{"product_id":"value-collection-sc85606721-er20-collet-chuck-1-in-straight","title":"Value Collection SC85606721 ER20 Collet Chuck 1 in Straight","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION SC85606721 is an ER20 collet chuck designed for precision toolholding in CNC machining centers, milling machines, and drill presses. It features a straight shank with a 1 inch shank diameter and delivers a Total Indicator Runout (TIR) of 0.0004 inches, making it suitable for applications where concentricity and repeatability are critical. The ER20 collet system is one of the most widely used standards in the industry, offering a broad range of collet sizes to accommodate various tool shank diameters. Machinists and toolroom technicians install this chuck as a direct interface between the spindle and cutting tool.\u003c\/p\u003e\n\u003cp\u003eThis collet chuck is intended for use in machine shops, production facilities, and toolroom environments running ER20-compatible spindles. It is well suited for light-to-medium milling, drilling, tapping, and reaming operations where low runout is required for part accuracy. The 1 inch projection and 3.75 inch overall length make it appropriate for standard reach applications without excessive overhang. Trade machinists, CNC setup technicians, and toolroom operators will find it fits standard ER20 collet nut assemblies available from multiple manufacturers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eER20 collet system for broad collet size availability and industry-standard compatibility\u003c\/li\u003e\n  \u003cli\u003e0.0004 inch TIR for consistent concentricity in precision machining operations\u003c\/li\u003e\n  \u003cli\u003e1 inch straight shank diameter for direct spindle or toolholder installation\u003c\/li\u003e\n  \u003cli\u003e1 inch projection supports standard tool reach without excessive overhang\u003c\/li\u003e\n  \u003cli\u003e3.75 inch overall length suits typical vertical and horizontal machining center setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard ER20 collet chuck compatible with ER20 collet nuts and ER20 series collets. Suitable for machine spindles and toolholders accepting a 1 inch straight shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before mounting or removing the collet chuck. Use a calibrated torque wrench and the appropriate ER20 collet nut spanner to seat the collet nut properly — do not overtighten or use impact tools on the collet nut. Verify TIR with a dial test indicator after installation before resuming cutting operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet System\u003c\/strong\u003e: ER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Series\u003c\/strong\u003e: ER20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTIR\u003c\/strong\u003e: 0.0004 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions (L x W x H)\u003c\/strong\u003e: 5.59 inches x 1.38 inches x 1.38 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.836 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112808\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: SC85606721\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51708894052658,"sku":"SC85606721","price":106.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/869090dfe7271eab80418a0d09b2e5e0.jpg?v=1788448929","url":"https:\/\/voomisupply.com\/products\/value-collection-sc85606721-er20-collet-chuck-1-in-straight","provider":"Voomi Supply","version":"1.0","type":"link"}