Hertel 72401946 Taper Pin Reamer Size 7/0 Hss

Product Description

The HERTEL 72401946 is a taper pin reamer designed for enlarging, finishing, and shaping tapered holes to accept standard taper pins. Built from high-speed steel with a bright, uncoated finish, this tool produces accurate tapered bores at a 1:48 taper rate. It features four spiral flutes with a left-hand spiral direction and right-hand cutting action, which helps pull chips away from the cutting edge during operation. The small end diameter measures 0.0497 inches and the large end measures 0.0666 inches, making it sized for No. 7/0 taper pins. Machinists and tool-and-die technicians use this reamer in manual or machine operations requiring precise hole geometry.

This reamer is suited for general-purpose hole finishing work in machine shops, maintenance environments, and production settings where taper pin connections are used to secure hubs, collars, and similar components to shafts. The 5/64-inch square shank is compatible with standard tap wrench drives and appropriate machine tool holders. The compact overall length of 1-13/16 inches and 13/16-inch flute length make it practical for close-quarter work on small assemblies.

Key Features

• Sized for No. 7/0 taper pins with a 1:48 taper rate
• High-speed steel construction for general-purpose cutting performance
• Left-hand spiral flutes with right-hand cutting direction to aid chip evacuation
• Four flutes for consistent surface finish and accurate hole geometry
• Square shank for positive drive in tap wrenches or machine holders
• Bright, uncoated finish suitable for a wide range of workpiece materials

Compatibility

Designed as an OEM-style replacement or standard tooling selection for No. 7/0 taper pin applications in manual and machine reaming operations.

Installation Notes

This tool is typically used by machinists and maintenance technicians. Secure the workpiece firmly before reaming and ensure proper alignment to avoid bell-mouthing the hole. Use appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality. Inspect the reamer for wear or chipping before each use and do not force the tool through the bore.