Value Collection SM0407940 Chucking Reamer Hss

Product Description

The VALUE COLLECTION SM0407940 is a straight-flute chucking reamer machined from high-speed steel (HSS) for precision hole finishing in metalworking and machining applications. It measures 0.7940 inches in diameter with a 9.5-inch overall length and a 2.5-inch flute length, making it well-suited for reaching into moderate-depth bores while maintaining accurate sizing. The bright, uncoated finish is standard for HSS reamers and performs reliably across a range of mild steels, aluminum, brass, and similar machinable materials. Right-hand cutting action is the industry standard for most general-purpose reaming operations. The straight-cylindrical shank seats securely in a drill chuck or collet holder on any standard machine tool setup.

This reamer is intended for use in machine shop and production environments where precise hole diameter control is required after drilling. It is appropriate for use on milling machines, drill presses, and lathes. A 0.7940-inch diameter falls within the 0.7000 to 0.9999-inch diameter range, which covers a broad set of common bore sizes encountered in fixture, tooling, and component manufacturing. A licensed machinist or skilled toolmaker handles installation and setup in most production settings.

Key Features

• 0.7940-inch finished bore diameter for accurate hole sizing
• High-speed steel (HSS) construction for durability across common workpiece materials
• Straight flute geometry suited for through-holes and stable cutting action
• Right-hand cutting direction compatible with standard machine tool spindles
• Straight-cylindrical shank fits drill chucks and collet holders without adapters
• Bright, uncoated finish — no coating buildup to affect dimensional accuracy

Compatibility

Designed as an OEM-style replacement or direct-use chucking reamer for machine tool setups requiring a 0.7940-inch finished hole diameter with a straight-cylindrical shank.

Installation Notes

Installation and use should be performed by a qualified machinist or toolmaker familiar with reaming operations. Power down and fully stop the machine spindle before mounting or removing the reamer from the chuck or collet. Use cutting fluid appropriate for the workpiece material to extend tool life and maintain bore finish quality. Never exceed the recommended feed rate for the workpiece material, as forcing a reamer can cause deflection and compromise hole tolerances.