Designed for precision flat-bottom hole machining, this solid carbide drill features a 180° flat-bottom point, center-cutting geometry, imported MG grade 0.8 μm carbide, controlled edge preparation, and material-specific coating options. It helps reduce drill walking, improve entry stability, and produce cleaner, flatter hole bottoms on flat, inclined, curved, interrupted, and thin-wall surfaces.
The flat bottom carbide drill is designed for drilling applications where a conventional pointed drill cannot provide the required hole-bottom shape, entry stability, or surface control.
Standard twist drills normally leave a conical hole bottom because of their pointed geometry. By comparison, the 180° cutting geometry of a flat bottom drill produces a substantially flatter hole bottom, making it suitable for blind holes, counterbores, bolt-seat preparation, and other applications where remaining bottom material must be minimized.
The flat-bottom geometry also supports more stable drilling on inclined, curved, interrupted, and uneven surfaces. Its center-cutting design helps reduce drill walking and lateral deflection during entry, while the rigid solid carbide body supports dimensional consistency and repeatable hole positioning.
This drill is manufactured from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content. Controlled point grinding, edge preparation, Walter Helicheck Plus inspection, and 300x magnification checks help maintain cutting edge quality and geometric consistency.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | Flat Bottom Carbide Drill | Alternative Name | Flat Bottom Drill Bit / 180 Degree Carbide Drill |
| Drill Type | Solid Carbide Flat-Bottom Drill | Point Geometry | 180° Flat-Bottom Point |
| Flute Design | Two-Flute Design | Carbide Material | Tungsten Carbide |
| Edge Preparation Control | ±0.003 mm | Coating | Custom Coating |
| Inspection Equipment | German Walter Helicheck Plus | Workpiece Material | Steel, stainless steel, cast iron, aluminum, titanium alloy, and selected non-ferrous materials |
| Coolant Type | Internal Coolant / External Coolant Available | Main Application | Flat-bottom blind holes, inclined surfaces, curved surfaces, intersecting holes, counterboring, and precision hole preparation |
| Service | Regrinding and Customization Available | Size Availability | Standard and customized diameters available |
Key Features
The 180° point geometry produces a substantially flatter hole bottom than a conventional pointed drill.
This makes the drill suitable for blind holes, counterbores, bolt seats, spring seats, and other applications where a conical hole bottom is not acceptable.
The center-cutting geometry allows the drill to cut from the center of the tool rather than relying only on the outer cutting edges.
It helps improve entry stability, reduce drill walking, and support more accurate hole positioning on challenging surfaces.
The drill is manufactured from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content.
The fine carbide structure helps provide the rigidity, edge strength, and dimensional stability required for flat-bottom drilling and interrupted entry conditions.
The two-flute structure provides chip space while maintaining sufficient drill-body rigidity.
Optimized flute surfaces help remove chips from the cutting area and reduce chip accumulation, friction, and hole-wall damage.
Flat bottom carbide drills are suitable for CNC machining centers, drilling machines, automated production lines, and precision component manufacturing. They are particularly useful when the hole bottom shape, entry surface condition, positional accuracy, and machining stability are more demanding than standard drilling applications.
Send us your material and hole requirements. Our team will recommend the right drill solution.
Landun CNC Tool is a carbide drill manufacturer focused on precision solid carbide drills and custom carbide drill solutions, supported by advanced grinding, strict inspection, and consistent edge preparation.
Production Facility
Geometry Accuracy Control
Edge Inspection Magnification
Edge Passivation Control
Our carbide drills are ground on German WALTER 5-axis grinding machines for sharp cutting edges, stable accuracy, and smooth drilling performance.
We use WALTER HELICHECK PLUS for contour inspection, keeping profile and radius control within 3 μm for reliable geometric precision.
Each carbide drill is inspected at 300x magnification to check edge quality and avoid chipping or saw-tooth defects before shipment.
Manual drill point honing and automatic rubber-bonded diamond abrasive polishing help improve tool life and control edge consistency within ±0.003 mm.
Common Questions
A flat bottom carbide drill is a solid carbide drilling tool with a 180° point geometry. It is designed to produce a flatter hole bottom than a conventional pointed twist drill.
A standard drill normally has a pointed tip and leaves a conical bottom in a blind hole. A flat bottom drill uses a 180° point geometry to produce a substantially flatter hole bottom.
Yes. The flat-bottom and center-cutting geometry helps improve entry stability on inclined surfaces and reduces drill walking compared with many conventional pointed drills.
Yes. Flat bottom carbide drills can be used on curved or cylindrical surfaces when machine rigidity, tool holding, and cutting parameters are properly controlled.
Yes. It can be used for cross-hole and intersecting-hole applications where the drill enters or exits through an existing hole. The final geometry should be selected according to the interruption and side-load conditions.
It can replace an end mill in some axial flat-bottom hole or counterbore applications. However, it is primarily a drilling tool and is not intended for general side milling or heavy lateral cutting.
Yes. Internal coolant and external coolant versions can be produced according to drill diameter, hole depth, workpiece material, and machine configuration.
Yes. Diameter, flute length, shank diameter, overall length, coolant channel, coating, and other geometric details can be customized according to drawings or samples.
The 180° geometry produces a substantially flat bottom. However, the actual result may still be affected by center geometry, drill runout, edge condition, material behavior, and machining parameters.
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