Osg 300-3750 Chucking Reamer 3/8 in Solid Carbide

Product Description

The OSG 300-3750 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. It produces accurate, smooth bores in a wide range of workpiece materials where tight dimensional tolerances are required. The reamer measures 0.3750 inches in diameter with an overall length of 3.5 inches and a flute length of 1.25 inches. Constructed from solid carbide in a bright uncoated finish, the 300-3750 offers rigidity and wear resistance suited to both CNC and manual machine tool setups. Six straight flutes with a right-hand cut deliver clean material removal while maintaining the specified diameter tolerance.

This chucking reamer fits standard drill press, lathe, or machining center applications where a straight-shank tool is required. The straight-cylindrical shank seats directly in a drill chuck or collet. Typical use cases include finishing pre-drilled or bored holes to final size in ferrous and non-ferrous metals, plastics, and other machinable materials. Its Series 300D geometry is intended for general-purpose production and maintenance machining environments.

Key Features

• Solid carbide construction provides rigidity and extended tool life in demanding materials
• Diameter tolerance of +0.0001 to +0.0005 inches ensures consistent, close-tolerance hole finishing
• Six straight flutes with right-hand cut for smooth bore finish
• Bright uncoated finish suitable for a broad range of workpiece materials
• Straight-cylindrical shank for direct chuck or collet mounting without adapters
• No coolant-through requirement simplifies setup in standard machine configurations

Compatibility

Designed as a general-purpose chucking reamer for use in drill presses, lathes, and CNC machining centers equipped with a standard drill chuck or collet capable of accepting a straight-cylindrical shank tool at 0.3750 inches diameter.

Installation Notes

Installation is performed by a machinist or toolroom technician. Secure the straight shank firmly in a properly sized collet or drill chuck before use, and verify runout with a dial indicator before cutting. Always bring the spindle to a full stop before tool changes. Follow applicable shop safety standards and machine manufacturer guidelines for cutting speed and feed rate selection based on workpiece material.