2-030200 R1.5 3 20 12° 50 2 4 ○
SHGLR2-030060-6 R1.5 3 6 12° 60 2 6 ○
SHGLR2-030080-6 R1.5 3 8 12° 60 2 6 ○
SHGLR2-030100-6 R1.5 3 10 12° 60 2 6 ○
SHGLR2-030120-6 R1.5 3 12 12° 60 2 6 ○
SHGLR2-030160-6 R1.5 3 16 12° 60 2 6 ○
SHGLR2-030200-6 R1.5 3 20 12° 60 2 6 ○
SHGLR2-040080 R2 4 8 12° 50 2 4 ○
SHGLR2-040100 R2 4 10 12° 50 2 4 ○
SHGLR2-040120 R2 4 12 12° 50 2 4 ○
SHGLR2-040160 R2 4 16 12° 50 2 4 ○
SHGLR2-040200 R2 4 20 12° 50 2 4 ○
SHGLR2-040080-6 R2 4 8 12° 60 2 6 ○
SHGLR2-040100-6 R2 4 10 12° 60 2 6 ○
SHGLR2-040120-6 R2 4 12 12° 60 2 6 ○
SHGLR2-040160-6 R2 4 16 12° 60 2 6 ○
SHGLR2-040200-6 R2 4 20 12° 60 2 6 ○

long neck ball nose end mill
Milling Conditions

Work Material HRC30-45 Prehardened Steels HRC45-55 Hardened Steels HRC55-65 Hardened Steels
Radius of Ball Nose (mm)Effective Length (min-1)Speed (mm/min)Feed Ap (mm)Axial depth Ae (mm)Radidl depth (min-1)Speed (mm/min)Feed Ap (mm)Axial depth Ae (mm)Radidl depth (min-1)Speed (mm/min)Feed Ap (mm)Axial depth
Ae (mm)Radidl depth
R0.1 0.5 30000 150 0.006 0.006 30000 120 0.006 0.006 30000 100 0.003 0.003
R0.1 1 30000 100 0.006 0.006 30000 100 0.003 0.003 26000 60 0.002 0.002
R0.1 1.5 30000 100 0.003 0.003 30000 100 0.003 0.003 24000 40 0.001 0.001
R0.15 1 28000 300 0.01 0.01 26000 200 0.006 0.006 26000 200 0.005 0.005
R0.15 1.5 28000 300 0.008 0.008 26000 200 0.004 0.004 26000 200 0.003 0.003
R0.15 2 24000 200 0.007 0.007 24000 150 0.003 0.003 24000 100 0.003 0.003
R0.15 3 20000 100 0.005 0.005 18000 100 0.003 0.003 18000 50 0.002 0.002
R0.2 1 24000 600 0.01 0.01 20000 500 0.01 0.01 18000 300 0.01 0.01
R0.2 2 24000 400 0.01 0.01 20000 400 0.008 0.01 18000 250 0.008 0.008
R0.2 3 20000 300 0.008 0.008 18000 300 0.006 0.006 18000 200 0.005 0.005
R0.2 4 18000 150 0.005 0.005 16000 150 0.003 0.003 18000 100 0.003 0.003
R0.25 1 22000 800 0.015 0.015 20000 600 0.01 0.01 16000 500 0.01 0.015
R0.25 2 22000 800 0.015 0.015 18000 600 0.01 0.01 16000 400 0.01 0.015
R0.25 4 18000 400 0.01 0.01 16000 300 0.008 0.008 15000 100 0.005 0.005
R0.25 6 14000 200 0.005 0.005 14000 150 0.008 0.008 15000 80 0.005 0.005
R0.25 8 14000 100 0.003 0.003 14000 100 0.003 0.003 15000 40 0.003 0.003
R0.3 2 20000 1000 0.02 0.02 20000 800 0.02 0.02 13000 700 0.02 0.02
R0.3 4 17000 500 0.015 0.015 15000 500 0.01 0.01 13000 300 0.01 0.01
R0.3 6 15000 400 0.01 0.01 13000 300 0.008 0.008 12000 200 0.008 0.008
R0.3 8 14000 200 0.005 0.005 13000 150 0.005 0.005 12000 100 0.003 0.005
R0.4 2 18000 1200 0.03 0.03 18000 1200 0.02 0.02 13000 700 0.02 0.02
R0.4 4 18000 800 0.02 0.02 18000 800 0.02 0.02 12000 600 0.01 0.03
R0.4 6 14000 500 0.01 0.01 16000 600 0.01 0.02 10000 500 0.01 0.02
R0.4 8 14000 300 0.01 0.01 15000 400 0.005 0.01 10000 300 0.008 0.02
R0.45 2 17000 1400 0.03 0.03 17000 1300 0.02 0.03 12000 700 0.02 0.03
R0.45 4 17000 1200 0.03 0.03 17000 1000 0.02 0.03 11000 600 0.01 0.03
R0.45 6 15000 800 0.02 0.02 13000 600 0.01 0.02 10000 500 0.01 0.02
R0.45 8 13000 500 0.01 0.01 12000 400 0.01 0.02 10000 400 0.01 0.02
R0.5 2 16000 1500 0.03 0.03 14000 1200 0.02 0.03 12000 800 0.02 0.03
R0.5 4 16000 1300 0.03 0.03 14000 1000 0.02 0.03 12000 700 0.02 0.03
R0.5 6 16000 1000 0.03 0.03 14000 800 0.02 0.03 11000 600 0.01 0.03
R0.5 8 14000 500 0.02 0.02 12000 500 0.01 0.02 10000 500 0.01 0.02
R0.5 10 12000 400 0.01 0.01 12000 400 0.01 0.02 10000 400 0.01 0.02
R0.5 12 11000 300 0.01 0.01 10000 300 0.01 0.02 9000 300 0.006 0.02
R0.5 14 10000 250 0.01 0.01 10000 200 0.008 0.01 9000 300 0.006 0.01
R0.5 16 10000 200 0.01 0.01 10000 200 0.005 0.01 9000 200 0.005 0.01
R0.75 4 16000 1600 0.03 0.06 16000 1400 0.02 0.04 10000 800 0.02 0.04
R0.75 6 16000 1400 0.03 0.06 14000 1200 0.02 0.04 10000 800 0.02 0.04
R0.75 8 16000 1200 0.03 0.05 13000 1000 0.02 0.04 9000 800 0.02 0.04
R0.75 10 12000 800 0.02 0.05 12000 600 0.01 0.04 9000 800 0.01 0.04
R0.75 12 10000 500 0.02 0.04 11000 500 0.01 0.04 8500 600 0.01 0.04
R0.75 14 10000 400 0.01 0.03 10000 400 0.01 0.02 8500 400 0.01 0.02
R0.75 16 8000 300 0.01 0.03 9000 300 0.01 0.01 8500 300 0.01 0.01
R1 4 16000 1800 0.03 0.06 16000 2000 0.03 0.06 10000 1500 0.02 0.04
R1 6 15000 1800 0.03 0.06 14000 1800 0.03 0.06 9000 1300 0.02 0.04
R1 8 15000 1800 0.03 0.06 14000 1800 0.03 0.06 9000 1300 0.02 0.04
R1 10 15000 1800 0.03 0.06 14000 1800 0.03 0.06 9000 1000 0.02 0.04
R1 12 13000 1600 0.03 0.06 12000 1400 0.02 0.06 8000 800 0.02 0.04
R1 16 10000 1000 0.02 0.06 10000 1000 0.02 0.06 8000 500 0.01 0.04
R1 4 16000 1800 0.03 0.06 16000 2000 0.03 0.06 10000 1500 0.02 0.04
R1 6 15000 1800 0.03 0.06 14000 1800 0.03 0.06 9000 1400 0.02 0.04
R1 8 15000 1800 0.03 0.06 14000 1800 0.03 0.06 9000 1400 0.02 0.04
R1 10 15000 1800 0.03 0.06 14000 1800 0.03 0.06 9000 1200 0.02 0.04
R1 12 13000 1600 0.03 0.06 12000 1400 0.02 0.06 8000 1000 0.02 0.04
R1 16 10000 1000 0.02 0.06 10000 1000 0.02 0.06 8000 600 0.01 0.04
R1.5 6 14000 2200 0.05 0.07 13000 2200 0.03 0.07 9000 1300 0.02 0.06
R1.5 8 14000 2200 0.05 0.07 13000 2200 0.03 0.07 9000 1300 0.02 0.06
R1.5 10 14000 2200 0.05 0.07 13000 2200 0.03 0.07 9000 1300 0.02 0.06
R1.5 12 14000 2200 0.04 0.07 13000 2200 0.03 0.07 9000 1300 0.02 0.06
R1.5 16 12000 2000 0.03 0.07 11000 2000 0.03 0.07 9000 1300 0.02 0.06
R1.5 20 11000 1000 0.03 0.07 10000 1000 0.02 0.07 8000 1000 0.02 0.06
R1.5 6 14000 2200 0.05 0.07 13000 2200 0.03 0.07 8000 1500 0.02 0.06
R1.5 8 14000 2200 0.05 0.07 13000 2200 0.03 0.07 8000 1500 0.02 0.06
R1.5 10 14000 2200 0.05 0.07 13000 2200 0.03 0.07 9000 1500 0.02 0.06
R1.5 12 14000 2200 0.04 0.07 13000 2200 0.03 0.07 9000 1500 0.02 0.06
R1.5 16 12000 2000 0.03 0.07 11000 2000 0.03 0.07 9000 1500 0.02 0.06
R1.5 20 11000 1000 0.03 0.07 10000 1000 0.02 0.07 8000 1000 0.02 0.06
R2 8 14000 2400 0.05 0.07 12000 2200 0.03 0.07 8000 1500 0.02 0.06
R2 10 14000 2400 0.05 0.07 12000 2200 0.03 0.07 8000 1500 0.02 0.06
R2 12 14000 2400 0.05 0.07 12000 2200 0.03 0.07 8000 1500 0.02 0.06
R2 16 14000 2400 0.04 0.07 12000 2200 0.03 0.07 8000 1500 0.02 0.06
R2 20 12000 2000 0.04 0.07 11000 2000 0.03 0.07 8000 1500 0.02 0.06
R2 8 14000 2400 0.05 0.07 12000 2200 0.03 0.07 8000 1500 0.02 0.06
R2 10 14000 2400 0.05 0.07 12000 2200 0.03 0.07 8000 1500 0.02 0.06
R2 12 14000 2400 0.05 0.07 12000 2200 0.03 0.07 8000 1500 0.02 0.06
R2 16 14000 2200 0.04 0.07 12000 2200 0.03 0.07 8000 1500 0.02 0.06
R2 20 12000 2000 0.04 0.07 11000 2000 0.03 0.07 8000 1500 0.02 0.06

Note:
* Suitable for air blow, water solube coolant, oil coolant and oil mist;
* Recommend air blow and oil mist for hardened materials above HRC58.

Download 1: hrc65 end mills 2 flute long neck ball nose end mill File
Download 2: hrc65 end mills 2 flute long neck ball nose end mill File

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