Chicago-latrobe 53468 Reduced Shank Cobalt Drill Bit 1-1/16 in

Product Description

The CHICAGO-LATROBE 53468 is a reduced shank cobalt drill bit designed for demanding metal drilling applications. It carries a 1-1/16 inch cutting diameter with a 1/2 inch straight-cylindrical shank, allowing it to chuck into standard 1/2 inch capacity drill chucks despite the larger bit diameter. The 118-degree split point geometry starts on contact without a center punch and reduces walking on hard surfaces. Built from cobalt tool steel, this bit handles elevated heat generated when drilling cast iron, alloy steel, and carbon steel. Right-hand spiral flutes evacuate chips efficiently during portable drilling operations. It is sold individually as a single unit.

This bit is suited for portable drilling in fabrication shops, maintenance facilities, and field service environments where oversized holes are required in ferrous metals. The reduced shank design makes it practical for use with standard 1/2 inch chuck equipment rather than requiring a large-capacity drill press or specialized tooling. Typical users include millwrights, ironworkers, pipefitters, and maintenance technicians drilling through structural steel, cast iron housings, or heavy plate material. The coated finish provides additional surface hardness to extend service life under general-purpose cutting conditions.

Key Features

• Cobalt tool steel construction resists heat buildup when drilling hard ferrous metals
• 118-degree split point starts on contact and reduces bit walking
• Reduced 1/2 inch shank fits standard 1/2 inch drill chucks despite 1-1/16 inch cutting diameter
• Right-hand, regular spiral flutes with 3-1/8 inch flute length for efficient chip evacuation
• Coated finish for added surface hardness and extended tool life
• Diameter tolerance of +0.0000 to -0.0015 inches for consistent hole sizing

Compatibility

Designed for general-purpose portable drilling in cast iron, steel, alloy steel, and carbon steel workpieces using equipment with a standard 1/2 inch drill chuck capacity.

Installation Notes

Install the shank fully and securely into a 1/2 inch keyed or keyless chuck before operation. Ensure the workpiece is firmly clamped or fixtured to prevent rotation during drilling. Apply cutting fluid or lubricant when drilling through hardened or thick steel sections to manage heat and extend bit life. Inspect the cutting edges before each use and remove the bit from service if chipping or excessive wear is observed.