Hertel 72028558 Chucking Reamer 0.2855 in Hss Straight Flute

Product Description

The HERTEL 72028558 is a high-speed steel (HSS) chucking reamer designed to bring bored or drilled holes to a precise finished diameter. With a 0.2855-inch cutting diameter, 6-inch overall length, and 1.5-inch straight flute length, this reamer is built for close-tolerance hole finishing in metal workpieces. The straight-cylindrical shank seats securely in standard drill chucks or collet-style holders. Delivered with a bright, uncoated finish, it is suited for general-purpose reaming in ferrous and non-ferrous materials where a dedicated coating is not required. Machinists and tool-and-die tradespeople specify this style for production drilling lines and manual machine operations alike.

This chucking reamer fits applications in machine shops, maintenance facilities, and light manufacturing environments. It is used in drill presses, lathes, and CNC machining centers where a standard straight-flute chucking reamer is the appropriate tool choice. The 6-flute, right-hand cutting geometry provides smooth chip flow and consistent surface finish in through-holes and blind holes during finishing passes at recommended feed and speed parameters for HSS tooling.

Key Features

• 0.2855-inch cutting diameter for precise hole finishing within the 0.2500 to 0.2999-inch diameter range
• HSS construction provides toughness and resistance to edge chipping in general-purpose machining
• 6-flute straight geometry delivers consistent surface finish and balanced cutting action
• Right-hand cutting direction compatible with standard spindle rotation
• Straight-cylindrical shank fits standard drill chucks and collet holders without adapters
• Bright, uncoated finish suitable for use with cutting fluids across a range of workpiece materials

Compatibility

Designed as an OEM-style chucking reamer for use in drill presses, lathes, and machining centers that accept a straight-cylindrical shank reamer in the 0.2500 to 0.2999-inch diameter class.

Installation Notes

Installation and use should be performed by a qualified machinist familiar with reaming operations and machine tool safety. Ensure the machine spindle is fully stopped and locked out before installing or removing the reamer from the chuck or collet. Verify shank seating and runout before beginning a finishing pass, as excessive runout will degrade hole tolerance and surface finish. Always apply an appropriate cutting fluid for the workpiece material and operate within the feed and speed recommendations for HSS tooling.