Hertel 72291081 Chucking Reamer 0.125 in Hss 4 Flute

Product Description

The HERTEL 72291081 is a straight-flute chucking reamer designed to finish-ream drilled or bored holes to a precise diameter of 0.125 inches (1/8 inches). Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers consistent cutting performance in ferrous and non-ferrous materials. The straight-cylindrical shank seats securely in standard drill chucks and collet holders. With an overall length of 2.75 inches and a flute length of 0.875 inches, this compact reamer suits tight-clearance applications where control and accuracy are critical. Right-hand cutting direction with 4 flutes provides smooth material removal and a clean finish bore.

This reamer is suited for precision hole-finishing operations in machine shops, toolrooms, and maintenance environments. It is commonly used in CNC machining centers, drill presses, and manual lathes where a consistent 0.1250-inch finished bore is required. Machinists and toolroom technicians reach for this style of chucking reamer when tolerances are tight and a drilled hole alone will not meet specification.

Key Features

• 0.125-inch (0.1250 decimal inch) finished bore diameter for precise hole sizing
• High-speed steel (HSS) construction for durability across a range of workpiece materials
• Bright/uncoated finish suitable for general-purpose reaming applications
• 4 straight flutes with right-hand cutting direction for smooth, consistent stock removal
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• Compact 2.75-inch overall length for use in tight-clearance setups

Compatibility

Designed as an OEM-style chucking reamer for use in standard drill chucks and collet-style toolholding systems accepting a straight-cylindrical shank at the 0.125-inch diameter range.

Installation Notes

This reamer is intended for use by machinists and toolroom professionals in powered spindle equipment. Always secure the workpiece and ensure the machine is brought to the appropriate speed for the workpiece material and reamer diameter before engaging the cut. Use cutting fluid appropriate for the workpiece material to extend tool life and improve surface finish. Never force a reamer through an undersized hole — pre-drill or bore to the recommended prep diameter before reaming.