{"product_id":"sandvik-coromant-5746858-milling-insert-grade-3040-r390","title":"Sandvik Coromant 5746858 Milling Insert Grade 3040 R390","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 5746858 is a solid carbide milling insert in the R390 series, designed for high-performance shoulder milling operations. Coated with TiCN and Al2O3 via CVD process, this grade 3040 insert delivers wear resistance and thermal stability across demanding cutting conditions. The insert carries a parallelogram shape with a positive rake angle of 17 degrees and a corner radius of 0.0315 inches (0.80 mm). It features two cutting edges and is held in place by a screw-type clamping system. This insert is a right-hand, single-sided design with a KM chip breaker geometry optimized for controlled chip evacuation in steel, cast iron, and hard material applications.\u003c\/p\u003e\n\u003cp\u003eThe 5746858 is intended for use in R390 cutter bodies in both roughing and semi-finishing passes on steel, cast iron, and hard materials corresponding to ISO material grades P, K, and H. Typical applications include shoulder milling, pocket milling, and ramping cuts in CNC machining environments. The maximum depth of cut reaches 16.00 mm (0.6299 inches), making it suitable for moderate-to-aggressive material removal rates in production machining. The insert size code is 170408 and the ANSI\/ISO catalog designation is R390-17 04 08M-KM 3040. This product is commonly used by CNC machinists and tooling specialists in job shop and production environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 3040 solid carbide substrate with CVD-applied TiCN and Al2O3 coating for extended tool life\u003c\/li\u003e\n  \u003cli\u003ePositive rake angle of 17 degrees reduces cutting forces and heat buildup\u003c\/li\u003e\n  \u003cli\u003eKM chip breaker geometry controls chip formation across steel and cast iron workpieces\u003c\/li\u003e\n  \u003cli\u003eTwo cutting edges per insert for cost-effective indexing\u003c\/li\u003e\n  \u003cli\u003eCorner radius of 0.0315 inches (0.80 mm) minimizes edge chipping at entry and exit\u003c\/li\u003e\n  \u003cli\u003eCompatible with R390 cutter bodies for consistent, repeatable fitment in existing tooling setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Sandvik Coromant R390 series cutter bodies. ANSI and ISO code: R390-17 04 08M-KM 3040. Suitable for machining steel, cast iron, and hard materials (material grades P20, K30, H25).\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified CNC machinists or tooling technicians. Power down and lock out the spindle before indexing or replacing inserts. Use the appropriate torx or hex key to tighten the insert screw to the cutter body specification provided in the tool body documentation — do not overtighten or undertighten the clamping screw. Inspect the insert pocket and clamping screw for wear or debris before seating a new insert to ensure proper contact and runout.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Series\u003c\/strong\u003e: R390\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: 3040\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN and Al2O3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: CVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Parallelogram\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: R390\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 170408\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Positive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 17 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: KM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Corner Rounded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle or Double Sided\u003c\/strong\u003e: Single\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 90 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0315 inches (0.80 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.3780 inches (9.60 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1875 inches (4.76 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 0.6181 inches (15.70 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.3780 inches (9.60 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.6299 inches (16.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1614 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Cast Iron, Hard Material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: P20, K30, H25\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eANSI Code\u003c\/strong\u003e: R390-17 04 08M-KM 3040\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: R390-17 04 08M-KM 3040\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, ISO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23291601\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.22 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: SANDVIK COROMANT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5746858\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51727307243826,"sku":"5746858","price":433.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b5daa13ddd9448f735a6c994280f5304.jpg?v=1788676134","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5746858-milling-insert-grade-3040-r390","provider":"Voomi Supply","version":"1.0","type":"link"}