{"product_id":"precision-twist-drill-8553065-turning-insert-cnmg-12","title":"Precision Twist Drill 8553065 Turning Insert Cnmg 12","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 8553065 is a double-sided negative turning insert designed for metal cutting and lathe operations. Manufactured in grade T8415, this CNMG-style insert features an 80-degree rhomboid geometry with an inscribed circle diameter of 12.7 mm and a thickness of 4.76 mm. The 0.8 mm nose radius and RM chip-breaker with rounded cutting edges support controlled chip evacuation during turning operations. Indexing accuracy meets ISO tolerance class M. Licensed machinists and CNC operators install these inserts on compatible indexable toolholders in production and job-shop environments.\u003c\/p\u003e\u003cp\u003eThis insert is suited for general turning applications on ferrous and non-ferrous materials where a negative rake geometry is required. The T8415 grade is formulated for turning operations that demand wear resistance and edge stability. The RM chip-breaker geometry accommodates medium-depth cutting passes and is a common choice in both manual lathe and CNC turning center setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDouble-sided negative insert design — doubles usable cutting edges per insert\u003c\/li\u003e\n\u003cli\u003e80-degree rhomboid (CNMG) geometry for versatile turning applications\u003c\/li\u003e\n\u003cli\u003eInscribed circle diameter: 12.7 mm with 4.76 mm insert thickness\u003c\/li\u003e\n\u003cli\u003e0.8 mm nose radius for balanced surface finish and edge strength\u003c\/li\u003e\n\u003cli\u003eRM chip-breaker with rounded cutting edges for controlled chip formation\u003c\/li\u003e\n\u003cli\u003eISO tolerance class M indexing accuracy for consistent, repeatable positioning\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit insert for indexable turning toolholders accepting CNMG-style inserts with a 12 mm inscribed circle diameter in standard negative-rake toolholder pockets.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is secured in the turret or tool post before seating or indexing the insert. Use the appropriate torx or clamp screw specified by the toolholder manufacturer to achieve correct clamping force — do not overtighten by feel alone. Follow the toolholder manufacturer's indexing procedure to confirm the insert is fully seated before resuming cutting operations.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: T8415\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: CNMG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeometry\u003c\/strong\u003e: 80-degree rhomboid, double-sided negative\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle Diameter\u003c\/strong\u003e: 12.7 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 4.76 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNose Radius\u003c\/strong\u003e: 0.8 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip-Breaker\u003c\/strong\u003e: RM with rounded cutting edges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Tolerance Class\u003c\/strong\u003e: M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold As\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: PRECISION TWIST DRILL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 8553065\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51343711994162,"sku":"8553065","price":138.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310538669.jpg?v=1782023986","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-8553065-turning-insert-cnmg-12","provider":"Voomi Supply","version":"1.0","type":"link"}