{"product_id":"seco-75056399-mwln-neg-rake-turning-toolholder-5-8-shank","title":"Seco 75056399 Mwln Neg Rake Turning Toolholder 5\/8 Shank","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SECO 75056399 is a right-hand MWLN-style indexable turning toolholder designed for external turning operations on CNC lathes and manual turning centers. It uses a clamp and pin holding method to secure WN..33. series inserts at a negative rake angle of -5.44 to -6 degrees, providing stable, rigid cutting with controlled chip formation. The shank measures 0.625 inches wide by 0.625 inches tall, and the overall length is 4 inches. Licensed machinists and CNC operators install this holder in production and job-shop turning applications where insert security and repeatability are priorities.\u003c\/p\u003e\u003cp\u003eThis toolholder is suited for right-hand external turning on a broad range of workpiece materials, including steel, stainless, cast iron, aluminum, non-ferrous alloys, and high-temperature alloys, corresponding to material codes H, K, M, N, P, and S. The negative rake geometry makes it appropriate for interrupted cuts and harder materials where edge strength is critical. The 4-inch overall length and 0.875-inch back-of-bar to cutting edge dimension position it as a standard shank holder for common tool turret and block tooling setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMWLN toolholder style with negative rake angle (-5.44 to -6 degrees) for strong, stable cutting edge engagement\u003c\/li\u003e\n\u003cli\u003eClamp and pin insert holding method for secure, repeatable insert positioning\u003c\/li\u003e\n\u003cli\u003eCompatible with WN..33. series inserts with a 3\/8 inch (0.375 inch) inscribed circle\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction with 0.625 inch x 0.625 inch square shank\u003c\/li\u003e\n\u003cli\u003eUniversal workpiece material compatibility covering steel, stainless, cast iron, aluminum, non-ferrous, and superalloys\u003c\/li\u003e\n\u003cli\u003eSteel toolholder construction for rigidity and long-term dimensional stability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with WN..33. series indexable inserts with a compatible insert size code of WN33 and a 3\/8 inch inscribed circle. Part of the SECO Multiple Lock series. Also referenced under catalog number MWLNR L103A.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis holder is installed by machinists on CNC or manual lathes in a turret, gang plate, or block toolholder position. Before changing inserts or mounting the holder, power down the machine and engage the spindle lock per standard machine tool safety procedures. Use calibrated torque tools when tightening the clamp screw to avoid cracking the insert seat. Verify tool centerline height against the spindle centerline before taking the first cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eToolholder Style\u003c\/strong\u003e: MWLN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand of Holder\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Negative\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: -5.44 to -6 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Width\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Height\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Length\u003c\/strong\u003e: 1.2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack of Bar to Cutting Edge\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: WN..33.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp and Pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Insert Size Code\u003c\/strong\u003e: WN33\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Universal (H, K, M, N, P, S)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToolholder Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Multiple Lock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SECO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 75056399\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SECO TOOLS","offers":[{"title":"Default Title","offer_id":51563179311410,"sku":"75056399","price":177.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2bac5061607b3d1141fd5fba9fd4f030.jpg?v=1786492352","url":"https:\/\/voomisupply.com\/products\/seco-75056399-mwln-neg-rake-turning-toolholder-5-8-shank","provider":"Voomi Supply","version":"1.0","type":"link"}