1. INSIGHT Solid Carbide Internal Cooling Drill Picture

INSIGHT internal coolant drill (also known as a through-coolant drill or center-cooling drill) is a cutting tool 

designed to deliver coolant directly to the cutting zone through internal channels. 

It significantly enhances machining efficiency, extends tool life, and improves hole quality. 

Below are its key functions, advantages, and applications.

INSIGHT Functions

1. Internal Coolant Delivery

   - Coolant flows through axial or helical channels inside the drill, directly cooling the cutting edges.  

2. Efficient Chip Evacuation  

   - High-pressure coolant flushes chips out of the hole, preventing clogging (especially in deep-hole drilling).  

3. Lubrication of Cutting Zone

   - Reduces friction between the tool and workpiece, lowering cutting forces.  

4. High-Precision Machining

   - Ensures tight tolerances and superior surface finish (Ra ≤ 1.6 μm) due to stable cooling and chip removal. 

2. INSIGHT Machine Lathe Tungsten Internal Cooling Drill Advantages

Internal Cooling Drill Tool Advantages

1. Extended Tool Life

   - Direct cooling reduces thermal wear, increasing tool durability by **30–50%**.  

2. Higher Productivity 

   - Enables (20–40% faster) cutting speeds and feed rates compared to conventional drills.  

3. Deep-Hole Drilling Capability  

   - Solves heat dissipation and chip evacuation issues in deep holes (depth-to-diameter ratio > 10:1).  

4. Improved Surface Quality

   - Minimizes burrs and ensures smoother hole walls.  

5. Reduced Coolant Consumption

   - More efficient than external coolant methods, reducing waste and improving workplace cleanliness.  

6. Versatility

   - Some internal coolant drills support milling, reaming, and other combined operations.  

3. INSIGHT Machine Lathe Tungsten Internal Cooling Drill Design

Selection Guidelines

1. Coolant Pressure: ≥ 3 MPa recommended for optimal performance.  

2. Drill Material: Coated carbide (e.g., tungsten carbide) for hard materials.  

3. Machine Compatibility: Requires a lathe/machining center with through-spindle coolant (TSC) capability.  

Proper selection of cutting parameters (RPM, feed rate, coolant pressure) ensures maximum efficiency.