Chicago-latrobe 53180 Taper Shank Drill Bit 1.25in 4MT Hss

Product Description

The CHICAGO-LATROBE 53180 is a taper shank drill bit engineered for heavy-duty drilling in metal, steel, and similar materials. Built from high speed steel (HSS) with an oxide finish, it delivers consistent performance in general-purpose machining applications. The bit measures 1.25 inches in diameter with an overall length of 13.5 inches and a flute length of 7.875 inches. A 118-degree standard point geometry provides a reliable, self-centering entry, while the web-thinned construction reduces thrust load and improves chip clearance. Machinists and tool-room professionals are the primary installers of this bit in drill press and lathe setups.

This drill bit is suited for general-purpose metal drilling in both production shop and maintenance environments. The 4MT (Morse Taper 4) shank seats directly into matching taper-socket spindles on drill presses, lathes, and radial arm drills without requiring a chuck. Its right-hand spiral flute design efficiently evacuates chips during through-hole and deep-hole drilling operations. The Series 110 designation places it within CHICAGO-LATROBE's standard HSS taper shank line, commonly used in industrial and trade shop settings.

Key Features

• 1.25-inch diameter with a diameter tolerance of +0.0000 to -0.0015 inches for consistent, accurate hole sizing
• 4MT (Morse Taper 4) shank for direct, no-chuck mounting in compatible spindles
• 118-degree standard point angle with web-thinned geometry for reduced thrust and easier starting
• High speed steel construction for durability across a wide range of general-purpose drilling tasks
• Oxide finish provides a base level of lubricity and corrosion resistance during storage and use
• Right-hand regular spiral flute, 7.875 inches long, for efficient chip evacuation

Compatibility

Designed to seat in any machine spindle or sleeve with a No. 4 Morse Taper socket, including standard drill presses, lathes, and radial arm drills equipped with 4MT tooling.

Installation Notes

Installation is performed by machinists or qualified tool-room technicians. Before mounting, confirm the spindle socket and taper shank are clean and free of chips or burrs to ensure full taper contact. Insert the shank with the tang aligned to the drift slot and seat firmly with a mallet if required. Always power down and lock out the machine before inserting or removing taper shank tooling.