{"product_id":"norton-69957308029-carbide-rotary-bur-ball-nose-cone-3-8-in","title":"Norton 69957308029 Carbide Rotary Bur Ball Nose Cone 3\/8 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe NORTON 69957308029 is a double-cut tungsten carbide rotary bur with a ball nose cone head profile, designed for aggressive material removal and contouring in tight or curved workspaces. With a 3\/8-inch cutting diameter and a 1-3\/16-inch length of cut, this bur handles a wide range of ferrous and non-ferrous metals at up to 25,000 RPM. The 1\/4-inch shank fits standard die grinder and rotary tool chucks used daily in fabrication, HVAC ductwork, plumbing rough-in, and electrical enclosure work. Machinists, pipefitters, and sheet metal workers rely on double-cut geometry for faster stock removal with moderate surface finish.\u003c\/p\u003e\n\u003cp\u003eThis bur suits applications involving 300 and 400 series stainless steel, cast iron, copper, hard and soft carbon steel, titanium, and tool steel. It is well suited for deburring drilled or punched holes, porting and blending weld joints, shaping curved surfaces, and cleaning up casting flash. The ball nose cone shape is particularly effective for profiling concave contours and working into recessed areas where flat or cylindrical bur profiles cannot reach. Typical use environments include metal fabrication shops, mechanical rooms, and field service work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-cut tooth style for faster metal removal and reduced loading compared to single-cut geometry\u003c\/li\u003e\n  \u003cli\u003eTungsten carbide head construction provides hardness and heat resistance across demanding materials\u003c\/li\u003e\n  \u003cli\u003eBall nose cone profile designed for contouring concave surfaces and blending curved geometry\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch cutting diameter with 1-3\/16-inch cut length suits medium-scale deburring and shaping tasks\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch shank diameter fits standard die grinders and rotary tools\u003c\/li\u003e\n  \u003cli\u003eRated to 25,000 RPM maximum for use with high-speed pneumatic and electric rotary tools\u003c\/li\u003e\n  \u003cli\u003eUncoated head — compatible with a broad range of material types without coating interaction concerns\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with ferrous and non-ferrous metals including 300 series stainless, 400 series stainless, cast iron, copper, hard carbon steel, soft carbon steel, titanium, and tool steel. Fits any die grinder or rotary tool accepting a 1\/4-inch shank. Industry specification SL-3.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use of rotary burs should be performed by qualified machinists, fabricators, or trade professionals familiar with rotary tool operation. Verify the tool is fully powered down and the collet is released before inserting or removing the bur. Always confirm the tool RPM rating meets or exceeds the bur maximum of 25,000 RPM before operation, and use appropriate eye protection and gloves when working with carbide burs on metal stock. Secure the workpiece to prevent movement during material removal.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustry Specification\u003c\/strong\u003e: SL-3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Shape\u003c\/strong\u003e: Ball Nose Cone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-3\/16 inches (1.1875 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-15\/16 inches (2.9375 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Material\u003c\/strong\u003e: Tungsten Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Coating\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTooth Style\u003c\/strong\u003e: Double Cut\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 25,000\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: 300 Series Stainless, 400 Series Stainless, Cast Iron, Copper, Hard Carbon Steel, Soft Carbon Steel, Titanium, Tool Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.07 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: NORTON\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 69957308029\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NORTON","offers":[{"title":"Default Title","offer_id":51541896298802,"sku":"69957308029","price":45.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9e4e66e35444254972d295160bb8218d.jpg?v=1785887555","url":"https:\/\/voomisupply.com\/products\/norton-69957308029-carbide-rotary-bur-ball-nose-cone-3-8-in","provider":"Voomi Supply","version":"1.0","type":"link"}