{"product_id":"seco-02688855-square-shoulder-end-mill-1-1-4-in-3-flute","title":"Seco 02688855 Square-shoulder End Mill 1-1\/4 in 3 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SECO 02688855 is an indexable square-shoulder end mill from the Super Turbo series, designed for precision milling operations in metalworking and machining applications. Built around a cylindrical shank design, it accepts three XO.X 1204.. screw-held inserts and delivers a 90-degree lead angle for true square shoulders. With a cutting diameter of 1.25 inches, a maximum depth of cut of 0.433 inches, and a maximum spindle speed of 18,400 RPM, this tool is suited for demanding material removal on CNC milling machines. The through-coolant feature directs fluid directly to the cutting zone, extending insert life and improving chip evacuation in high-feed passes.\u003c\/p\u003e\u003cp\u003eThis end mill is intended for professional machinists and tooling technicians operating CNC vertical and horizontal milling centers. It is well-suited for square-shoulder profiling, slotting, and face milling operations in production and job-shop environments. The 1.25-inch cylindrical shank fits standard collet chucks and end mill holders sized for that bore diameter. The 7.69-inch overall length provides reach for deeper cavity work while the 6.10-inch shank length allows secure gripping in the spindle. Insert indexing is fast and repeatable, keeping downtime low during long production runs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1.25-inch cutting diameter with 0.433-inch maximum depth of cut for square-shoulder milling\u003c\/li\u003e\n\u003cli\u003e3-insert configuration using XO.X 1204.. inserts secured by screw clamping\u003c\/li\u003e\n\u003cli\u003e90-degree lead angle produces true square shoulders and perpendicular walls\u003c\/li\u003e\n\u003cli\u003eThrough-coolant capability improves chip evacuation and insert longevity\u003c\/li\u003e\n\u003cli\u003eMaximum spindle speed of 18,400 RPM supports high-productivity cutting conditions\u003c\/li\u003e\n\u003cli\u003eSuper Turbo series cutter style R217.69-12A for consistent indexable performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eAccepts three XO.X 1204.. series inserts secured by screw clamping. The 1.25-inch cylindrical shank is compatible with standard end mill holders and collet chucks designed for 1-1\/4-inch bore diameters.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by qualified machinists or tooling technicians with the spindle fully stopped and the machine in a locked-out, de-energized state per facility lockout-tagout procedures. Torque insert screws using the correct Torx or hex key supplied or recommended by the tooling manufacturer. Verify shank seating depth and runout with a dial indicator before commencing a cut. Inspect insert seats and clamping screws for wear or debris before each insert change.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.433 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 7.69 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 6.10 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Length\u003c\/strong\u003e: 1.57 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Inserts\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: XO.X 1204..\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Angle\u003c\/strong\u003e: 90 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 18,400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Super Turbo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutter Style\u003c\/strong\u003e: R217.69-12A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Number\u003c\/strong\u003e: R217.69-01.25-0-12-3AN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.65 pounds\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: 02688855\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SECO TOOLS","offers":[{"title":"Default Title","offer_id":51559635255602,"sku":"02688855","price":695.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3425e7ef65319582e11eb574e08e0f42.jpg?v=1786437135","url":"https:\/\/voomisupply.com\/products\/seco-02688855-square-shoulder-end-mill-1-1-4-in-3-flute","provider":"Voomi Supply","version":"1.0","type":"link"}