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Premium Tungsten Carbide Micro Ball Nose End Mill - 2 Flute, HRC55 for Steel

High-precision tungsten carbide micro ball nose end mill (R0.15-R0.95), 2 flutes, optimized for HRC55 hardened steel. 4mm shank, 50mm OAL. Ideal for mold & CNC micro-machining.

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High Precision Tungsten Carbide Micro Ball Nose End Mill (2 Flute, HRC55)

Elevate your CNC micro-machining capabilities with our Premium Tungsten Carbide Micro Ball Nose End Mills. Engineered specifically for high-precision milling, these 2-flute micro cutters are designed to excel in machining carbon steel, alloy steel, and pre-hardened steel up to HRC55.
With cutter radius starting from an ultra-fine R0.15mm to R0.95mm, this series is the ultimate choice for intricate mold making, medical components, and precision electronics parts.

Key Features & SEO Benefits

  • Premium Tungsten Carbide Material: Ultra-fine grain carbide substrate ensures exceptional wear resistance and tool life, reducing CNC machine downtime.
  • Advanced HRC55 Capability: Specialized coating and geometry allow for smooth cutting of hardened steel materials up to 55 HRC.
  • 2-Flute Ball Nose Design: Perfectly optimized for 3D contouring, pocketing, and achieving superior surface finishes in deep cavities.
  • Precision Tolerance: Manufactured with strict dimensional accuracy for micro-machining, featuring a standard 4mm shank for ultimate rigidity and vibration reduction.
  • Versatile Micro Sizes: Wide range of micro radii (R0.15 - R0.95) to meet the most demanding intricate milling requirements.

Applications

This micro ball nose end mill is widely used in high-tech industries for precision milling applications:
  • Plastic Injection Molds & Die Making: High-precision cavity and core finishing.
  • Medical Industry: Micro-machining of surgical instruments and titanium implants.
  • Electronics & Aerospace: Micro components, watchmaking, and intricate metal parts.

Technical Specifications

All items in this series feature a standard Shank Diameter (D1) of 4.0mm and an Overall Length (L) of 50mm.
Cutter Radius (D)
Shank Diameter (D1)
Length of Cut (L1)
Overall Length (L)
R0.15
4.0 mm
0.6 mm
50 mm
R0.16
4.0 mm
0.64 mm
50 mm
R0.18
4.0 mm
0.7 mm
50 mm
R0.2
4.0 mm
0.8 mm
50 mm
R0.225
4.0 mm
0.9 mm
50 mm
R0.23
4.0 mm
0.92 mm
50 mm
R0.25
4.0 mm
1.0 mm
50 mm
R0.275
4.0 mm
1.1 mm
50 mm
R0.28
4.0 mm
1.12 mm
50 mm
R0.3
4.0 mm
1.2 mm
50 mm
R0.31
4.0 mm
1.24 mm
50 mm
R0.325
4.0 mm
1.3 mm
50 mm
R0.34
4.0 mm
1.36 mm
50 mm
R0.35
4.0 mm
1.4 mm
50 mm
R0.36
4.0 mm
1.44 mm
50 mm
R0.375
4.0 mm
1.5 mm
50 mm
R0.4
4.0 mm
1.6 mm
50 mm
R0.41
4.0 mm
1.64 mm
50 mm
R0.45
4.0 mm
1.8 mm
50 mm
R0.525
4.0 mm
2.1 mm
50 mm
R0.55
4.0 mm
2.2 mm
50 mm
R0.6
4.0 mm
2.4 mm
50 mm
R0.65
4.0 mm
2.6 mm
50 mm
R0.7
4.0 mm
2.8 mm
50 mm
R0.74
4.0 mm
2.96 mm
50 mm
R0.8
4.0 mm
3.2 mm
50 mm
R0.85
4.0 mm
3.4 mm
50 mm
R0.88
4.0 mm
3.52 mm
50 mm
R0.9
4.0 mm
3.6 mm
50 mm
R0.95
4.0 mm
3.8 mm
50 mm

Why Choose Our CNC Milling Tools?

As a leading cutting tool manufacturer, we ensure strict quality control for every end mill. We offer standard in-stock items for fast shipping, and we also provide customizable OEM/ODM solutions to match your exact machining needs.
Contact us today for the latest price list or to request a quote for custom sizes!