Ball nose cutter end mill

HNCarbide’s ball nose cutter end mill range is designed for precise 3D profiling, mold & die finishing and contour machining of steel, stainless steel, aluminum and cast iron. The strong carbide substrate and optimized ball profile help you achieve fine surface quality with stable tool life, even in complex cavities and deep pockets.

Each ball nose cutter end mill is ground on advanced CNC machines under strict ISO process control, ensuring accurate radius tolerance, smooth flute surfaces and reliable chip evacuation. This allows the ball nose end mill cutter to run at higher feeds and speeds while maintaining dimensional accuracy.

Our portfolio covers 1–12 mm diameters, 2–4 flutes, regular and long lengths, as well as dedicated ball nose cutter end mill solutions for aluminum, alloy steel and hardened steel. Coating, flute length and special radius can be customized so your ball nose end mill cutter matches specific machine, material and drawing requirements.

Our ball nose cutter end mill Product Range

HN55-B2 Read More HN55-B4 Read More HM-B2 Read More GM-B2 Read More HN65-B2 Read More HN65-B4 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.

Ball nose cutter end mill Product Details

55 HRC 2-flute ball nose cutter end mill

Our 55 HRC 2-flute ball nose cutter end mill is engineered for high-efficiency 3D contouring and profile machining in steels up to 55 HRC, including alloy steel, pre-hardened mold steel and tool steel. The tough carbide substrate and optimized ball radius provide stable cutting, fine surface finish and reliable tool life in deep cavities and complex shapes.

With two large-capacity flutes, this ball nose cutter end mill ensures smooth chip evacuation at high feed rates, making it ideal for semi-finishing and finishing work. Accurate radius tolerance and precision CNC grinding guarantee dimensional accuracy, so your ball nose end mill cutter runs consistently and delivers repeatable results across molds, dies and precision components.

Order Number:

HN55-B2

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.

Ball nose cutter end mill Dimensions & Technical Drawings

Our ball nose cutter end mill drawings clearly show key ball nose cutter end mill dimensions such as diameter, radius, flute length and overall length. This helps you confirm the right ball nose cutter end mill sizes for your CNC setup and machining depth before ordering.

FAQ

Which materials can your ball nose cutter end mill machine?

Our ball nose cutter end mill range covers aluminum, stainless steel, alloy steel, pre-hardened mold steel and hardened tool steel, depending on the series and coating. We can recommend the right ball nose end mill cutter grade according to your workpiece material and hardness.

How do I select the right size and radius of ball nose cutter end mill?

The diameter and radius of the ball nose cutter end mill should match the smallest feature and corner radius in your drawing. A smaller ball nose end mill cutter can reach fine details but is less rigid, while a larger size offers better stability and longer tool life.

Do you offer coated ball nose cutter end mills?

Yes. We supply ball nose cutter end mill tools with various coatings (such as TiAlN, AlTiN, nano and others) to improve wear resistance, heat resistance and surface finish. The right coating helps your ball nose end mill cutter run at higher speed and extend tool life.

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.

55 HRC 4-flute ball nose cutter end mill

Our 55 HRC 4-flute ball nose cutter end mill is built for high-precision finishing of alloy steels, pre-hardened mold steels and tool steels up to 55 HRC. The fine-grain carbide substrate and reinforced ball profile provide excellent edge strength, stable performance and consistent surface finish in 3D contouring, slotting and pocketing.

The 4-flute design of this ball nose cutter end mill offers higher feed capability and reduced vibration, while the polished flute and accurate radius tolerance ensure smooth chip evacuation and precise dimensions. Optional coatings and customized lengths are available so each ball nose end mill cutter can be matched to your specific machine, coolant condition and die & mold applications.