Hertel 72012453 Chucking Reamer 0.1245 in Hss 4-flute

Product Description

The HERTEL 72012453 is a straight-flute chucking reamer designed for precision hole finishing in metal and similar materials. Built from high-speed steel (HSS) with a bright, uncoated finish, this reamer delivers consistent bore sizing in drill press, lathe, and CNC applications. It measures 0.1245 inches in diameter with an overall length of 3.5 inches and a flute length of 0.875 inches. The straight-cylindrical shank allows secure seating in standard chucks. Right-hand cutting direction and four flutes provide smooth, accurate material removal in through-hole and blind-hole finishing operations.

This reamer is suited for machine shop and production environments where close-tolerance hole finishing is required. It falls within the 0.1000 to 0.1499 inch reamer diameter range, making it a practical tool for small-diameter bore work. Machinists and tool-and-die professionals typically deploy this style of reamer as a final-pass tool after drilling to achieve dimensional accuracy and improved surface finish inside bored holes.

Key Features

• 0.1245 inch cutting diameter for precision small-bore finishing
• High-speed steel (HSS) construction for durability across common ferrous and non-ferrous materials
• Bright, uncoated finish — no coating buildup that could alter diameter tolerance
• 4-flute straight configuration for smooth chip evacuation in through-holes
• Straight-cylindrical shank compatible with standard drill chucks and collets
• Right-hand cutting direction, standard for most machine reaming applications

Compatibility

Designed as an OEM-style chucking reamer for use in drill presses, lathes, milling machines, and CNC machining centers equipped with a standard chuck or collet capable of holding a straight-cylindrical shank.

Installation Notes

Chucking reamers are installed and operated by machinists following standard machine shop practices. Ensure the machine spindle and workpiece are properly secured before operation. Use cutting fluid appropriate for the workpiece material to extend tool life and improve surface finish. Reaming should be performed at reduced RPM and appropriate feed rate compared to drilling — never force a reamer at drilling speeds, as this risks tool breakage and oversized bores.