{"product_id":"osg-300-1772-chucking-reamer-4-5mm-solid-carbide","title":"Osg 300-1772 Chucking Reamer 4.5mm Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 300-1772 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. With a 4.5 mm (0.1772 inch) diameter and a bright, uncoated finish, this reamer delivers tight tolerances in the range of +0.0001 to +0.0004 inches over nominal. It features four straight flutes with a right-hand cutting direction and a straight cylindrical shank for secure chuck mounting. The 70 mm overall length and 22 mm flute length make it well suited for shallow to medium-depth reaming passes. Machinists and tool-and-die professionals use this reamer where consistent bore finish and diameter accuracy are required.\u003c\/p\u003e\u003cp\u003eThis chucking reamer is built for general machining environments where solid carbide tooling is specified for harder workpiece materials or extended tool life compared to HSS alternatives. It fits standard drill press, CNC machining center, and manual mill setups using a collet or drill chuck. The straight shank accepts standard ER collets and drill chucks with appropriate bore clearance. No coolant-through capability is present, so external coolant or cutting fluid application at the workpiece is standard practice for this tool.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in general machining\u003c\/li\u003e\n\u003cli\u003e4.5 mm (0.1772 inch) diameter with tolerance of +0.0001 to +0.0004 inches\u003c\/li\u003e\n\u003cli\u003eFour straight flutes for smooth chip evacuation in through and blind holes\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction, straight cylindrical shank\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish — no coating buildup to affect diameter accuracy\u003c\/li\u003e\n\u003cli\u003eOSG Series 300D standard carbide reamer design\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard OEM-style solid carbide chucking reamer for general machining applications requiring a 4.5 mm finished bore diameter, compatible with collet chucks and drill chucks accepting straight cylindrical shanks.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this reamer should be performed by qualified machinists familiar with rotational tooling and proper speeds and feeds for solid carbide. Ensure the machine spindle is fully stopped and locked out before mounting or removing the reamer. Secure the straight shank firmly in a collet or drill chuck with no runout before operation. Apply appropriate cutting fluid externally at the workpiece when reaming to reduce heat and extend tool life.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter\u003c\/strong\u003e: 4.50 mm (0.1772 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 70 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 22 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.0001 to +0.0004 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 300D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 3.5 inches L x 0.5 inches W x 0.5 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241611\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 300-1772\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51749232214322,"sku":"300-1772","price":64.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b3af7ad9693a92dc89007783f5a05a9f_330033f9-ba72-4bcf-bd67-7bebc24250fb.jpg?v=1788903407","url":"https:\/\/voomisupply.com\/products\/osg-300-1772-chucking-reamer-4-5mm-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}