Value Collection 557u 9 Taper Pin Reamer Size 9 Hss

Product Description

The VALUE COLLECTION 557u 9 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 reamer delivers reliable cutting performance in general-purpose machining applications. The spiral flute geometry with left-hand spiral and right-hand cut provides smooth chip evacuation and consistent bore finish. The small end diameter measures 0.4805 inches and the large end measures 0.6066 inches, giving a taper rate of 1:48. Overall length is 8.3125 inches with a flute length of 6.0625 inches. The square shank measures 0.5625 inches in diameter for secure toolholder engagement.

This reamer is suited for machine shops, maintenance facilities, and production environments where taper pin holes must be precisely sized or refinished. Typical applications include fitting taper pins in mechanical assemblies, reaming worn or oversized holes back to specification, and preparing bores in shafts, collars, and hubs. It is a general-purpose tool appropriate for use in drill presses, milling machines, or hand-held setups where controlled feed rates can be maintained.

Key Features

• High-speed steel construction for durability across a range of workpiece materials
• Spiral flute geometry with left-hand spiral promotes smooth chip flow and reduced chatter
• Right-hand cutting direction compatible with standard machine spindle rotation
• Taper rate of 1:48 matches standard taper pin specifications
• Bright, uncoated finish suitable for general-purpose hole finishing operations
• Square shank provides positive drive and prevents slipping in toolholders

Compatibility

Designed as a standard replacement or new-installation taper pin reamer for size 9 taper pin applications in general-purpose machining and mechanical assembly operations.

Installation Notes

Taper pin reamers are typically used by machinists and maintenance technicians. Secure the workpiece firmly before reaming and apply cutting fluid appropriate for the workpiece material to extend tool life and improve finish quality. Use a controlled, consistent feed rate to avoid tool deflection or bell-mouthing the bore. Always clear chips frequently when reaming deep holes.