Chicago-latrobe 52485 Reduced Shank Drill Bit 1-21/64 in

Product Description

The CHICAGO-LATROBE 52485 is a reduced shank twist drill bit designed for portable drilling applications in metal, wood, and cast iron. Built from high speed steel with a coated finish, it delivers reliable performance in general-purpose drilling tasks. The bit features a 1-21/64 inch cutting diameter (1.3281 inches decimal) paired with a 1/2 inch Weldon shank, making it compatible with standard 1/2 inch chuck capacity portable drills. The 118-degree standard point angle provides a versatile entry geometry suited to a wide range of workpiece materials. A right-hand spiral flute configuration efficiently clears chips during operation.

This drill bit is intended for use in portable drilling setups across fabrication, maintenance, and mechanical trade applications. The Weldon shank with three flats resists slippage under torque, making it well suited for high-load drilling in alloy steel, carbon steel, cast iron, and wood. The reduced shank design allows a larger-diameter bit to be driven by a 1/2 inch capacity drill chuck, extending the usable range of standard portable equipment without requiring a larger drive tool. It belongs to the Series 190F product family.

Key Features

• 1-21/64 inch cutting diameter (1.3281 inches decimal) with tight tolerance: +0.0000 to -0.0015 inches
• 1/2 inch Weldon shank with three flats for positive anti-slip grip
• 118-degree standard point angle for general-purpose entry on steel, cast iron, and wood
• High speed steel construction with coated finish for wear resistance
• Right-hand cut, regular spiral, two-flute configuration for efficient chip evacuation
• Reduced shank design allows use with standard 1/2 inch chuck portable drills

Compatibility

Designed for use with portable drills equipped with a 1/2 inch chuck capacity. Suitable for drilling alloy steel, carbon steel, cast iron, and wood workpieces. No coolant required per manufacturer specification.

Installation Notes

Installation is performed by machinists, maintenance mechanics, or general trade professionals using standard portable drill equipment. Secure the Weldon shank firmly in the chuck, engaging the flat faces to prevent rotation under load before beginning the cut. Inspect the cutting edges for wear or chipping before each use. Follow applicable shop safety practices and wear appropriate eye protection when operating.