Hertel 72027501 Chucking Reamer 0.2750 in Hss Straight Flute

Product Description

The HERTEL 72027501 is a straight-flute chucking reamer designed to finish-ream drilled holes to a precise 0.2750-inch diameter. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, it delivers consistent sizing and smooth bore finish in a range of common workpiece materials. The straight-cylindrical shank seats securely in standard chuck holders, and the right-hand cutting direction is compatible with conventional drilling setups. With an overall length of 6 inches and a 1.5-inch flute length, this reamer suits general-purpose machine shop and maintenance applications where close-tolerance hole finishing is required.

This chucking reamer is suited for use in vertical mills, drill presses, lathes, and CNC machining centers performing finish-reaming operations on ferrous and non-ferrous materials. It is a practical choice for toolroom work, fixture building, and production runs requiring repeatable hole sizing in the 0.2500 to 0.2999-inch diameter range. Machinists and maintenance technicians install it wherever a drilled or bored pilot hole needs to be brought to final tolerance.

Key Features

• 0.2750-inch reamer diameter for precise finish-bore sizing
• 6-flute straight design promotes smooth cutting and accurate hole geometry
• HSS construction provides toughness and wear resistance across common workpiece materials
• Bright, uncoated finish suitable for use with standard cutting fluids
• Straight-cylindrical shank for straightforward chuck mounting
• Right-hand cutting direction compatible with standard machine setups

Compatibility

Designed as a standard chucking reamer for use in any machine tool equipped with a drill chuck or collet that accepts a straight-cylindrical shank; fits applications requiring finish reaming in the 0.2500 to 0.2999-inch diameter range.

Installation Notes

Installation and use of this reamer should be performed by a qualified machinist or maintenance technician familiar with machine tool operation. Always secure the workpiece and verify the machine is at a safe, reduced RPM appropriate for reaming before starting the cut. Apply cutting fluid to extend tool life and improve surface finish. Never force the reamer through an undersized pilot hole; ensure the pilot bore is properly sized before finish-reaming.