Hertel 72402068 Taper Pin Reamer Size 6 Hss

Product Description

The HERTEL 72402068 is a Number 6 taper pin reamer designed to enlarge, finish, and shape tapered holes to accept standard taper pins. Manufactured from high-speed steel (HSS), this reamer features a bright/uncoated finish and six spiral flutes arranged for right-hand cutting. It has a small end diameter of 0.2773 inches, a large end diameter of 0.354 inches, and an overall length of 5.4375 inches (5-7/16 inches). The spiral flute geometry evacuates chips efficiently during the cut. This tool is suited for toolroom, maintenance, and production environments where accurate taper pin hole preparation is required.

This reamer is used in general-purpose metalworking applications where taper pin holes must be precisely sized and finished. Typical use cases include fitting taper pins in shaft-to-hub assemblies, gearboxes, fixtures, and mechanical linkages. The right-hand cutting direction suits standard drill press, lathe, or hand-held applications. It is appropriate for use in both production shops and maintenance operations where consistent taper pin fitment is critical to assembly integrity.

Key Features

• Number 6 taper pin size with a 1:48 taper rate for standard taper pin fitment
• High-speed steel construction for general-purpose cutting performance
• Six spiral flutes with left-hand spiral direction and right-hand cutting for smooth chip evacuation
• Bright/uncoated finish suitable for use with cutting fluids across common workpiece materials
• Square shank (23/64 inches, 0.3594 inches decimal) for positive drive in standard tap wrenches or holders
• Flute length of 3.6875 inches (3-11/16 inches) provides adequate depth capacity for typical taper pin hole lengths

Compatibility

Designed as a general-purpose replacement or service reamer for Number 6 standard taper pin applications per ASME taper pin standards. No specific model or system compatibility was provided in the product data.

Installation Notes

This reamer should be installed and operated by a qualified machinist or maintenance technician familiar with reaming procedures. Secure the square shank firmly in a tap wrench, lathe tailstock, or appropriate holder before use, and apply cutting fluid throughout the operation to extend tool life and improve surface finish. Feed pressure should be steady and controlled to avoid tool deflection or hole oversizing. Always de-energize and lock out any machinery before performing taper pin removal or installation on assembled equipment.