BB Flat Bottom Drill Bit Long Length 2mm-12mm Carbide Hole Drilling Tool BK2055 BL2060

Flat Bottom Drill

A-Angle Spiral Groove

Corrosion-Resistant / Not Easy to Oxidize
The A-angle geometry reduces cutting forces, expedites chip flow, enhances structural rigidity, and provides superior vibration damping, minimizing tool chipping and extending tool life.

Edge Nano Coating

Extended Lifespan, Reduced Costs
Advanced Multi-Coating Technology: Enhances Milling Cutter Performance, Ensuring Exceptional Wear Resistance and Extended Tool Life for Maximum Cost Savings.
BK2055:Black Titanium Coating
BL2060：Blue Nano-Coating

180-Degree Flat-Head Edge

No Deflection, Small Hole Expansion
edge Passivation Treatment, Resulting in Higher Surface Finish of the Tool, While Enhancing Rigidity and Sharpness for Smoother Cutting

A Drill Bit That Can Be Used for a Variety of Machining Operations

Capable of handling a variety of machining conditions such as counterbores, angled surfaces, and cross holes.
Angled Machining
Curved Through-Hole Machining
Special Position Counterbore Machining
Counterbore Machining
Exit surface Machining
Exit Bevel Machining
Thin Plate Through- Hole Machining
Curved Counterbore Machining
Cross-Hole Machining
Pilot Hole Machining
Correcting Off-Center Holes
Semi-Hole Machining

Solid Cemented Carbide

High Hardness High Cutting Performance
Increase Lifespan 2-3 Times
Utilizing micro-grain carbide substrate, it possesses enhanced wear resistance and strength, specifically designed for high-hardness high-speed cutting applications.

Hardened By Quenching

High Precision Vibration Resistance
High Temperature Quenching
Good Quenching Penetration，Resistant To Multiple Impacts
Excellent Low Temperature Impact Toughness，Sturdy And Durable，
Can Improve Cutter Head Service Life And Vibration Resistance

Universal Round Shank Design

User-Friendly, Portable
The handle has a chamfered design, making it easier to clamp

The Differences in Use Between Flat Bottom Drills/ Conventional Drill Bits/and End Mills

Cutting Tools：
Hole Bottom Shape
Flat-Bottomed Drilling
non-flat-Bottomed Drilling
Lateral Feed

Wave-Crescent Flat Bottom Drill：
Convex (180°) 、Basic Flat Bottom (Concave)
Universal Drill Bit A Feed of About 1/2
Highly Suitable (Suggested Within 3D)
Not Available

Conventional Drill Bit：
Convex (140°)、 (concave)
Highly Suitable
Not Available (May Break)

End Mill：
Convex (2-3° Medium low)、(convex)、Not Used for Bottom Hole Machining
General
Highly Suitable

Machining Finish Comparison High Finish Comparison

The Machining Finish is Twice That of a Conventional Drill Bit
Wave-Crescent Flat Bottom Drill
Conventional Drill Bit
Exit Side Burrs

Applicable Materials

Born for Metal Drilling
Suitable for stainless steel, die steel, sheet steel, etc.

Applicable Machines

Drilling Equipment
Machining Center
Engraving Machine