Osg 300-3740 Chucking Reamer 9.5mm Solid Carbide

Product Description

The OSG 300-3740 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. With a 9.5 mm (0.3740 inch) reamer diameter and a bright, uncoated finish, it delivers consistent sizing in a wide range of materials. The straight flute geometry and right-hand cutting direction make it well suited for through-hole and blind-hole reaming where chip control and surface finish are critical. At 89 mm overall length with a 32 mm flute length and six flutes, this reamer provides the rigidity and cutting action needed for tight-tolerance work in production and job-shop environments.

The 300-3740 is intended for use in CNC machining centers, drill presses, and manual lathes where a straight-shank chucking reamer is required. It fits standard drill chucks and collet systems accepting a straight-cylindrical shank. Typical applications include finishing pre-drilled holes to close tolerances in ferrous and non-ferrous metals, plastics, and other machinable materials. This reamer is part of the OSG 300D series, positioned for standard general machining use where dimensional accuracy and repeatable results are required.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding machining environments
• 9.5 mm (0.3740 inch) diameter with tolerance of +0.0001 to +0.0005 inches for precise hole sizing
• Six straight flutes with right-hand cut for smooth, consistent material removal
• Bright uncoated finish suitable for use with cutting fluids across a broad range of workpiece materials
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• Part of the OSG 300D series for general machining applications

Compatibility

Designed as a general-purpose chucking reamer compatible with standard straight-shank toolholders, drill chucks, and collet systems used in CNC machining centers, drill presses, and lathes.

Installation Notes

Chucking reamers should be installed by a qualified machinist following standard toolholding procedures for the machine in use. Ensure the spindle is fully stopped and locked out before changing tooling. Secure the straight shank firmly in a properly sized collet or chuck to minimize runout, which directly affects hole tolerance and tool life. Always use appropriate cutting fluid for the workpiece material and do not exceed the recommended feed and speed parameters for solid carbide tooling.