Chicago-latrobe 52455 Reduced Shank Drill Bit 55/64 in

Product Description

The CHICAGO-LATROBE 52455 is a reduced shank drill bit designed for portable drilling applications across a wide range of materials. Built from high speed steel, this bit features a 55/64 inch (0.8594 inch decimal) cutting diameter paired with a 1/2 inch Weldon shank for secure chuck engagement. The 118-degree split point promotes fast, accurate starts with minimal walking on entry. With a 6 inch overall length and 3-1/8 inch flute length, this bit is suited to general-purpose production and service drilling where a reduced shank design is required to fit standard 1/2 inch chucks.

This bit is intended for use in portable drilling setups on job sites and in shop environments. It performs across a broad range of workpiece materials including wood, alloy steel, carbon steel, and cast iron. The 190F Series designation places it in a line of general-purpose high speed steel tooling. It is a practical fit for electricians, plumbers, HVAC technicians, ironworkers, and maintenance professionals who regularly drill through structural and finish materials with a standard 1/2 inch portable drill.

Key Features

• 55/64 inch cutting diameter (0.8594 inch decimal) with a diameter tolerance of +0.0000 to -0.0012 inches for consistent hole size
• 118-degree split point for fast starts and reduced thrust on entry
• 1/2 inch Weldon shank with 3 flats for positive drive and no-slip chuck engagement
• High speed steel construction for durability across wood, carbon steel, alloy steel, and cast iron
• Right-hand cut with regular spiral fluting for efficient chip evacuation
• Coated finish to support extended service life in general-purpose applications

Compatibility

Designed as a general-purpose reduced shank drill bit compatible with any portable or bench-mounted drill equipped with a standard 1/2 inch chuck or 1/2 inch Weldon-style toolholder.

Installation Notes

Installation is performed by trade professionals using a standard 1/2 inch drill or drill press with a Weldon-compatible chuck or toolholder. Ensure the Weldon shank is fully seated and all set screws are tightened against the flats before operation. Verify that the workpiece is secured before drilling, and select an appropriate feed rate and speed for the target material to avoid premature tool wear or workpiece damage.