Hertel 72308133 Chucking Reamer 0.1850 in Cobalt Steel

Product Description

The HERTEL 72308133 is a straight-flute chucking reamer designed for precision hole finishing in metal fabrication and machining applications. Built from cobalt steel with a bright, uncoated finish, this reamer holds a nominal wire gauge size of 13, corresponding to a decimal diameter of 0.1850 inches. The straight-cylindrical shank seats securely in standard drill chucks or collet holders, and the 6-flute geometry delivers smooth, accurate material removal with a right-hand cutting direction. Overall length is 4.5 inches with a flute length of 1.125 inches. Machinists, tool-and-die workers, and maintenance technicians rely on this style of reamer to bring drilled holes to tight tolerances.

This chucking reamer is suited for reaming operations in ferrous metals, stainless steels, and other hard materials where cobalt steel offers an advantage over standard high-speed steel. The right-hand cutting direction is compatible with conventional machine spindle rotation. Typical applications include CNC machining centers, drill presses, and manual lathes where a straight-shank tool is required. The 0.1850-inch diameter falls within the 4.00 to 5.00 mm diameter range, making it a common size for small-bore precision work in production and maintenance environments.

Key Features

• Cobalt steel construction for increased heat and wear resistance compared to standard HSS
• 6 straight flutes with right-hand cutting direction for smooth, consistent material removal
• 0.1850-inch diameter (wire gauge size 13) for small-bore precision finishing
• Bright, uncoated finish — ready to use without additional prep
• Straight-cylindrical shank for secure seating in standard chucks and collet holders
• 4.5-inch OAL with 1.125-inch flute length suitable for shallow to moderate hole depths

Compatibility

Designed as an OEM-style chucking reamer for use in standard drill chucks and collet holders accepting straight-cylindrical shanks in the 0.1850-inch diameter class.

Installation Notes

Chucking reamers are installed and removed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and the power is locked out before changing tooling. Secure the straight-cylindrical shank firmly in the chuck or collet to the appropriate clamping specification for the holder being used. Always apply cutting fluid appropriate for the workpiece material to extend tool life and maintain hole quality.