Hertel 72290448 Chucking Reamer Size 44 Hss Straight Shank

Product Description

The HERTEL 72290448 is a wire-gauge chucking reamer designed to finish-ream holes to a precise 0.0860 inch diameter. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers consistent dimensional accuracy in ferrous and non-ferrous materials. The straight, 4-flute geometry promotes smooth chip evacuation and a clean bore finish on right-hand cutting operations. With an overall length of 2.125 inches and a 0.75 inch flute length, this reamer is sized for small-hole finishing work in drill press, lathe, and CNC applications. The straight-cylindrical shank seats securely in standard chucks without slippage.

This reamer is suited for precision hole finishing in machining and fabrication environments where wire-gauge sizes are required. It handles the tight tolerances typical of jig work, fixture building, pin fitting, and component assembly. Machinists and tool-and-die professionals reach for wire-size chucking reamers when drilled holes need to be brought to final size and finish. The size 44 designation corresponds to the wire gauge series, covering the decimal inch range of 0.0500 to 0.0999 inches, with this tool ground to 0.0860 inch.

Key Features

• Wire gauge size 44, ground to 0.0860 inch diameter for precise hole finishing
• High-speed steel (HSS) construction resists heat and wear during cutting
• 4 straight flutes with right-hand cutting direction for clean, burr-free bores
• Bright, uncoated finish — no coating buildup to affect tolerances in tight-clearance holes
• Straight-cylindrical shank for secure seating in standard drill chucks and collets
• Compact 2.125 inch overall length suits confined setups and small workpieces

Compatibility

Designed as a standard wire-gauge chucking reamer for use in drill presses, engine lathes, turret lathes, and CNC machining centers equipped with straight-shank toolholders or collet chucks sized for small-diameter shanks.

Installation Notes

Chucking reamers are installed by licensed machinists or qualified toolroom personnel. Secure the straight-cylindrical shank firmly in a drill chuck or collet before operation, and verify runout before cutting. Always ream at reduced RPM compared to drilling, with appropriate cutting fluid applied to extend tool life and maintain bore finish. Never use a reamer to remove more material than the recommended stock allowance for the diameter range.