Hertel 2290708 Chucking Reamer 1-1/8 in Hss 8 Flute

Product Description

The HERTEL 2290708 is a high-speed steel (HSS) chucking reamer designed to bring bored or drilled holes to a precise finished diameter. At 1.125 inches in diameter with an 11-inch overall length and a 2-7/8-inch straight flute section, this reamer is built for production and maintenance machining environments where hole tolerance and surface finish are critical. The straight-cylindrical shank seats directly in a drill chuck, collet, or machine spindle. Eight right-hand cutting flutes distribute cutting load evenly and help evacuate chips during through-hole and blind-hole finishing passes. The bright, uncoated finish is standard for general-purpose HSS reamers used across a wide range of workpiece materials.

This reamer is suited for metalworking operations in machine shops, tool rooms, and maintenance facilities. It is used on drill presses, lathes, CNC machining centers, and manual milling machines wherever a 1-1/8-inch finished bore is required. Typical applications include fitting bushings, bearings, and dowel pins to close-tolerance specifications. Machinists and tool-and-die tradespeople are the primary users.

Key Features

• 1.125-inch (1-1/8 inch) reamer diameter for precise bore finishing
• 8 straight, right-hand cutting flutes for balanced chip load and smooth finish
• 11-inch overall length provides reach for deeper setups
• 2-7/8-inch flute length handles standard through-hole and shallow blind-hole applications
• HSS construction offers toughness across a broad range of workpiece materials
• Bright uncoated finish — no coating buildup affects dimensional tolerance
• Straight-cylindrical shank for direct chuck or collet mounting

Compatibility

Designed as a standard chucking reamer for use in drill chucks, ER collets, or straight-shank tool holders on drill presses, lathes, and machining centers requiring a 1-1/8-inch finished bore diameter.

Installation Notes

Chucking reamers are installed by licensed machinists or qualified tool-room personnel. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before mounting the reamer. Use a reaming allowance appropriate to the workpiece material — removing too much stock in a single pass can deflect the tool or damage the flutes. Apply cutting fluid during the reaming operation to extend tool life and improve bore finish.