Value Collection 558u 8 Taper Pin Reamer Size 8 Hss

Product Description

The VALUE COLLECTION 558u 8 is a size 8 taper pin reamer designed for enlarging, finishing, and shaping tapered holes to accept standard taper pins. Machined from high speed steel with a bright, uncoated finish, this reamer features a helical flute geometry that promotes smooth cutting action and chip evacuation. The small end diameter measures 0.3971 inches and the large end measures 0.5050 inches, providing the precise taper needed for accurate pin-fit assemblies. Overall length is 7.1875 inches with a 5.1875-inch flute length and a straight shank diameter of 0.4375 inches. It is suited for use in manual or machine operations by machinists and toolroom professionals.

This reamer is used in general-purpose metalworking applications where taper pin holes must be sized, finished, or corrected to a 1:48 taper rate. Typical install scenarios include machine assembly, shaft-to-hub connections, and fixture work where taper pins are used as locating or locking elements. Right-hand cutting direction with a left-hand spiral flute promotes clean, chatter-resistant cuts in ferrous and non-ferrous materials. Sold individually, this tool is appropriate for both production and maintenance environments.

Key Features

• Size 8 taper pin profile with a 1:48 taper rate for standard pin-fit applications
• High speed steel construction provides durability across a range of workpiece materials
• Helical flute design promotes smooth chip flow and reduced cutting chatter
• Right-hand cutting direction with left-hand spiral for controlled material removal
• Bright, uncoated finish suitable for general-purpose hole finishing work
• Straight shank at 0.4375 inches diameter for compatibility with standard drill chucks and holders

Compatibility

Designed as a general-purpose taper pin reamer for use in standard size 8 taper pin applications following a 1:48 taper rate. Compatible with straight-shank toolholders and drill chucks accepting a 0.4375-inch shank diameter.

Installation Notes

This tool is installed and operated by machinists using manual drill presses, milling machines, or hand-held drilling equipment. Always secure the workpiece and ensure the spindle or chuck is properly tightened before operation. Power down all equipment before changing tooling. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish quality.