The HS(200) Micro Diameter 2 Flute Ball Nose End Mill combines 0.2 μm ultra-fine grain carbide with an AlTiCrSiN PVD coating for precision machining. Designed for fine features in hardened steel up to 65 HRC, mold steel, stainless steel, titanium alloys, and nickel-based superalloys.
The HS(200) Micro Diameter 2 Flute Ball Nose End Mill is designed for precision milling of small features, detailed contours, and complex surfaces.
Its micro-diameter ball nose profile allows machining in areas where a conventional ball nose end mill may be too large.
The tool uses a 0.2 μm ultra-fine grain carbide substrate combined with an AlTiCrSiN multi-element PVD coating.
This combination is designed for demanding high-speed machining of hardened and difficult-to-machine materials while supporting consistent finishing performance.
Micro Diameter for Precision Machining
Small-diameter ball nose end mills are particularly useful for machining fine geometries and detailed surfaces.
The HS(200) is suitable for small cavities, fine grooves, miniature features, narrow contours, and detailed 3D surfaces.
Its compact cutting profile helps provide the tool access needed when feature size is a limiting factor.
AlTiCrSiN Coating for High-Temperature Applications
The AlTiCrSiN multi-element PVD coating provides high coating hardness and resistance to elevated cutting temperatures.
Its high-temperature performance above approximately 1100°C makes it suitable for demanding high-speed machining, including dry and semi-dry cutting.
The coating is also available for coolant-assisted machining when required by the application.
Key Features & Benefits
0.2 μm Ultra-Fine Grain Carbide
The HS(200) uses 0.2 μm ultra-fine grain carbide for a fine and stable cutting edge.
The substrate is designed to support edge stability and wear resistance during precision milling.
2-Flute Ball Nose Geometry
The 2-flute ball nose profile is suitable for fine 3D contouring, curved surfaces, profiling, and finishing.
It is particularly useful when smaller tool geometry is required to reproduce detailed surface features.
Machining Hardened Steel up to 65 HRC
The HS(200) is designed for hardened steel and mold steel applications up to 65 HRC.
This makes the tool suitable for precision hard milling where both tool durability and dimensional control are important.
High-Speed and Dry Machining
The HS(200) is optimized for high-speed, dry, and semi-dry cutting.
It can also be used with coolant when required by the machining process.
Designed for High Surface Finish Requirements
The ball nose geometry is suited to finishing complex surfaces where surface quality is important.
The HS(200) is therefore suitable for applications that combine fine feature machining, hardened materials, and demanding surface finish requirements.
Machining Challenges the HS(200) Helps Solve
Large Tools Cannot Reach Fine Features
A conventional ball nose end mill may be too large for miniature cavities and detailed geometries.
The micro-diameter design allows the HS(200) to work on smaller features and fine surface details.
Maintaining Edge Stability in Precision Milling
Micro machining requires a stable cutting edge because small tools have limited cutting margins.
The 0.2 μm ultra-fine grain carbide is designed to provide the edge stability required for demanding precision applications.
Heat During Hard and Dry Cutting
Hardened materials and dry machining can produce substantial heat at the cutting edge.
The AlTiCrSiN coating provides high-temperature performance above approximately 1100°C to support demanding cutting conditions.
Surface Quality on Detailed 3D Features
Fine 3D surfaces and small radii require controlled cutting rather than simply high material removal.
The ball nose profile is suited to contouring and finishing operations where surface quality is a key requirement.
Recommended Materials
The HS(200) is suitable for:
Actual tool selection should consider workpiece hardness, feature size, tool diameter, machine rigidity, spindle capability, and cutting conditions.
Typical Applications
The HS(200) Micro Diameter Ball Nose End Mill is suitable for:
It is particularly useful when small feature size, surface quality, and hardened-material capability need to be addressed in the same machining operation.
Technical Specifications
| Specification | Details |
| Product Series | HS(200) |
| Tool Type | Micro Diameter Ball Nose End Mill |
| Number of Flutes | 2 |
| Substrate | Ultra-Fine Grain Carbide |
| Carbide Grain Size | 0.2 μm |
| Coating | AlTiCrSiN Multi-Element PVD Coating |
| High-Temperature Performance | Above approx. 1100°C |
| Hardened Steel Hardness | Up to 65 HRC |
| Cutting Methods | High-Speed, Dry, Semi-Dry, Coolant-Assisted |
| Suitable Materials | Hardened Steel, Mold Steel, Stainless Steel, Titanium Alloys, Nickel-Based Superalloys |
Why Choose the HS(200) Micro Diameter Ball Nose End Mill?
The HS(200) is designed for precision applications where small feature size and high material hardness make tool selection more demanding.
Its micro-diameter ball nose profile supports detailed machining, while the ultra-fine grain carbide and AlTiCrSiN coating provide the durability required for hardened materials up to 65 HRC.
The tool is also suited to finishing applications where surface quality is an important requirement.
Custom Micro Ball Nose End Mills
Precision applications may require specific tool diameters, ball radii, cutting lengths, or other tool geometry.
JimmyTool supports custom carbide ball nose end mills based on customer drawings, samples, and machining requirements.
Custom solutions can be developed according to tool dimensions, geometry, coating, carbide grade, and application conditions.
For a custom inquiry, provide the required tool diameter, workpiece material, hardness, machining conditions, quantity, and drawing or sample where available.
FAQ
What is a micro ball nose end mill used for?
A micro ball nose end mill is designed for small cavities, fine 3D contours, miniature features, and detailed surfaces where a conventional tool may be too large.
Can the HS(200) machine hardened steel up to 65 HRC?
Yes. The HS(200) is designed for hardened steel and mold steel applications up to 65 HRC.
Is the HS(200) suitable for precision finishing?
Yes. Its micro-diameter ball nose profile is suitable for detailed contouring and finishing where surface quality is important.
Can JimmyTool customize the HS(200)?
Yes. JimmyTool can manufacture custom carbide ball nose end mills based on drawings, samples, or specific machining requirements.
Request a Quote for HS(200)
Looking for a micro diameter ball nose end mill for precision mold machining, fine features, or hardened steel up to 65 HRC?
Send us your tool diameter, workpiece material, hardness, machining conditions, and required quantity.
For non-standard requirements, a drawing or sample can also be provided for review. JimmyTool can recommend a suitable HS(200) configuration or develop a custom micro ball nose end mill for your application.
