{"product_id":"value-collection-231-4732-r8-collet-1-2-inch-steel","title":"Value Collection 231-4732 R8 Collet 1\/2 Inch Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 231-4732 is a 1\/2 inch R8 collet machined from steel for use in milling machines equipped with an R8 spindle taper. It accepts 1\/2 inch round shank tooling and secures via a 7\/16-20 drawbar thread. The collet holds a total indicator runout (TIR) of 0.0007 inches, providing the concentricity needed for accurate milling, drilling, and boring operations. This type of collet is a standard consumable in machine shop environments and is typically installed and changed by machinists or tool room technicians during setup.\u003c\/p\u003e\n\u003cp\u003eR8 collets are used in Bridgeport-style vertical knee mills and other milling machines built around the R8 spindle standard. This 1\/2 inch size is suited for holding end mills, drill bits, reamers, and other 1\/2 inch shank cutting tools. It fits into the spindle bore and is drawn up with a drawbar threaded to the 7\/16-20 standard. Typical applications include general-purpose machining in job shops, maintenance facilities, and vocational or industrial training environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/2 inch bore diameter accepts standard 1\/2 inch shank tooling\u003c\/li\u003e\n  \u003cli\u003eR8 taper profile fits Bridgeport-style and compatible vertical milling machine spindles\u003c\/li\u003e\n  \u003cli\u003e7\/16-20 drawbar thread matches the standard R8 drawbar specification\u003c\/li\u003e\n  \u003cli\u003e0.0007 inch TIR for reliable concentricity during cutting operations\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability under normal milling loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard tooling collet for milling machines with an R8 spindle taper and a 7\/16-20 drawbar thread.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a machinist or tool room technician. Before changing collets, power down the milling machine and bring the spindle to a complete stop. Insert the collet into the spindle bore, load the cutting tool to the appropriate depth, and tighten the drawbar by hand before applying final torque with a wrench while holding the spindle brake. Avoid over-tightening the drawbar, as this can deform the collet bore and degrade runout performance over time.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Type\u003c\/strong\u003e: R8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrawbar Thread Size\u003c\/strong\u003e: 7\/16-20 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Indicator Runout (TIR)\u003c\/strong\u003e: 0.0007 inches\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: 0.65 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 231-4732\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51721010479410,"sku":"231-4732","price":26.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d1f9dc2e84fab00fae6172e115f9005b.jpg?v=1788572227","url":"https:\/\/voomisupply.com\/products\/value-collection-231-4732-r8-collet-1-2-inch-steel","provider":"Voomi Supply","version":"1.0","type":"link"}