{"product_id":"hertel-1-203-0800-4-jaw-lathe-chuck-8-inch-plain-back","title":"Hertel 1-203-0800 4-jaw Lathe Chuck 8 Inch Plain Back","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 1-203-0800 is a self-centering 4-jaw manual lathe chuck designed for use on metalworking lathes in production, toolroom, and job-shop environments. The chuck measures 8 inches in diameter with a plain back mount and is rated to 2,500 RPM maximum. Constructed from cast iron, it provides rigid workholding with an axial runout of 0.0010 inches and a radial runout of 0.0016 inches. The reversible jaws cover a jaw capacity range from 5\/32 inches minimum up to 7-7\/8 inches maximum, making it suitable for a wide variety of round and symmetrical workpieces. Installation and use require a qualified machinist or toolroom technician.\u003c\/p\u003e\n\u003cp\u003eThis chuck is intended for manual lathe applications in machine shops, maintenance facilities, and manufacturing environments where consistent, repeatable workholding is required. The self-centering action allows for fast, accurate mounting of round stock without individual jaw adjustment. The plain back mount style is compatible with lathe spindles that accept a back plate fitted to the specific spindle nose configuration. The 8-inch diameter size is commonly used on mid-size engine lathes and toolroom lathes handling medium-diameter workpieces.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSelf-centering 4-jaw design for fast, repeatable chucking of round and symmetrical stock\u003c\/li\u003e\n  \u003cli\u003e8-inch chuck diameter with a maximum jaw capacity of 7-7\/8 inches\u003c\/li\u003e\n  \u003cli\u003eRated to 2,500 RPM maximum for general turning operations\u003c\/li\u003e\n  \u003cli\u003eReversible jaws extend capacity range from 5\/32 inches to 7-7\/8 inches\u003c\/li\u003e\n  \u003cli\u003eAxial runout of 0.0010 inches and radial runout of 0.0016 inches for precision workholding\u003c\/li\u003e\n  \u003cli\u003eCast iron body construction for rigidity and long service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use on manual lathes equipped with a plain back spindle nose that accepts a separately fitted back plate. Back plate must be sourced and machined to match the specific lathe spindle nose configuration; a back plate is not included.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician. Always power down and lock out the lathe before mounting or removing the chuck. A properly fitted back plate is required to mount this chuck to the lathe spindle; back plate bore and register must be machined to match the spindle nose before use. Verify runout with a dial indicator after mounting and before operating the machine.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChuck Diameter\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Jaws\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChuck Type\u003c\/strong\u003e: Self-Centering\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Plain Back\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 2,500\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Jaw Capacity\u003c\/strong\u003e: 7-7\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Jaw Capacity\u003c\/strong\u003e: 5\/32 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eJaw Height\u003c\/strong\u003e: 1-53\/64 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReversible Jaws\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThrough-Hole Diameter\u003c\/strong\u003e: 2.1654 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAxial Runout\u003c\/strong\u003e: 0.0010 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRadial Runout\u003c\/strong\u003e: 0.0016 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Length\u003c\/strong\u003e: 2-61\/64 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Cast Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 9.84 inches x 9.84 inches x 8.27 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 34 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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1-203-0800\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51727084192050,"sku":"1-203-0800","price":977.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5c242e6bad380bce67bdbd800b1777e1.jpg?v=1788673046","url":"https:\/\/voomisupply.com\/products\/hertel-1-203-0800-4-jaw-lathe-chuck-8-inch-plain-back","provider":"Voomi Supply","version":"1.0","type":"link"}