High Precision Micro Diameter Tungsten Carbide Rods with Coolant Holes for Advanced Cutting Tools
Brand Name : JINXIN
Place of Origin : CHINA
MOQ : 100PCS
Packaging Details : COMMON PACKAGE
Delivery Time : 15 days
Supply Ability : 10000 PCS/MONTH
Matierial : Tungsten carbide、Cermet
Grade : YL10.2 /Cermet
Type : Ultrafine / Submicron
Application : Medical & Dental Instruments
Grain Size : Submicron / Fine Grain
Our micro diameter tungsten carbide rods with coolant holes are specifically engineered for high-performance cutting tools that require efficient heat control and chip evacuation. These precision carbide rods with internal coolant channels are widely used in micro drills, micro end mills, deep-hole tools, and high-speed CNC machining applications.
Our micro diameter tungsten carbide rods with coolant holes are specifically engineered for high-performance cutting tools that require efficient heat control and chip evacuation. These precision carbide rods with internal coolant channels are widely used in micro drills, micro end mills, deep-hole tools, and high-speed CNC machining applications.
Compared with solid carbide rods, carbide rods with coolant holes significantly enhance cooling efficiency by delivering coolant directly to the cutting edge. This reduces cutting temperature, minimizes tool wear, and improves machining stability, especially in micro diameter applications where heat accumulation can quickly lead to tool failure.
Manufactured using ultra-fine and submicron tungsten carbide powder, our rods feature a dense and uniform microstructure. Through advanced extrusion forming, HIP sintering, and precision grinding processes, we ensure high concentricity of holes, consistent wall thickness, and superior mechanical properties.
Key Features
Diameter range: Ø0.5 mm – Ø6.0 mm
Hole types: Single hole / Double hole / Helical coolant holes
High precision hole positioning and concentricity
Tolerance: h5 / h6 / custom tolerance available
Surface finish: Ground / Polished (Ra ≤ 0.2 μm)
Hardness: HRA 91 – 94
Excellent wear resistance and toughness
Stable internal coolant channel structure
Suitable for high-speed and deep-hole machining
Technical Advantages of Coolant Hole Design
The integration of internal coolant channels provides several critical benefits:
Efficient Heat Dissipation
Coolant is delivered directly to the cutting zone, preventing overheating and thermal deformation.Improved Chip Evacuation
High-pressure coolant flow helps remove chips efficiently, avoiding clogging in micro tools.Extended Tool Life
Reduced friction and heat lead to longer tool service life and lower replacement frequency.Enhanced Machining Accuracy
Stable cutting temperature ensures dimensional accuracy and surface quality.
Available Specifications
| Diameter (mm) | Hole Type | Length (mm) | Tolerance | Application |
|---|---|---|---|---|
| 0.5 – 2.0 | Single / Double | 20 – 50 | h5 | Micro drills |
| 2.0 – 4.0 | Double Hole | 30 – 100 | h6 | End mills |
| 4.0 – 6.0 | Double / Helical | 50 – 330 | h6 | General tools |
👉 Full customization available for hole diameter, spacing, helix angle, and special designs
Applications
Micro drilling tools with internal coolant
High-speed CNC cutting tools
Deep-hole machining tools
Precision milling and slotting tools
Aerospace and automotive components
Material Grades
| Grade | Grain Size | Hardness (HRA) | TRS (MPa) | Application |
|---|---|---|---|---|
| K05 | Ultra-fine | 93.5 | 3800 | Micro drills |
| K10 | Submicron | 92.5 | 4000 | End mills |
| K20 | Fine | 91.5 | 4200 | General tools |
✔ Available in 100% virgin carbide or cost-effective recycled carbide
Manufacturing Advantages
Advanced extrusion technology for hole consistency
Precision hole alignment control system
High-density sintering with HIP process
Strict quality inspection standards
Stable batch production capability
Call to Action
👉 Contact us now for custom coolant hole design, free samples, and fast quotation within 24 hours
