8-9.9mm 3xD Carbide Coolant Through Drills carbide end milll
Price shown is a starting point. Contact us for a precise quote based on your requirements.
BEYOND HRC60 3D Internal Coolant Solid Carbide Drill Bit 8–9.9mm – 140° Point Angle Extra Hard Twist Drill
Product Overview
The BEYOND HRC60 3D Internal Coolant Drill Bit is made from ultra-fine grain solid tungsten carbide and engineered for high-speed, high-precision drilling. Designed with 140° point angle for smooth centering and internal coolant holes for efficient chip evacuation and heat reduction.
Key Features
- 3×D flute length ratio for stability and precision in deep-hole drilling.
- 140° large point angle reduces thrust and enhances accuracy.
- Internal coolant design improves cooling, extends tool life, and prevents chip blockage.
- Optimized for CNC machining centers, drilling machines, and precision equipment.
- Manufactured from HRC60-grade solid carbide with advanced nano-coating for extended durability.
Application Materials
- Hardened Steel (≤HRC60)
- Alloy Steel
- Tool Steel
- Cast Iron / Ductile Iron
- Stainless Steel
Specifications (8–9.9mm)
| Diameter (mm) | Flute Length (L1) | Total Length (L) | Shank Diameter (D) | Point Angle | Cooling |
|---|---|---|---|---|---|
| 8.0 | 33 | 80 | 8 | 140° | Internal Coolant |
| 8.5 | 35 | 85 | 8 | 140° | Internal Coolant |
| 9.0 | 38 | 90 | 9 | 140° | Internal Coolant |
| 9.3 | 40 | 93 | 9 | 140° | Internal Coolant |
| 9.5 | 42 | 96 | 9 | 140° | Internal Coolant |
| 9.9 | 45 | 100 | 10 | 140° | Internal Coolant |
Recommended Cutting Parameters
| Material | Cutting Speed (m/min) | Feed Rate (mm/rev) | Coolant |
|---|---|---|---|
| Carbon Steel | 80–120 | 0.10–0.20 | Internal / External |
| Alloy Steel | 60–90 | 0.08–0.18 | Internal |
| Stainless Steel | 50–80 | 0.06–0.16 | Internal |
| Cast Iron | 70–100 | 0.08–0.20 | Optional |
Why Choose BEYOND
- Precision-ground solid carbide body for rigidity and accuracy.
- Internal coolant channels for efficient chip evacuation.
- High hardness and heat resistance suitable for continuous cutting.
- Trusted brand for professional CNC tool solutions.
Keywords
internal coolant carbide drill, 3D solid carbide twist drill, BEYOND carbide drill bit, HRC60 carbide drill, 140 degree point angle drill, 8mm carbide drill bit, 9mm CNC drill bit, coolant hole twist drill for alloy steel, high hardness carbide drill for stainless steel
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.