Micro End Mills

HNCarbide engineers micro end mills for jobs where precision and reach really matter – deep cavities, thin ribs, fine pockets and tiny features that standard tools can’t machine safely. With optimized neck geometry and high-rigidity carbide, our carbide micro end mills help control chatter, protect tight tolerances and deliver clean edges even when the tool sticks out far from the holder.

Backed by advanced CNC grinding and ISO-based inspection, we provide a targeted yet flexible range of long reach solutions: sharp micro cut end mills for slots and engraving, wear-resistant micro carbide end mills for hardened steels and alloys, and long reach micro ball nose end mills for smooth 3D surfaces in molds, dies and medical parts. Each tool is designed to balance stiffness, chip evacuation and tool life for reliable performance in real production.

As a dedicated micro end mills manufacturer, HNCarbide can support different setups with custom diameters, extended flute lengths, special coatings and tailored geometries for aluminum, stainless steel, titanium and more. Whether you run high-speed CNC machining or small-batch precision work, our micro end mills help you achieve stable processes, consistent finishes and fewer tool changes.

Our Micro End Mills Product Range

HN55-LNB2 Read More HN55-LNS2 Read More HN55-LNS4 Read More HN55-MLNB2 Read More HN65-LNB2 Read More HN65-MLNB2 Read More HN65-MLNS2 Read More

Simplify Complex Contours!

Leveraging advanced CNC grinding technology and strict ISO-compliant quality control, we ensure stable cutting performance, long tool life, and consistent batch-to-batch accuracy.

Micro End Mills Product Details

55HRC 2 flute ball Micro End Mills

HNCarbide’s 55HRC 2 flute ball micro end mills are designed for precise 3D profiling and fine surface finishing in steels up to 55HRC. With a tough carbide substrate and optimized ball nose geometry, these micro ball nose end mills provide smooth cutting, reliable chip evacuation and reduced risk of chipping at small diameters.

As high-performance carbide micro end mills, they are ideal for mold inserts, medical components, precision cavities and small radius blending. The 2-flute design gives you a good balance of rigidity and chip space for stable machining in hardened and pre-hardened steels, stainless steel and alloy materials.

Order Number:

HN55-LNB2

In-stock products, fast delivery.

RODS & PREFORMS

Grade HN40 is made from submicron WC powder, some speclal additlves added to optimize theproperties with good combination of hardness and toughness.

Its suitable for making drills and miling tools for machining stainless steel, tool steel and heat-resistingalloys.

Grade	Cobalt content %	Grain size	Density g/cm³	Hardness HRA	Hardness HV30	MPa Transverse rupture strength	MPa ·m1/2 Fracture toughness MPa ·m1/2
HN40	10	0.8	14.45	91.8	1,580	3,600	11.8

COATING

Scientific name	Composition	Physical properties	Features	Typical applications
TiSiN	Ti (titanium): main element, forms TiN nanocrystalline phase. Si (silicon): usually 6–10%, forms amorphous Si₃N₄ phase, refines grains and increases hardness. N (nitrogen): combines with Ti and Si to form a composite structure.	Colour: TiSiN coatings usually appear bronze or dark grey-bronze; exact colour depends on Si content, deposition process (such as PVD) and thickness (1–4 μm). Hardness: 34–42 GPa (≈3400–4200 HV). Friction coefficient: 0.3–0.6 (against steel). Temperature resistance: 1000–1200°C (oxidation resistance). Coating thickness: 1–5 μm (typically 2–3 μm). Deposition temperature: 200–400°C (suitable for carbide tools).	Ultra-high hardness: amorphous Si₃N₄ phase suppresses dislocation movement, giving much higher hardness than TiN (~23 GPa) and TiAlN (~35 GPa). High-temperature stability: suitable for dry cutting and high-speed machining (e.g. quenched steels HRC 60+). Anti-adhesion: reduces built-up edge when machining aluminium alloys, stainless steels and other sticky materials.	Tool coatings: drills, mills (especially suitable for PCB routers, tool life increased by 2–3 times). High-speed cutting of quenched steels, titanium alloys and high-nickel alloys. Mould strengthening: die-casting moulds and stamping dies, improving wear resistance. Industrial parts: piston rings and other high-temperature wear parts.

Micro End Mills Dimensions & Technical Drawings

Our Micro End Mills drawings clearly show keyMicro End Mills dimensions such as diameter, radius, flute length and overall length. This helps you confirm the right Micro End Mills sizes for your CNC setup and machining depth before ordering.

FAQ

What are micro end mills and when should I use them?

Micro end mills are small-diameter end mills designed for machining tiny features such as narrow slots, thin ribs, micro pockets and fine 3D details. They are commonly used in precision molds, electronic components, medical parts, watch and jewelry machining, and any application where conventional tools are too large or cannot reach.

What is the difference between square and ball micro end mills?

Square micro end mills have a flat end and are mainly used for slotting, side milling and machining sharp corners. Micro ball nose end mills feature a spherical tip and are ideal for 3D contouring, surface blending and machining small radii in molds and complex profiles. Many users combine both types in one process: square tools for roughing and ball tools for finishing.

What are the advantages of carbide micro end mills compared with HSS tools?

Compared with HSS, carbide micro end mills offer higher hardness, better hot wear resistance and improved rigidity. This allows higher cutting speeds, longer tool life and more stable performance in small diameters, especially in hardened steels and abrasive materials. For demanding precision work, carbide micro end mills are usually the first choice.

Do you offer non-standard / customized cutting tools?

Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.

Can I get free samples?

For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.

Do you support OEM and ODM service?

Yes.

OEM:Your logo and brand on tools, labels and boxes, with agreed MOQ.
ODM:We work with you to design or optimize tools for your market. NDAs can be signed to protect your projects and drawings.

Do you have a distributor / dealer support program? What support can I get?

Yes, for qualified distributors we provide a complete support package:

1.Market protection

Regional or customer protection based on sales targets, avoiding price wars among our partners.

2.Marketing support

Catalogs, brochures, product photos, technical data sheets, online materials.

For key partners, joint promotion, exhibitions and digital marketing support.

3.Stable supply

Safety stock for fast-moving items and forecast-based production.

Priority production and regular shipments to reduce stock-out risk.

4.Worry-free after-sales

Clear quality warranty policy, quick response to claims.

Replacement, credit or other solutions after confirmation of issues.

5.Technical support

Tool selection and cutting parameter advice.

Problem analysis for different materials and machines.

Online training, documents, and when possible, on-site support for key accounts.

55HRC 2 flute square Micro End Mills

HNCarbide’s 55HRC 2 flute square micro end mills are built for high-precision slotting, side milling and contouring in steels up to 55HRC. With a fine-grain carbide substrate and rigid shank design, these carbide micro end mills keep runout low, control vibration and help you maintain tight dimensional tolerance on very small features.

The sharp 2-flute geometry offers clean cutting and efficient chip evacuation, making these tools ideal for miniature pockets, thin walls, micro steps and detailed corners. As robust micro carbide end mills, they perform reliably in hardened and pre-hardened steels, stainless steel and alloy steels used in molds, dies, precision components and medical parts.

As a specialized micro end mills manufacturer, HNCarbide can provide flexible options in diameter, flute length, overall length and coatings. Whether you need stable tools for daily production or small-lot micro cut end mills for fine finishing work, our 55HRC 2 flute square micro end mills help you achieve smooth surfaces, longer tool life and consistent results on your micro machining projects.