Crownloc™ is a range of exchangeable tip drills designed to offer high quality holes at a lower cost.
Matching the quality of high precision drills, Crownloc uses replaceable crowns to eliminate the need for and cost of regrinding. This guarantees consistently higher performance and tool life while also reducing the number of drills required in inventory.
Crownloc features a unique clamping design with a precision-ground interface of interlocking V-grooves to allow high cutting speeds and ensure rigidity and exact repeatability of positioning of each crown. Long land margins provide excellent guidance to ensure high hole quality and self-centering geometry eliminates the need for center drilling operations.
Double coolant holes through the crown permit a high volume of coolant to reach the cutting edges. The result is safer chip evacuation and longer tool life.
Crownloc is available in a large range of optimized tip geometries for different applications and workpiece materials. The P geometry is recommended for drilling in steel and replaces the need for regrindable tools such as solid carbide drills and brazed drills. The K geometry is designed for cast iron and features chamfered corners to reduce wear at high cutting speeds and eliminate “break out” at the exit of a hole. The M geometry is designed for stainless steel, hardened steel and superalloys. It reduces stress in the machined surface and minimizes burr creation at the hole’s exit by minimizing cutting forces, high heat generation and workpiece hardening.
Diameter range 10 - 25.99 mm (.393 - 1.023 inch).
Other dimensions are available on request.