High Precision Micro Diameter Tungsten Carbide Rods with Coolant Hole
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 hole are specially designed for high-performance micro cutting tools, including PCB drills, micro end mills, micro reamers, and medical precision tools. These carbide rods with internal coolant holes significantly improve heat dissipation, chip evacuation, and tool life, especially in high-speed and deep-hole machining applications. Manufactured using ultra-fine grain tungsten carbide powder, our rods ensure excellent wear resistance, superior hardness, and outstanding dimensional accuracy, making them the ideal choice for demanding industries such as electronics, aerospace, and medical machining.
Key Features of Micro Carbide Rods with Coolant Hole
Ultra Micro Diameter Range: Ø0.5 mm – Ø6.0 mm
Single Hole / Double Hole Available
High Precision Hole Positioning
Tolerance: h5 / h6
Surface Finish: Ground / Polished / Centerless grinding
High Hardness: HRA 91 – 94
Excellent Wear Resistance & Toughness
Stable Internal Coolant Channel Structure
Suitable for High-Speed CNC Machining
Why Choose Carbide Rods with Coolant Holes
Compared with solid rods, tungsten carbide rods with coolant holes provide:
Better cooling performance
Faster chip removal efficiency
Reduced tool breakage risk
Longer tool service life
Improved machining precision
Especially suitable for micro diameter cutting tools, where heat concentration is critical.
Available Specifications
| Diameter (mm) | Hole Type | Length (mm) | Tolerance | Application |
|---|---|---|---|---|
| 0.5 – 2.0 | Single / Double | 20 – 50 | h5 | PCB drills |
| 2.0 – 4.0 | Double Hole | 30 – 100 | h6 | Micro end mills |
| 4.0 – 6.0 | Double Hole | 50 – 330 | h6 | General cutting tools |
👉 Customized hole diameter, spacing, and helix angle available upon request
Material Grades for Micro Carbide Rods
| Grade | Grain Size | Hardness (HRA) | TRS (MPa) | Recommended Application |
|---|---|---|---|---|
| K05 | Ultra-fine | 93.5 | 3800 | PCB micro drills |
| K10 | Submicron | 92.5 | 4000 | Micro end mills |
| K20 | Fine | 91.5 | 4200 | General machining |
✔ Support both virgin carbide material and recycled carbide options (cost-effective solution available)
Applications of Carbide Rods with Coolant Hole
PCB drilling tools
Micro end mills and slotting tools
Precision engraving tools
Medical surgical instruments
Aerospace micro machining components
Mold and die precision parts
Manufacturing Advantages
100% high-quality tungsten carbide raw materials
Advanced extrusion + sintering technology
Strict hole alignment control
Precision centerless grinding process
Consistent microstructure and density
Full inspection before shipment
Customization Capability
We provide full OEM / ODM services, including:
Custom diameter & length
Single hole / double hole / special hole design
Helical coolant holes
Surface finishing options
Grade selection based on application
Packaging & Delivery
Standard packaging: Plastic tube + protective carton
Delivery methods: DHL / FedEx / Air / Sea freight
Lead time: 7–15 days (standard sizes)
FAQ
Q1: What is the advantage of double coolant holes?
A: Double holes provide more balanced cooling and chip evacuation, especially for high-speed cutting tools.
Q2: Do you support small diameter holes like below 1mm?
A: Yes, we specialize in ultra micro diameter carbide rods with precision hole control.
Q3: Which material is better, virgin or recycled carbide?
A: For micro rods, virgin carbide is strongly recommended for better performance and consistency.
