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Xem trên YouTube4-Flute · TiSiN · R7.5mm Ball · HRC55 · Standard Reach
15mm 4-Flute TiSiN Solid Carbide Ball Nose End Millfor HRC55 3D Contouring & Mould Work
The 4-flute TiSiN ball nose end mill is engineered for finishing passes and semi-finish Z-level contouring in steel and stainless steel up to HRC55. More cutting edges reduce per-tooth chip load, enabling higher feed rates while maintaining lower surface scallop height (Ra). TiSiN coating withstands the elevated temperatures of continuous 3D contouring on hardened mould surfaces without edge chipping.
R7.5mm BallD1 15mmL2 45mmD2 16mmOAL 100mm4 FlutesTiSiNHRC55Standard ReachMOQ 1 pc
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116,99 US$
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Dựa trên chi phí tồn kho que tính đến 2026-07-10. Báo giá cuối cùng có thể khác nhau.
R7.5mm 4F TiSiN Ball Nose EM
L2 45mm · D2 16mm · OAL 100mm
Standard Reach · HRC55
✓ Factory direct pricing
✓ MOQ 1 piece, ships 1–5 days
✓ Custom ball radii available
Full Dimensions
Technical Specifications
| Ball Radius (R) | 7.5 mm |
| Cutter Diameter (D1 h7) | 15 mm |
| Flute Length (L2) | 45 mm |
| Shank Diameter (D2 h6) | 16 mm |
| Overall Length (L1) | 100 mm |
| Number of Flutes | 4 |
| End Geometry | Ball Nose (Spherical) |
| Coating | TiSiN Titanium Silicon Nitride |
| Max Material Hardness | HRC55 |
| Reach Category | Standard (D2/L1 = 0.160) |
| 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 |
TiSiN · 4 Flute · HRC55
Ball R
7.5mm
D1 h7
15mm
L2
45mm
D2 h6
16mm
L1
100mm
Reach
Standard
Where This Tool Excels
R7.5mm TiSiN 4F — Recommended Applications
- ▸Injection mould parting surface contouring
- ▸Wind turbine blade mould 3D finishing
- ▸Structural aerospace component contouring
- ▸Large forging die rough and semi-finish passes
Machining Tip: R7.5mm produces wide effective cutting zone. In HRC55 hardened steel, use 10–20% D1 step-over for semi-finish; this gives scallop < 0.05mm. At this diameter, ensure minimum wall thickness of 6mm for workholding rigidity, or use vibration-damping toolholder.
3D Finishing Reference
Scallop Height vs Step-Over — R7.5mm
Residual scallop height (cusps) between adjacent tool paths, calculated for R7.5mm ball nose:
| Step-Over | Step-Over mm | Scallop Height (µm) | Typical Ra (µm) |
|---|---|---|---|
| 2% D1 | 0.30 | 1.5 | ≈ 0.30 |
| 5% D1 | 0.75 | 9.4 | ≈ 1.88 |
| 8% D1 | 1.20 | 24.0 | ≈ 4.81 |
| 10% D1 | 1.50 | 37.6 | ≈ 7.52 |
| 15% D1 | 2.25 | 84.9 | ≈ 16.97 |
| 20% D1 | 3.00 | 151.5 | ≈ 30.31 |
h = R − √(R² − (ae/2)²). Actual Ra depends on feed rate, chip load, and material.
ISO PISO MISO K
Coating Performance
TiSiN — Why It Works for Ball-End Machining
- ▸TiSiN hardness > 3,500 HV — superior to TiAlN on ball-end profiles
- ▸Low friction reduces heat at ball-tip during 3D contouring
- ▸Suitable for dry, MQL, or flood coolant environments
- ▸4-flute: lower scallop height per pass for finishing operations
Related Ball Nose Variants
Same Size in Other Coatings
Order R7.5mm 4-Flute TiSiN Ball Nose Today
Factory direct. MOQ 1 piece. Pricing confirmed within 4 hours.
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