Chicago-latrobe 55270 Taper Length Drill Bit 19/32 in

Product Description

The CHICAGO-LATROBE 55270 is a heavy-duty taper length drill bit engineered for demanding metal-cutting applications in industrial and trade environments. Built from high speed steel with a titanium nitride (TiN) coating, this 19/32-inch diameter bit delivers extended tool life and reduced friction compared to uncoated HSS tooling. The 135-degree split point reduces walking on entry and allows drilling without a center punch on most surfaces. With an overall length of 8.75 inches and a 6.5-inch parabolic flute, the 55270 handles deeper holes while maintaining efficient chip evacuation. Machinists, tool-and-die technicians, and maintenance mechanics are the primary users.

The 55270 is suited for drilling into alloy steel, carbon steel, aluminum, and other non-ferrous metals in production machining, maintenance repair, and fabrication settings. The tanged shank with a 0.5-inch shank diameter seats securely in standard Morse taper drill press spindles and similar machine tool holders. The right-hand cutting direction and parabolic flute geometry promote aggressive chip clearing in deeper holes, reducing heat buildup and bit deflection. This bit is part of the Chicago-Latrobe Series 120DHT lineup, which is built for heavy-duty drilling cycles where standard-length bits are insufficient for depth requirements.

Key Features

• TiN coating extends tool life and lowers cutting friction on ferrous and non-ferrous materials
• 135-degree split point self-centers on entry, minimizing the need for a center punch
• Parabolic flute profile promotes fast, clean chip evacuation in deep-hole drilling
• Tanged shank provides positive drive in Morse taper spindles, preventing slippage under load
• Heavy-duty Series 120DHT grade construction handles high-cycle and production drilling demands
• Diameter tolerance of +0.0000 to -0.0012 inches ensures close-fit hole accuracy

Compatibility

Designed for use in standard drill press and machine tool spindles accepting a tanged shank with a 0.5-inch shank diameter. Suitable for drilling alloy steel, aluminum, carbon steel, and non-ferrous metals.

Installation Notes

Install the tanged shank fully into the Morse taper socket and verify the bit is seated before operating. Always secure the workpiece and confirm spindle speed is appropriate for the material and bit diameter before beginning a cut. Use cutting fluid when drilling steel to manage heat and prolong bit life. Inspect the cutting edges before each use and remove the bit from service if the TiN coating is worn through or the flutes show chipping.