{"product_id":"r8-collet-for-milling-machines-12mm-chuck-holder-b","title":"R8 Collet For Milling Machines 12mm Chuck Holder Built From 65Mn Spring Steel Hardened To 55HRC With Precise Ground Tolerance 7\/16-20UNF Internal Thread Durable Tool Holder For Rock Solid Machining","description":"\u003cdiv\u003eR8 Milling Collet 12mm Holder in Hardened 65Mn Steel\u003cbr\u003e\n✔️ 12mm clamp, 7\/16-20UNF drawbar, 104mm length, 55HRC \u003cp\u003eThis R8 collet holder is a precision tool that fits milling machine spindles and converts a spindle hole to hold 12mm tooling securely. It's commonly used in CNC milling setups for tool changes and improved rigidity.\u003c\/p\u003e \u003cp\u003e✅ Clamping Diameter: 12mm \/ 0.47 inch\u003cbr\u003e✅ Drawbar Thread: 7\/16-20UNF\u003cbr\u003e✅ Material: 65Mn Spring Steel Hardened to 55HRC\u003cbr\u003e✅ Accuracy: 0.0005 inch (0.013 mm)\u003cbr\u003e✅ Total Length: 104mm \/ 4.09 inch\u003cbr\u003e✅ Top Diameter: 32.3mm \/ 1.27 inch\u003cbr\u003e✅ Bottom Diameter: 24.1mm \/ 0.95 inch\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is an R8 collet holder used for in milling machines?\u003c\/p\u003e\n\u003cp\u003e A handy, precise accessory that helps secure tooling and adapt spindles for solid machining.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSecurely clamps 12mm tooling in R8 spindle setups\u003c\/li\u003e\n\u003cli\u003e65Mn spring steel with 55HRC hardness for durability\u003c\/li\u003e\n\u003cli\u003e7\/16-20UNF internal thread fits standard drawbars\u003c\/li\u003e\n\u003cli\u003ePrecision ground to tight tolerances for repeatable results\u003c\/li\u003e\n\u003c\/ul\u003e\n✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49073686806763,"sku":"VXB07LBSNSQL","price":57.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/51hMQHZM69L.jpg?v=1784429676","url":"https:\/\/vxb.com\/products\/r8-collet-for-milling-machines-12mm-chuck-holder-b","provider":"VXB Bearings","version":"1.0","type":"link"}