Hertel 72033830 Chucking Reamer 0.3830 in Hss 6 Flute

Product Description

The HERTEL 72033830 is a straight-flute chucking reamer designed to finish-ream drilled or bored holes to tight tolerances in a wide range of metalworking applications. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, this reamer delivers consistent sizing and smooth surface finishes in general-purpose machining environments. It measures 7 inches in overall length with a 1.75-inch flute length and a nominal reamer diameter of 0.3830 inches. The straight-cylindrical shank seats securely in standard drill chucks and collets. With 6 flutes and right-hand cutting direction, it provides stable, chatter-resistant cutting action suited to production and maintenance machining operations.

This chucking reamer is intended for use in drill presses, lathes, CNC machining centers, and manual machine tools where a precisely sized hole finish is required. It is appropriate for reaming through-holes and blind holes in ferrous and non-ferrous metals in both job-shop and production settings. Machinists, tool-and-die makers, and maintenance technicians commonly reach for this style of reamer when a drilled hole must be brought to a close-tolerance final diameter. The 0.3830-inch diameter falls within the 0.3500 to 0.3999-inch decimal inch range, making it suitable for standard fractional and decimal hole-size requirements in that range.

Key Features

• High-speed steel (HSS) construction provides durability and resistance to wear in general-purpose metal cutting
• Bright, uncoated finish suitable for use with a wide range of cutting fluids and materials
• 6 straight flutes with right-hand cutting direction for stable, consistent material removal
• Straight-cylindrical shank compatible with standard drill chucks and ER-style collet holders
• 0.3830-inch nominal diameter for precise hole sizing to close tolerances
• 7-inch overall length with 1.75-inch flute length balances reach and rigidity

Compatibility

Designed as a standard chucking reamer for use in any machine tool equipped with a drill chuck or straight-shank collet holder; no specific OEM machine or part compatibility is stated for this product.

Installation Notes

Installation and use should be performed by a qualified machinist or tool operator familiar with reaming operations and safe machine tool practices. Power down and de-energize the machine spindle before loading or removing the reamer from the chuck or collet. Ensure the shank is fully seated and securely clamped before starting the spindle, and always apply appropriate cutting fluid to extend tool life and achieve the intended surface finish. Do not use this tool to remove stock beyond the intended reaming allowance, as overloading a reamer can cause chatter, oversizing, or tool breakage.