Osg 300-1200 Chucking Reamer Wire Size 31 Solid Carbide

Product Description

The OSG 300-1200 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. It carries a wire size designation of 31, corresponding to a decimal diameter of 0.1200 inches, and holds a tight diameter tolerance of +0.0001 to +0.0004 inches for controlled fit on close-tolerance bores. The reamer features a straight flute geometry with a right-hand cut and a straight cylindrical shank for use in standard drill chucks or collet holders. Overall length is 2.25 inches with a flute length of 0.625 inches. Machinists and CNC operators handling light-diameter finish reaming in production or toolroom environments are the primary installers.

This reamer is suited for finish reaming wire-gauge holes in ferrous and non-ferrous materials where dimensional accuracy and surface finish are critical. The solid carbide construction makes it appropriate for harder workpiece materials and high-cycle production runs where HSS tooling wears quickly. At 0.1200 inches diameter, it fills the need for precision finishing of small-bore holes in jigs, fixtures, and precision components. The bright, uncoated finish is the standard for general-purpose carbide reaming where coating is not required by the application.

Key Features

• Solid carbide construction for extended tool life in demanding materials
• Wire size 31 diameter at 0.1200 inches with tolerance of +0.0001 to +0.0004 inches
• Straight flute, right-hand cut geometry for clean chip evacuation in through-holes
• Straight cylindrical shank compatible with standard chucks and collets
• 4-flute design balances cutting efficiency with bore finish quality
• Bright, uncoated finish suitable for general machining without coolant-through requirement

Compatibility

Designed as an OEM-style solid carbide chucking reamer from the OSG 300D series for general machining applications requiring wire size 31 hole finishing.

Installation Notes

This tool is installed and operated by machinists in manual or CNC drilling and milling equipment. Secure the straight shank firmly in a drill chuck or precision collet holder before use, and verify runout is within acceptable limits to protect the close-tolerance carbide cutting edges. Always bring the spindle to a complete stop before changing or inspecting the reamer. Appropriate speeds and feeds for the workpiece material should be referenced from the manufacturer or standard machining data tables before use.