Designed for accurate hole positioning, 90° chamfering, shallow countersinking, and controlled hole-entry preparation, this solid carbide spot drill combines a short rigid cutting structure, imported MG grade 0.8 μm carbide, symmetrical 90° point geometry, controlled cutting-edge preparation, and material-specific coating options. It helps reduce drill walking, improve feature consistency, and produce clean 90° chamfers and countersinks in CNC machining applications.
The carbide center drill is designed to produce an accurate center hole consisting of a small pilot hole and a 60° conical center seat in one machining operation.
Center holes are commonly used on shafts, rods, pins, spindles, and rotating components that will be supported between lathe centers or require a precise reference for subsequent turning, cylindrical grinding, drilling, measurement, or assembly.
Compared with a simple 60° spot drill, a center drill includes a smaller pilot cutting section ahead of the larger conical cutting section. The pilot establishes the center-hole depth, while the 60° section produces the contact surface used for positioning or center support.
Accurate alignment between the pilot diameter and the 60° center seat is essential. Poor concentricity, uneven cutting edges, incorrect pilot depth, or surface damage may affect workpiece support, rotational accuracy, and the quality of later machining operations.
The short and rigid carbide structure helps reduce tool deflection and center-hole movement during initial contact. The integrated geometry allows the pilot and conical seat to be produced on the same tool axis, improving positional consistency compared with machining the two features separately.
This center drill is manufactured from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content. German Walter 5-axis grinding, controlled edge preparation, Walter Helicheck Plus measurement, and 300x cutting-edge inspection help maintain pilot diameter accuracy, point symmetry, center-seat geometry, and cutting-edge quality.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | Carbide Center Drill | End Configuration |
|
| Drill Type | Solid Carbide Combination Center Drill | Point Angle | 60° included angle |
| Main Geometry | Small pilot drill combined with a 60° center-seat section | Carbide Material | Tungsten Carbide |
| Cutting Design | Center-cutting symmetrical point | Coating | Custom Coating |
| Center-Seat Geometry | Standard 60° or customized profile | Workpiece Material | Steel, stainless steel, cast iron, aluminum, titanium alloy, and selected non-ferrous materials |
| Coolant Type | Internal Coolant / External Coolant Available | Main Application | Shafts, rods, pins, spindles, rotating components, and precision mechanical parts |
| Service | Regrinding and Customization Available | Size Availability | Standard and customized diameters available |
Key Features
The pilot drill and 60° center-seat cutting section are ground on the same solid carbide tool axis.
This integrated structure helps improve concentricity between the pilot hole and the conical support surface while reducing the need for multiple tools.
The small pilot section determines the initial center position and the depth of the center hole.
Accurate pilot diameter, symmetry, and cutting-edge condition help reduce center deviation, oversized pilot holes, and premature pilot-tip failure.
The 60° conical section forms the contact surface for selected lathe centers and positioning applications.
Balanced cutting edges and consistent profile geometry help produce a more uniform bearing surface and improve rotational support.
The compact cutting section and solid carbide construction help reduce deflection during initial workpiece contact.
Improved rigidity supports more stable center positioning, particularly in automated turning and batch production.
Carbide center drills are suitable for CNC lathes, turning centers, automatic lathes, cylindrical grinding machines, machining centers, and transfer lines. They are particularly useful when an accurate center reference and stable rotational support are required for subsequent machining.
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 carbide center drill is a solid carbide combination tool with a small pilot drill and a larger conical cutting section. It produces the pilot hole and center seat required for shaft positioning or lathe-center support.
Many center drills use a 60° included angle for the center-seat section. Custom angles and protective profiles can also be produced according to the application.
A center drill has a small pilot diameter followed by a larger conical center-seat section. A spot drill normally has a single-diameter body and conical point used mainly for positioning, chamfering, or shallow countersinking.
A 60° spot drill can produce a conical recess, but it does not normally create the same pilot-hole and center-seat combination. When a complete center hole is required, a center drill is generally more suitable.
A 60° spot drill can produce a conical recess, but it does not normally create the same pilot-hole and center-seat combination. When a complete center hole is required, a center drill is generally more suitable.
Yes. A correctly designed 60° center hole can provide a contact surface for compatible lathe centers. The dimensions should be selected according to workpiece size, load, and machining process.
Yes. Single-ended and double-ended carbide center drills can be manufactured according to tool-holder, machine, and production requirements.
Yes. Pilot diameter, pilot length, center-seat diameter, center-seat angle, body diameter, flute length, and overall length can be customized.
Yes. Single-ended and double-ended carbide center drills can be manufactured according to tool-holder, machine, and production requirements.
It is mainly intended for spotting, chamfering, countersinking, and shallow hole-entry preparation. It should not normally replace a standard carbide drill for full-depth drilling.
The pilot diameter is determined by the tool geometry. The larger center-seat diameter depends on the tool profile and programmed machining depth.
Spindle runout, tool holding, tool geometry, cutting-edge symmetry, workpiece setup, machine rigidity, pilot-tip condition, and machining parameters can all affect concentricity.
Please provide the pilot diameter, pilot depth, center-seat angle, required seat diameter, workpiece material, component diameter, single- or double-ended requirement, machine condition, coating preference, and component drawing.
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