22 mm Diameter Solid Carbide Drills: High-Precision at Large Scale

A “large-diameter” drill looks simple on paper, but it is demanding in practice. As diameter increases, cutting forces rise and small imperfections become magnified at the hole wall: runout, point asymmetry, and thermal expansion can quickly translate into positional errors, uneven hole quality, or faster edge wear.

In this custom programme, we focus on the three elements that decide accuracy: (1) stable point geometry for predictable entry and controlled breakthrough, (2) tight runout control across the functional cutting length, and (3) flute form and cutting-edge preparation that keep chip evacuation stable under higher loads.

We manufacture from solid carbide blanks and grind the point and flutes with precision checks so the tool behaves consistently from first contact to full-depth machining. For production stability, we also align the inspection plan with the end customer’s acceptance criteria: point profile, concentricity / runout, and functional cutting behaviour at the requested speeds and feeds.

The result is straightforward: even at 22 mm diameter, we can deliver high-precision drilling with repeatable hole outcomes across a production batch. If your drawing specifies tight tolerances or you have experienced drifting accuracy at large diameter, send hole diameter, depth, material and hardness, machine model, and target spindle speed — we will propose the right drill configuration from our Changzhou workshop.