Hertel 72290356 Chucking Reamer Size 35 Hss 4 Flute Rh

Product Description

The HERTEL 72290356 is a straight-flute chucking reamer ground to a wire size 35 diameter of 0.1100 inches. It is manufactured from high-speed steel (HSS) with a bright, uncoated finish and features four right-hand cutting flutes. The straight-cylindrical shank seats directly in a drill chuck or collet, making it straightforward to deploy on a knee mill, drill press, or CNC machining center. With an overall length of 2.625 inches and a flute length of 0.875 inches, this reamer is sized for short through-holes and shallow blind bores requiring a precise, finished diameter in the small-hole range.

This reamer is suited for machine shops, tool-and-die work, and maintenance applications where small-diameter holes must be brought to a tight tolerance finish. It handles ferrous and non-ferrous materials typical of general machining operations. The bright HSS construction performs well at conventional cutting speeds without requiring coolant, though flood or mist cooling extends tool life in production runs. It is installed by a machinist or toolroom technician and is not intended for hand reaming.

Key Features

• Wire size 35 diameter — 0.1100 inches decimal equivalent for precise small-bore finishing
• High-speed steel (HSS) construction for durability across ferrous and non-ferrous workpieces
• Bright, uncoated finish — ready to use out of the package with no coating compatibility concerns
• Four straight flutes with right-hand cutting direction for standard machine reaming
• Straight-cylindrical shank fits standard drill chucks and collets without adapters
• Compact 2.625-inch overall length suits drill presses, mills, and CNC machining centers

Compatibility

Designed as a machine chucking reamer for use in any drill press, milling machine, or CNC machining center equipped with a chuck or collet that accepts a straight-cylindrical shank in the small-diameter range.

Installation Notes

This tool is installed by a qualified machinist; power down and de-energize the machine spindle before changing tooling. Secure the straight-cylindrical shank fully in the chuck or collet before operation. Pre-drill or bore the hole close to finished size, leaving only a small amount of stock for the reamer to remove. Follow applicable shop safety procedures and machine manufacturer guidelines for spindle speed and feed rate selection.