Hertel 72403033 Taper Pin Reamer No. 3 Hss

Product Description

The HERTEL 72403033 is a No. 3 taper pin reamer designed for hole enlarging, hole finishing, and hole shaping operations where a precise tapered bore is required to accept a standard taper pin. Manufactured from high-speed steel (HSS) with a bright/uncoated finish, this reamer features three helical flutes with a right-hand cutting direction. The small end diameter is 0.1813 inches and the large end diameter is 0.2294 inches, producing a 1:48 taper rate consistent with standard taper pin specifications. Machinists, toolroom technicians, and maintenance professionals use this tool in manual or machine-powered reaming applications.

This reamer is suited for general-purpose metalworking tasks where a No. 3 taper pin fit is required. Typical applications include finishing tapered bores in shafts, hubs, and mechanical assemblies that will be secured with a standard No. 3 taper pin. The straight shank measures 15/64 inches (0.2344 inches decimal) in diameter, making it compatible with standard drill chucks and collet holders. The helical flute geometry promotes smooth chip evacuation and consistent surface finish in both ferrous and non-ferrous materials.

Key Features

• No. 3 taper pin size with a 1:48 taper rate for standard taper pin fitment
• High-speed steel construction for durability across general-purpose reaming applications
• Three helical flutes with right-hand cutting direction for smooth chip flow
• Bright/uncoated finish suitable for use with cutting fluids
• Straight shank at 15/64 inches for compatibility with standard chucks and collets
• Overall length of 3-11/16 inches with a 2-5/16 inch flute length for reach and rigidity

Compatibility

Designed as a general-purpose No. 3 taper pin reamer for use in standard taper pin reaming applications across metalworking and maintenance environments.

Installation Notes

This reamer should be used by qualified machinists or maintenance technicians familiar with reaming operations. Secure the straight shank firmly in a drill chuck or collet before use, and ensure the workpiece is properly fixtured to prevent movement. Apply a suitable cutting fluid to extend tool life and improve surface finish. Never exceed the recommended feed rate for the material being reamed, and inspect the cutting edges before each use for signs of wear or chipping.