Hertel 72402092 Taper Pin Reamer Size 9 High Speed Steel

Product Description

The HERTEL 72402092 is a size 9 taper pin reamer designed for precision hole enlarging, finishing, and shaping to accept standard taper pins. Manufactured from high-speed steel with a bright uncoated finish, this reamer features 8 spiral flutes with a left-hand spiral direction and right-hand cutting action. The small end diameter measures 0.4805 inches and the large end measures 0.6066 inches, with a taper rate of 1:48. A 9/16-inch square shank provides positive drive in compatible holders. Machinists and toolroom professionals use this reamer to produce accurately sized, smooth-walled tapered holes for pin-and-shaft assemblies in precision mechanical components.

This taper pin reamer is suited for general-purpose metalworking applications where taper pin holes must be reamed to size for reliable pin retention. Typical use cases include machine tool repair, fixture building, and mechanical assembly work requiring consistent taper pin fitment. The spiral flute geometry helps with chip evacuation and produces a clean surface finish in the reamed hole. The square shank is compatible with standard tap wrench handles and reamer drivers used in manual and low-speed machine operations.

Key Features

• Size 9 taper pin profile with 1:48 taper rate for standard taper pin fitment
• High-speed steel construction for durability in general-purpose metalworking
• 8 spiral flutes with left-hand spiral and right-hand cut for smooth chip evacuation
• Small end diameter 0.4805 inches, large end diameter 0.6066 inches
• 9/16-inch square shank for positive drive in tap wrenches and reamer drivers
• Bright uncoated finish suitable for use with cutting fluids across a range of work materials

Compatibility

Designed as a general-purpose replacement or service reamer for size 9 taper pin applications. Compatible with standard square-shank tap wrenches and reamer driver handles accepting a 9/16-inch square drive.

Installation Notes

This reamer should be installed and operated by a qualified machinist familiar with reaming procedures and cutting tool safety. Secure the workpiece firmly before reaming and apply appropriate cutting fluid to extend tool life and improve surface finish. Begin with a properly drilled pilot hole sized for the small end of the taper before reaming to final size. Do not exceed recommended hand or machine speeds for high-speed steel tooling in the material being worked.