HSS-Co Center Drill Bit – TiAlN Coated Cobalt Steel Spotting Bit for Precision Metalworking

Cobalt Center Drill Bit with TiAlN Coating – For Spot Drilling and Chamfering Metal

As a specialized manufacturer of precision cutting tools, XRTOOLS brings decades of engineering experience to the development of advanced drill bits for industrial use. Our HSS-Co Center Drill Bit, treated with a TiAlN (Titanium Aluminum Nitride) coating, represents the fusion of metallurgical excellence, precision CNC manufacturing, and application-driven design.

This center drill bit is engineered for spotting, centering, chamfering, and pilot hole preparation across a wide range of hard metals. Constructed from 5% cobalt high-speed steel (HSS-Co), it offers excellent hot hardness and wear resistance, ensuring durability in high-speed machining environments.

Engineered by Professionals – Our Production Process

Each XRTOOLS center drill bit is produced under ISO-standardized procedures using industry-leading CNC equipment. Our commitment to quality ensures every tool exceeds the performance standards of metalworking professionals.

1. Material Selection – HSS-Co with 5% cobalt for thermal resistance

2. Forging & Roughing – High-pressure forged blanks ensure consistent grain structure

3. CNC Milling & Grinding – Precision geometry on point angles and flute profiles

4. Vacuum Heat Treatment – Achieving HRC 65–67 for edge retention

5. TiAlN Coating – Advanced ceramic layer via PVD for heat shielding and lubricity

6. 100% Quality Control – Runout, concentricity, hardness, and coating thickness tested

XRTOOLS tools are built to outperform in real-world industrial applications—delivering reliability, consistency, and service life demanded by today’s professionals.

Application Scenarios – Trusted Across Industries

Product Specifications: HSS-Co Center Drill Bit with TiAlN Coating