Chicago-latrobe 52493 Reduced Shank Drill Bit 1-29/64 in

Product Description

The CHICAGO-LATROBE 52493 is a reduced shank twist drill bit designed for general-purpose portable drilling in a wide range of materials. It features a 1-29/64 inch (1.4531 inch decimal) cutting diameter with a 1/2 inch Weldon shank, allowing it to fit standard 1/2 inch chucks while boring oversized holes. The 118-degree standard point angle provides reliable entry on flat and curved workpiece surfaces. Built from high speed steel with a coated finish, the 52493 delivers solid wear resistance during sustained drilling operations. Two spiral flutes with a regular helix evacuate chips efficiently throughout the cut. Licensed trades and industrial maintenance personnel are the primary installers of this tool.

The 52493 is suited for portable drilling applications across a range of workpiece materials including wood, carbon steel, alloy steel, and cast iron. The Weldon shank with three flats resists bit slippage under torque loads, making it a practical choice for handheld drill motors and drill press setups where chuck grip on a large-diameter bit is a concern. The reduced shank design expands the effective drilling capacity of 1/2 inch drive tools beyond their nominal chuck rating.

Key Features

• 1-29/64 inch cutting diameter (1.4531 inch decimal) for oversized hole applications
• 1/2 inch Weldon shank with 3 flats prevents slippage under high torque
• 118-degree standard point angle for general-purpose entry on flat and curved surfaces
• High speed steel construction with coated finish for extended tool life
• 2-flute regular spiral design promotes efficient chip evacuation
• No coolant required — compatible with dry drilling operations

Compatibility

Designed for use with 1/2 inch Weldon-style tool holders and chucks. Compatible with wood, carbon steel, alloy steel, and cast iron workpieces as stated by the manufacturer. Part of the CHICAGO-LATROBE Series 190F reduced shank drill line.

Installation Notes

Secure the Weldon shank fully into the tool holder and tighten all set screws against the flats before operation. Confirm the drill motor or press is rated for the torque demands of a 1-29/64 inch diameter cut in the target material. Power down and de-energize any machinery completely before changing bits. Follow applicable OSHA and ANSI safety standards for drill press and portable drill operation.