Value Collection 558u 1 Taper Pin Reamer No. 1 Pin

Product Description

The VALUE COLLECTION 558u 1 is a No. 1 taper pin reamer designed to enlarge, finish, and shape taper pin holes to precise tolerances. Made from high-speed steel with a bright, uncoated finish, this reamer features a helical flute geometry and a straight shank for use in standard drill presses, milling machines, or hand-held reaming operations. The right-hand cutting direction paired with a left-hand spiral flute helps pull chips away from the cutting edge during operation. With a small end diameter of 0.1447 inches and a large end diameter of 0.1798 inches, it is sized specifically for No. 1 taper pin applications at a 1:48 taper rate.

This reamer is suited for general-purpose hole finishing in maintenance, repair, and manufacturing environments where taper pin fits are required. Common applications include aligning and securing mechanical components such as shafts, hubs, and linkages. The 1.6875-inch flute length and 2.9375-inch overall length make it practical for use in moderate-depth holes typical of light to medium industrial work. Machinists, tool and die makers, and maintenance technicians working with standard taper pin assemblies will find this a practical, dependable choice.

Key Features

• No. 1 taper pin size with a 1:48 taper rate for standardized pin hole finishing
• High-speed steel construction provides durability across a range of workpiece materials
• Helical flute geometry with left-hand spiral improves chip evacuation during cutting
• Right-hand cutting direction for conventional reaming operations
• Bright, uncoated finish suitable for general-purpose use without additional surface treatment
• Straight shank at 0.1875 inches diameter fits standard collets and chucks

Compatibility

Designed as a general-purpose replacement or standard-stock reamer for No. 1 taper pin hole applications in conventional machine shop and maintenance settings.

Installation Notes

This reamer is installed by machinists and maintenance technicians using a drill press, milling machine, or reaming handle with appropriate speed and feed settings for the workpiece material. Secure the straight shank firmly in a collet or drill chuck before use, and ensure the workpiece is clamped to prevent movement. Use a cutting fluid appropriate for the workpiece material to extend tool life and improve finish quality. Inspect the reamed hole with a taper pin gauge after operation to confirm proper fit before pressing the pin.