{"product_id":"widia-2825304-indexable-boring-bar-3-8-in-shank-solid-carbide","title":"Widia 2825304 Indexable Boring Bar 3\/8 in Shank Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe WIDIA 2825304 is a solid carbide indexable boring bar in the QCBI series, designed for internal boring operations on CNC lathes and machining centers. It accepts a triangular insert secured by a screw-clamp holding method and delivers a positive rake geometry with a radial rake of 5 degrees for clean, efficient chip removal. The bar has a 0.438-inch minimum bore diameter and a 6-inch overall length, making it well suited for reaching into deeper bores while maintaining rigidity. A 0.125-inch coolant-through hole supports direct coolant delivery to the cutting zone, extending insert life and improving chip evacuation during continuous cuts.\u003c\/p\u003e\n\u003cp\u003eThis boring bar is intended for use in production and job-shop environments where quick-change boring setups are required. The QCBI toolholder style is compatible with standard quick-change boring systems. It accepts a TP..21505 series triangular insert with a 1\/4-inch inscribed circle and a 0.094-inch insert thickness. The bar is rated for universal workpiece material, making it appropriate across a broad range of ferrous and non-ferrous applications. Insert is not included and must be sourced separately.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction provides rigidity and vibration resistance in small-diameter bore applications\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design with 0.125-inch coolant hole for direct cutting-zone flood or high-pressure coolant\u003c\/li\u003e\n  \u003cli\u003eScrew-clamp insert holding method for secure positive insert location and repeatable tool offsets\u003c\/li\u003e\n  \u003cli\u003ePositive rake geometry with 5-degree radial rake reduces cutting forces and heat generation\u003c\/li\u003e\n  \u003cli\u003eCompatible with TP..21505 series triangular inserts with 1\/4-inch inscribed circle\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut orientation; multi-use toolholder suitable across universal workpiece materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with TP..21505 series triangular indexable inserts with a 1\/4-inch inscribed circle and 0.094-inch insert thickness. Insert is not included. Fits standard 3\/8-inch shank quick-change boring setups using the QCBI toolholder style.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before inserting or removing the toolholder from the turret or boring head. Verify shank diameter compatibility with the tool block or quick-change holder before mounting. Torque the insert-clamping screw to the insert manufacturer specification using the correct Torx or hex key; do not substitute tools or exceed the specified fastener torque.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eToolholder Style\u003c\/strong\u003e: QCBI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: QCBI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.438 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Bore Depth\u003c\/strong\u003e: 2.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHand of Holder\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Insert Shape\u003c\/strong\u003e: Triangle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Insert Size Code\u003c\/strong\u003e: TP..21505\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Insert Thickness\u003c\/strong\u003e: 0.094 inches (2.38 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Positive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRadial Rake\u003c\/strong\u003e: 5 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLead Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBack of Bar to Cutting Edge\u003c\/strong\u003e: 0.4155 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 0.228 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Hole Diameter\u003c\/strong\u003e: 0.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Tool Application\u003c\/strong\u003e: Boring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Universal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Use Tool\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Included\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Inserts Used\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.279 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241601\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: WIDIA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 2825304\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WIDIA","offers":[{"title":"Default Title","offer_id":67912939209010,"sku":"2825304","price":499.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/57087cb63e973c074251cd34b8b938db.jpg?v=1791240977","url":"https:\/\/voomisupply.com\/products\/widia-2825304-indexable-boring-bar-3-8-in-shank-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}