Hertel 30205200 Circuit Board Drill Bit No. 55 Carbide

Product Description

The HERTEL 30205200 is a solid carbide circuit board drill bit designed for precision drilling in printed circuit board fabrication and tight-tolerance machining applications. Built to wire gauge size No. 55, it measures 0.0520 inches (1.32 mm) in cutting diameter with a 130-degree drill point angle optimized for clean entry without walking. The fast spiral flute geometry and 35-degree helix angle promote efficient chip evacuation, reducing heat buildup in small-diameter, high-speed operations. The bright polished finish further reduces friction at the cutting edge. Licensed electricians, PCB fabricators, and precision machinists are the primary installers and users of this bit.

This drill bit is suited for drilling through a wide range of materials including alloy steel, carbon steel, cast iron, stainless steel, high-temperature alloys, and titanium. Its solid carbide construction makes it appropriate for use in CNC drilling equipment and precision drill presses where rigidity and runout control are critical. The 1/8-inch straight shank is compatible with standard collets and chucks used in PCB drilling machines and small CNC machining centers. It is sold individually.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• 130-degree drill point angle reduces thrust force and improves entry accuracy on thin substrates
• Fast spiral flute with 35-degree helix angle for efficient chip evacuation at high RPM
• Tapered web configuration adds core strength while maintaining cutting efficiency
• Bright polished finish minimizes friction and built-up edge at the cutting zone
• Right-hand cutting direction compatible with standard CNC and benchtop drill equipment

Compatibility

Designed as a wire gauge No. 55 circuit board drill bit compatible with CNC drilling machines and precision drill presses accepting a 1/8-inch straight round shank.

Installation Notes

This bit is installed by machinists or PCB fabrication technicians using standard collet chuck systems sized for 1/8-inch shanks. Ensure the spindle and collet are clean and properly torqued before seating the bit to prevent runout. Always confirm spindle speed is appropriate for the cutting diameter and material before operation. Inspect the cutting edge for chipping before each use, as solid carbide bits are brittle and sensitive to side loading.