Sgs 66621 4.5 Mm Solid Carbide Taper Length Drill Bit

Product Description

The SGS 66621 is a taper length drill bit engineered for high-performance drilling in demanding shop and field environments. Built from micrograin solid carbide and coated with Ti-NAMITE-X (TX), it delivers exceptional wear resistance and heat dissipation at elevated cutting speeds. The 4.5 mm diameter bit features a 135-degree standard point with web-thinning for reduced thrust and cleaner entry. A right-hand spiral flute with an 8xD flute-to-diameter ratio promotes efficient chip evacuation. Coolant-through capability supports high-speed, deep-hole operations where heat buildup is a concern. This bit is intended for use by machinists, tool-and-die technicians, and production drilling professionals.

The SGS 66621 is suited for universal material applications including steel, stainless, cast iron, aluminum, and non-ferrous alloys. Its taper length geometry makes it appropriate for through-hole and deeper-reach drilling where standard-length bits fall short. The straight cylindrical shank fits conventional drill chucks and collet holders without modification. Conforming to DIN 6537 specification, it is compatible with CNC machining centers, drill presses, and manual mills requiring tight-tolerance hole placement.

Key Features

• Micrograin solid carbide construction for extended tool life in hard and abrasive materials
• Ti-NAMITE-X (TX) coating reduces friction and improves heat resistance at the cutting edge
• 135-degree standard point with web-thinning lowers entry thrust and improves hole accuracy
• Coolant-through design supports deep-hole drilling and high-speed production runs
• Right-hand spiral flute at 8xD ratio promotes consistent chip evacuation
• Conforms to DIN 6537 specification for dimensional and performance consistency

Compatibility

Designed as an OEM-style replacement and production drill bit for use in standard drill chucks and collet systems accepting a straight cylindrical shank. Conforms to DIN 6537 specification.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the machine powered down and locked out per applicable safety procedures. Secure the cylindrical shank firmly in the chuck or collet to the correct clamping torque for the holder type in use. Verify coolant-through supply pressure and flow before running at elevated speeds. Inspect the cutting edge before each use and replace if chipping or wear is observed.