{"product_id":"parlec-5umer20-0312-er20-collet-5-16-inch","title":"Parlec 5UMER20-0312 ER20 Collet 5\/16 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PARLEC 5UMER20-0312 is an ER20 series collet designed for precision workholding in CNC machining and milling applications. It accepts a nominal collet size of 0.3125 inches (5\/16 inch) with a minimum collet capacity of 0.273 inches, giving it a working clamping range suited to a variety of round shank tooling. The collet holds a Total Indicator Runout (TIR) of 0.0002 inches, making it appropriate for applications where concentricity and repeatability are critical. Overall length is 1.24 inches and overall diameter is 0.827 inches. Licensed machinists and CNC setup technicians are the primary installers of this component.\u003c\/p\u003e\n\u003cp\u003eThis ER20 collet is suited for use in standard ER20-compatible collet chucks and tool holders mounted in vertical machining centers, horizontal machining centers, and CNC milling machines. The ER20 standard is one of the most widely used collet systems in production and job-shop environments, making this collet a common replacement or additional-capacity item for shops running 5\/16-inch shank end mills, drills, or reamers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eER20 series collet with 0.3125 inch (5\/16 inch) nominal collet size\u003c\/li\u003e\n  \u003cli\u003eMinimum collet capacity of 0.273 inches for range clamping flexibility\u003c\/li\u003e\n  \u003cli\u003eTIR of 0.0002 inches for high-precision, low-runout toolholding\u003c\/li\u003e\n  \u003cli\u003eCompact overall length of 1.24 inches fits standard ER20 chuck pockets\u003c\/li\u003e\n  \u003cli\u003eOverall diameter of 0.827 inches consistent with ER20 dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with ER20-compatible collet chucks and tool holders conforming to the ER20 collet standard.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a machinist or CNC setup technician. The collet should be seated fully into the ER20 collet nut before insertion into the chuck body  -  never torque a collet into the chuck without the toolholder nut engaged. Ensure the machine spindle is fully stopped and the tool changer or spindle lock is engaged before changing collets. Inspect the collet bore and seating taper for chips or debris before assembly to maintain rated TIR performance.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Series\u003c\/strong\u003e: ER20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Size (Decimal Inch)\u003c\/strong\u003e: 0.3125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Size (Fractional Inch)\u003c\/strong\u003e: 5\/16 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Collet Capacity\u003c\/strong\u003e: 0.273 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.24 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Diameter\u003c\/strong\u003e: 0.827 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTIR\u003c\/strong\u003e: 0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.19 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: PARLEC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5UMER20-0312\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PARLEC","offers":[{"title":"Default Title","offer_id":51964354462002,"sku":"5UMER20-0312","price":82.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/32fd38707446b66c888aa18d5f0f64ee.jpg?v=1789949005","url":"https:\/\/voomisupply.com\/products\/parlec-5umer20-0312-er20-collet-5-16-inch","provider":"Voomi Supply","version":"1.0","type":"link"}