{"product_id":"starrett-53067-center-finder-0-25-inch-ball-contact","title":"Starrett 53067 Center Finder 0.25 Inch Ball Contact","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 53067 is a mechanical center finder designed for locating the center of round stock, holes, and cylindrical workpieces on mills, lathes, and drill presses. It uses a spring-loaded ball contact head with a 0.25-inch diameter to detect runout visually as the spindle rotates, allowing the operator to walk the tool into center without electronic readouts or edge-finding electronics. The 3\/8-inch shank fits standard collets and drill chucks. The body is constructed from steel for durability in shop environments. This tool is a standard in the toolkits of machinists, toolmakers, and setup technicians.\u003c\/p\u003e\n\u003cp\u003eThe 53067 is suited for manual milling machines, CNC setups requiring manual edge-finding, and drill press centering operations in both production and job-shop settings. Its mechanical ball contact operation requires no batteries or calibration, making it a low-maintenance option for everyday centering tasks. The single-end configuration keeps the setup straightforward. Typical users include machinists and metalworking professionals who need a fast, repeatable method for spindle-to-workpiece center alignment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBall contact head provides smooth, consistent runout detection during spindle rotation\u003c\/li\u003e\n  \u003cli\u003e0.25-inch head diameter suits tight-clearance centering applications\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch shank fits standard collets and keyless drill chucks\u003c\/li\u003e\n  \u003cli\u003eMechanical operation requires no power source or electronics\u003c\/li\u003e\n  \u003cli\u003eSingle-end design for straightforward chuck mounting\u003c\/li\u003e\n  \u003cli\u003eSteel construction for long service life in machine shop conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard fit for milling machines, drill presses, and CNC machining centers equipped with collets or chucks accepting a 3\/8-inch shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall the 53067 in a collet or drill chuck rated for a 3\/8-inch shank and tighten securely before use. Power down or engage the E-stop on CNC equipment before inserting or removing the tool from the spindle. Operate the spindle at a low RPM when using the ball contact method to visually detect runout. Do not use this tool as a cutting instrument.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.25 inches (6.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Contact Type\u003c\/strong\u003e: Ball\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Single\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Type\u003c\/strong\u003e: Mechanical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.016 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: STARRETT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 53067\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542266183986,"sku":"53067","price":18.8,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1ee863b1a0ba11800ca0f1256fbc7764.jpg?v=1785896803","url":"https:\/\/voomisupply.com\/products\/starrett-53067-center-finder-0-25-inch-ball-contact","provider":"Voomi Supply","version":"1.0","type":"link"}