Hertel 72293186 Chucking Reamer 0.1865 in Hss 6 Flute

Product Description

The HERTEL 72293186 is a straight-flute chucking reamer designed for precision hole finishing in machine shop and production environments. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers consistent sizing across a range of materials including mild steel, aluminum, and plastics. The reamer measures 0.1865 inches in diameter with a 3.5-inch overall length and a 1.125-inch flute length. It features a straight-cylindrical shank for secure clamping in drill press chucks, CNC turning centers, and manual lathes. Six right-hand cutting flutes provide smooth material removal and accurate finished bore geometry. This is an over/under size reamer, making it suitable for close-tolerance hole preparation.

This chucking reamer is used in precision machining operations where a drilled or rough-bored hole must be brought to a tight, consistent diameter. Typical applications include fixture fabrication, toolroom work, production drilling operations, and any situation requiring a reamed hole with improved surface finish and dimensional accuracy. The 0.1865-inch diameter falls within the 0.1500 to 0.1999-inch decimal inch range, suiting it for small-bore finishing tasks common in metalworking, light manufacturing, and maintenance machining environments.

Key Features

• 0.1865-inch diameter for precise small-bore finishing
• HSS construction provides durability across a range of workpiece materials
• Six straight flutes with right-hand cutting direction for smooth, accurate material removal
• Bright, uncoated finish — ready to use without additional prep
• Straight-cylindrical shank compatible with standard drill chucks and collets
• Over/under size designation allows use in close-tolerance applications

Compatibility

Designed as a standard chucking reamer for use in drill presses, lathes, CNC machining centers, and manual machine tools equipped with a chuck or collet capable of holding a straight-cylindrical shank in the 0.1865-inch diameter range.

Installation Notes

Chucking reamers are installed by machinists in machine tool spindles or drill press chucks. Ensure the machine is fully powered down and the spindle is at rest before mounting or removing the tool. The workpiece should be fixtured securely to prevent movement during the reaming pass. Always use appropriate cutting fluid for the workpiece material to extend tool life and improve bore finish.