Value Collection 516178 Polishing Bob Ball 1in Wool Felt

Product Description

The VALUE COLLECTION 516178 is a ball-shaped mounted polishing bob designed for precision surface finishing, deburring, and polishing work on metal, wood, and similar materials. Constructed from hard-density wool felt, this bob delivers consistent, controlled polishing action on contoured surfaces, bores, and cavities where flat abrasive tools cannot reach. The 1/4 inch shank mounts directly into standard die grinders, rotary tools, and flex-shaft machines. With a maximum diameter of 1 inch and a head length of 1 inch, it is sized for moderate-scale finishing tasks. Machinists, toolmakers, and general fabricators install this type of accessory for final-stage polishing and surface preparation.

This mounted polishing bob is suited for use in machine shops, fabrication environments, and maintenance settings where controlled polishing of internal surfaces, recesses, or curved geometries is required. The hard felt density makes it appropriate for work where firm contact and minimal deflection are needed, such as polishing die cavities, mold surfaces, or precision-machined bores. It fits standard 1/4 inch collets found on most die grinders and rotary tools in common shop use.

Key Features

• Ball shape provides full contact on curved, concave, and irregular surfaces
• Hard-density wool felt construction resists deflection under moderate polishing pressure
• 1/4 inch shank diameter fits standard die grinder and rotary tool collets
• 1 inch maximum diameter suited for moderate bore and cavity polishing
• 2 inch shank length provides reach into recessed work areas
• Lightweight at 0.031 pounds for extended use with minimal tool fatigue

Compatibility

Designed for use with die grinders, rotary tools, and flex-shaft machines equipped with a standard 1/4 inch collet. Confirm tool RPM rating is appropriate for the bob diameter before use.

Installation Notes

Installation is performed by inserting the 1/4 inch shank into the collet of a compatible rotary tool or die grinder and tightening securely per the tool manufacturer's specification. Ensure the tool is powered off and unplugged before mounting or removing the bob. Do not exceed the maximum RPM rating appropriate for a 1 inch diameter mounted bob. Inspect the felt head for wear or separation before each use and replace if the bob shows signs of deterioration.