Hertel 72029259 Chucking Reamer 0.2925 in Hss 6 Flute

Product Description

The HERTEL 72029259 is a straight-flute high-speed steel (HSS) chucking reamer designed to finish-ream holes to a precise 0.2925-inch diameter. Built with 6 flutes and a right-hand cutting direction, it produces accurate, smooth bores in a wide range of workpiece materials. The straight-cylindrical shank seats cleanly in standard drill chucks and collet holders. At 6 inches overall length with a 1.5-inch flute length, it is suited for general-purpose through-hole and blind-hole reaming operations on manual lathes, drill presses, and CNC machining centers. The bright, uncoated finish is appropriate for use with cutting fluids in ferrous and non-ferrous applications. Machinists and tool-and-die professionals are the primary users of this tool.

This reamer is used in machine shops, maintenance and repair operations, and production environments where hole tolerances demand a finish pass beyond drilling. Typical applications include reaming clearance holes for dowel pins, precision fit bores for shafts and bearings, and any operation requiring consistent hole geometry within the 0.2500 to 0.2999 inch diameter range. It is suitable for both horizontal and vertical spindle setups and is commonly run at reduced speeds with adequate lubrication to maximize tool life and surface finish quality.

Key Features

• 0.2925-inch reaming diameter for precise hole finishing in the 0.2500 to 0.2999 inch range
• HSS construction provides toughness and resharpening capability across common shop materials
• 6 straight flutes deliver consistent chip evacuation and a uniform bore surface finish
• Right-hand cutting direction compatible with standard spindle rotation
• Straight-cylindrical shank fits standard drill chucks and ER-style collet holders
• Bright, uncoated finish allows use with a broad range of cutting fluids and lubricants

Compatibility

Designed as a standard chucking reamer for use in drill presses, engine lathes, turret lathes, and CNC machining centers equipped with a drill chuck or straight-shank collet holder. No specific OEM or model compatibility is stated by the manufacturer for this tool.

Installation Notes

Chucking reamers are installed and operated by qualified machinists. Secure the straight-cylindrical shank fully in the chuck or collet before operation and verify runout with a dial indicator when hole tolerance is critical. Power down and lock out the spindle before changing or adjusting the tool. Always apply an appropriate cutting fluid for the workpiece material and run the reamer at reduced speed relative to drilling — typically one-third to one-half of the drill speed for the same diameter — following standard shop practice and applicable tooling manufacturer recommendations.