{"product_id":"sumitomo-18rbw0r-grooving-insert-gcmn3125gg-ac830p-carbide","title":"Sumitomo 18RBW0R Grooving Insert GCMN3125GG AC830P Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SUMITOMO 18RBW0R is a solid carbide grooving insert in the GND series, designed for precision external grooving and parting operations on CNC lathes and turning centers. This double-ended, neutral-hand insert carries a 0.125 inch (3.18 mm) cutting width and a maximum depth of cut of 0.750 inch (19.05 mm). The AC830P grade features a CVD coating process that delivers wear resistance and thermal stability when cutting stainless steel and carbon steel. A positive rake angle of 5 degrees and the GG chip breaker geometry support controlled chip evacuation and reduced cutting forces across a range of feed and speed conditions.\u003c\/p\u003e\n\u003cp\u003eThe 18RBW0R is suited for grooving and parting operations on stainless steel and steel workpieces in both production and job-shop turning environments. The GCMN3125GG insert style is a standard format compatible with GND-series toolholders used on most CNC turning platforms. The 0.20 mm corner radius (0.0079 inch) makes it appropriate for applications requiring a near-sharp corner profile. This insert is typically specified by machinists and CNC operators running ferrous materials where edge retention and chip control are priorities.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide substrate with AC830P grade CVD coating for extended tool life on stainless steel and steel\u003c\/li\u003e\n  \u003cli\u003e0.125 inch (3.18 mm) cutting width suits standard narrow-groove and parting applications\u003c\/li\u003e\n  \u003cli\u003eMaximum depth of cut 0.750 inch (19.05 mm); effective depth-of-cut range 0.300 to 1.000 inch\u003c\/li\u003e\n  \u003cli\u003eDouble-ended insert geometry provides two usable cutting edges per insert\u003c\/li\u003e\n  \u003cli\u003eGG chip breaker promotes positive chip control and reduced built-up edge\u003c\/li\u003e\n  \u003cli\u003ePositive rake angle (5 degrees) lowers cutting forces on tough ferrous materials\u003c\/li\u003e\n  \u003cli\u003eConforms to ANSI and ISO 13399 standards; ANSI code GCMN3125R0.5-GG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in GND-series grooving toolholders accepting GCMN3125-style inserts. Primary workpiece materials are stainless steel (ISO material code M) and steel (ISO material code P).\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInsert seating and clamping should be performed by a qualified machinist following the toolholder manufacturer's torque specifications for the clamping screw. Ensure the insert pocket and locating surfaces are clean and free of chips before seating the insert. Power down and lock out the machine spindle before changing inserts. Do not exceed the recommended depth-of-cut range for this insert style, as doing so may cause insert fracture or toolholder damage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: GCMN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 3125\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Width\u003c\/strong\u003e: 0.125 inch (3.18 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.750 inch (19.05 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDepth of Cut Range\u003c\/strong\u003e: 0.300 to 1.000 inch (10.00 to 20.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Height\u003c\/strong\u003e: 0.150 inch (3.81 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 0.831 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Width\u003c\/strong\u003e: 0.125 inch (3.18 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.831 inch (21.11 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0079 inch (0.20 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 5 degrees (positive)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: GG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: AC830P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: CVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Finish\u003c\/strong\u003e: Coated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: GND\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull Radius\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLead Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Seat Size\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Double\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Stainless Steel, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eANSI Code\u003c\/strong\u003e: GCMN3125R0.5-GG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Standard\u003c\/strong\u003e: ISO 13399\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: SUMITOMO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 18RBW0R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51739685421362,"sku":"18RBW0R","price":160.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/951d2ff456a2ceebfb0da99bf661d8f0_c4e61d29-6f93-4808-b7e2-e73cc5357bb3.jpg?v=1788817809","url":"https:\/\/voomisupply.com\/products\/sumitomo-18rbw0r-grooving-insert-gcmn3125gg-ac830p-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}