CNC grinding: end mills, drills & special cutters
See how we use a CNC grinder to make carbide end mills, drills and special cutters.
Watch on YouTube2-Flute · Uncoated · R10mm Ball · Aluminium · Standard Reach
20mm 2-Flute Uncoated Solid Carbide Ball Nose End Millfor Aluminium & Non-Ferrous 3D Surface Machining
Uncoated (bright-polished) ball nose end mills with 2 flutes are specifically optimised for high-speed 3D contouring in aluminium alloys, copper, graphite, and soft non-ferrous materials. The mirror-polished flute surface prevents built-up edge (BUE) that can degrade surface finish in soft metals. Large chip gullets ensure complete swarf evacuation even at spindle speeds above 20,000 RPM. Ideal for electrode machining (EDM graphite) and aluminium aerospace structural components.
R10mm BallD1 20mmL2 45mmD2 20mmOAL 100mm2 FlutesUncoatedNon-FerrousStandard ReachMOQ 1 pc
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Reference price
$181.02
Ref. factory price (USD)
Based on rod stock cost as of 2026-07-10. Final quotation may differ.
R10mm 2F Uncoated Ball Nose EM
L2 45mm · D2 20mm · OAL 100mm
Standard Reach · Aluminium
✓ Factory direct pricing
✓ MOQ 1 piece, ships 1–5 days
✓ Custom ball radii available
Full Dimensions
Technical Specifications
| Ball Radius (R) | 10 mm |
| Cutter Diameter (D1 h7) | 20 mm |
| Flute Length (L2) | 45 mm |
| Shank Diameter (D2 h6) | 20 mm |
| Overall Length (L1) | 100 mm |
| Number of Flutes | 2 |
| End Geometry | Ball Nose (Spherical) |
| Coating | Uncoated Bright polished |
| Max Material Hardness | N/A (non-ferrous optimised) |
| Reach Category | Standard (D2/L1 = 0.200) |
| Substrate | K10/K20 Ultra-Fine Grain Carbide |
| Shank Tolerance | h6 |
| MOQ | 1 piece |
| Lead Time (standard) | 1–5 business days |
| Lead Time (custom) | 5–15 business days |
Uncoated · 2 Flute · Aluminium
Ball R
10mm
D1 h7
20mm
L2
45mm
D2 h6
20mm
L1
100mm
Reach
Standard
Where This Tool Excels
R10mm Uncoated 2F — Recommended Applications
- ▸Heavy mould base 3D contouring
- ▸Large stamping and forming die profiling
- ▸Marine propeller and impeller blade finishing
- ▸Power generation turbine component contouring
Machining Tip: R10mm generates significant cutting forces in aluminium alloy. Verify spindle power ≥ 10 kW for sustained 3D contouring at full engagement. Use high-pressure coolant or MQL for thermal management. Preferred tool path: scallop finishing (constant cusps) over parallel raster.
3D Finishing Reference
Scallop Height vs Step-Over — R10mm
Residual scallop height (cusps) between adjacent tool paths, calculated for R10mm ball nose:
| Step-Over | Step-Over mm | Scallop Height (µm) | Typical Ra (µm) |
|---|---|---|---|
| 2% D1 | 0.40 | 2.0 | ≈ 0.40 |
| 5% D1 | 1.00 | 12.5 | ≈ 2.50 |
| 8% D1 | 1.60 | 32.1 | ≈ 6.41 |
| 10% D1 | 2.00 | 50.1 | ≈ 10.03 |
| 15% D1 | 3.00 | 113.1 | ≈ 22.63 |
| 20% D1 | 4.00 | 202.0 | ≈ 40.41 |
h = R − √(R² − (ae/2)²). Actual Ra depends on feed rate, chip load, and material.
ISO N
Coating Performance
Uncoated — Why It Works for Ball-End Machining
- ▸Mirror-polished flute — zero aluminium adhesion on ball profile
- ▸Eliminates built-up edge (BUE) during high-speed aluminium contouring
- ▸Large chip gullets for clean swarf evacuation at 20,000+ RPM
- ▸Ideal for graphite electrode and EDM insert 3D profiles
- ▸Use with air blast or light oil mist — no flood coolant needed
Related Ball Nose Variants
Same Size in Other Coatings
Same Ball Radius, Different Reach
R10mm Uncoated · 2 Flute · Aluminium — Other Flute Lengths
Order R10mm 2-Flute Uncoated Ball Nose Today
Factory direct. MOQ 1 piece. Pricing confirmed within 4 hours.
FROM OUR WORKSHOP
Watch us grind and inspect our tools
Two videos filmed in our workshop: CNC tool grinding and dimensional inspection.
Measuring carbide end mills at 0.001 mm
Watch our ZOLLER inspection process for precision carbide end mills.
Watch on YouTube