8D HRC65 Internal Coolant Solid Carbide Drill 11.0–12.9mm carbide end milll
Price shown is a starting point. Contact us for a precise quote based on your requirements.
BEYOND HRC65 8D Internal Coolant Solid Carbide Drill (11.0–12.9mm)
BEYOND HRC65 8D Solid Carbide Drills are designed for deep-hole, high-efficiency drilling in hardened and high-strength materials. Made from premium micro-grain tungsten carbide with advanced coating, these drills deliver exceptional wear resistance, heat stability, and long service life.
Features
- High hardness up to HRC65 – Ideal for hardened steel, die steel, and alloy steel.
- 8D deep-hole design (8×D length-to-diameter ratio) – Ensures stable and accurate drilling in deep cavities.
- Internal coolant holes – Improve chip evacuation and cooling during high-speed machining.
- Optimized cutting edge geometry – Reduces cutting force and prevents edge chipping.
- TiAlN / Nano coating – Provides superior oxidation resistance and longer tool life.
Recommended Materials
Suitable for machining hardened steel (≤65HRC), die steel, cast iron, alloy steel, and stainless steel.
Product Specifications
| Model | Drill Diameter (mm) | Flute Length (mm) | Total Length (mm) | Shank Diameter (mm) |
|---|---|---|---|---|
| BEYOND-HRC65-8D-11.0 | 11.0 | 114 | 163 | 12 |
| BEYOND-HRC65-8D-11.1 | 11.1 | 114 | 163 | 12 |
| BEYOND-HRC65-8D-11.2 | 11.2 | 114 | 163 | 12 |
| BEYOND-HRC65-8D-11.3 | 11.3 | 114 | 163 | 12 |
| BEYOND-HRC65-8D-11.4 | 11.4 | 114 | 163 | 12 |
| BEYOND-HRC65-8D-11.5 | 11.5 | 114 | 163 | 12 |
| BEYOND-HRC65-8D-11.6 | 11.6 | 114 | 163 | 12 |
| BEYOND-HRC65-8D-11.7 | 11.7 | 114 | 163 | 12 |
| BEYOND-HRC65-8D-11.8 | 11.8 | 114 | 163 | 12 |
| BEYOND-HRC65-8D-11.9 | 11.9 | 114 | 163 | 12 |
| BEYOND-HRC65-8D-12.0 | 12.0 | 114 | 163 | 12 |
| BEYOND-HRC65-8D-12.1 | 12.1 | 133 | 182 | 14 |
| BEYOND-HRC65-8D-12.2 | 12.2 | 133 | 182 | 14 |
| BEYOND-HRC65-8D-12.3 | 12.3 | 133 | 182 | 14 |
| BEYOND-HRC65-8D-12.4 | 12.4 | 133 | 182 | 14 |
| BEYOND-HRC65-8D-12.5 | 12.5 | 133 | 182 | 14 |
| BEYOND-HRC65-8D-12.6 | 12.6 | 133 | 182 | 14 |
| BEYOND-HRC65-8D-12.7 | 12.7 | 133 | 182 | 14 |
| BEYOND-HRC65-8D-12.9 | 12.9 | 133 | 182 | 14 |
Advantages
- Excellent surface finish for precision holes
- Reduces tool change frequency and machining cost
- Stable cutting performance under high-speed and dry conditions
- Designed for CNC machining centers and deep-hole drilling applications
Available Sizes
11.0mm / 11.1mm / 11.2mm / 11.3mm / 11.4mm / 11.5mm / 11.6mm / 11.7mm / 11.8mm / 11.9mm / 12.0mm / 12.1mm / 12.2mm / 12.3mm / 12.4mm / 12.5mm / 12.6mm / 12.7mm / 12.9mm
Keywords & Applications
Keywords: HRC65 carbide drill, 8D deep hole drill, internal coolant drill, solid carbide drill for hardened steel, 8xD long drill bit, BEYOND carbide drill, deep hole drilling tool, high precision CNC drill.
Applications: CNC machining, mold manufacturing, automotive parts, aerospace components, precision toolmaking.
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.