ZCC.CT ONHU060408-PF YBC302 Octagonal Milling Inserts for Steel
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ZCC.CT ONHU060408-PF YBC302 Milling Insert
16-Edge Octagonal Efficiency for Premium Steel Face Milling
Product Overview
The ZCC.CT ONHU060408-PF is a heavy-duty octagonal milling insert engineered for high-performance face milling. Utilizing the YBC302 CVD-coated grade, it is specifically optimized for ISO P20-P35 materials (Steel and Cast Steel). The PF chipbreaker features a positive geometry that reduces cutting forces, making it the ideal choice for finishing and semi-finishing operations where surface quality and tool longevity are critical.
Key Advantages
- ✔ 16 Cutting Edges: Double-sided octagonal design (8 edges per side) offers the lowest possible cost per edge.
- ✔ YBC302 CVD Coating: Exceptional wear resistance and toughness for stable cutting in medium-to-low speeds.
- ✔ PF Geometry: Positive rake angle ensures smooth chip flow and prevents built-up edge on steel workpieces.
Technical Specifications
Decoding ONHU060408-PF
Octagonal
0° Relief
Tolerance
Special
6.35mm L
4.76mm T
Finishing
| Feature | Metric (mm) | Imperial (ANSI) |
|---|---|---|
| Inscribed Circle (IC) | 12.7 mm | 0.500 in |
| Thickness (S) | 4.76 mm | 0.187 in |
| Corner Radius (RE) | 0.8 mm | 0.031 in |
Recommended Cutting Parameters (Steel)
| Material Group | Cutting Speed (Vc) | Feed per Tooth (fz) |
|---|---|---|
| Carbon Steel (< 200HB) | 180 - 280 m/min | 0.15 - 0.40 mm/z |
| Alloy Steel (200-350HB) | 120 - 220 m/min | 0.12 - 0.35 mm/z |
Compatible Face Milling Cutters:
FMP06 Series Face Mills (Octagonal Pocket)
Find Compatible Milling Bodies →Application Scenarios
- Face milling of large steel plates.
- Roughing and finishing of die and mold bases.
- General purpose steel structural components.
- Efficient machining of alloyed tool steels.
Machine Compatibility
- CNC Milling Machines (VMC/HMC).
- High-power machining centers.
- Standard FMP06 series tool holders.
ZCC.CT Steel Grade Comparison Matrix
| Grade | Application Range | Primary Feature |
|---|---|---|
| YBC302 (This) | P20 - P35 | High Toughness / Versatile Steel |
| YBC301 | P15 - P30 | Higher Speed Resistance |
| YBM253 | Stainless/Steel | Interrupted Cut Excellence |
Global CNC Machinist Feedback
⭐⭐⭐⭐⭐
"16 edges for this price? Unbeatable cost efficiency for our heavy steel plates."
— James R., USA 🇺🇸⭐⭐⭐⭐⭐
"Hervorragende Oberflächengüte bei legiertem Stahl. PF-Geometrie läuft sehr ruhig."
— Lukas M., Germany 🇩🇪⭐⭐⭐⭐⭐
"YBC302 grade is tough. We use it for semi-finishing and it holds the edge perfectly."
— Roberto G., Italy 🇮🇹⭐⭐⭐⭐⭐
"Perfect balance of speed and durability. Highly recommended for P-class materials."
— Hiroshi S., Japan 🇯🇵Frequently Asked Questions
Q: Why choose an octagonal milling insert like ONHU?
A: Octagonal inserts provide 16 cutting edges (8 per side), significantly reducing the cost-per-edge compared to square or round inserts.
Q: Is YBC302 suitable for dry machining?
A: Yes, the thick CVD coating provides excellent thermal insulation, making it very effective for dry face milling in steel.
Q: What does the PF chipbreaker signify?
A: PF stands for "Positive Finishing." It is a sharp, positive-rake geometry designed to minimize cutting pressure and improve surface finish.
Professional Tip: For octagonal inserts, ensure the milling cutter approach angle is set correctly to take advantage of the chip thinning effect, which allows for higher feed rates without increasing tool wear.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.