{"product_id":"hertel-mr34-0819-438-chucking-reamer-no-45-carbide","title":"Hertel MR34-0819.438 Chucking Reamer No. 45 Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL MR34-0819.438 is a solid carbide chucking reamer designed to finish-ream precision holes to No. 45 wire size, equivalent to 0.0820 inches in diameter. Built with a spiral flute geometry and a right-hand cut, this reamer produces accurate, smooth bores in a wide range of workpiece materials. The straight shank seats securely in standard drill chucks and collet holders. At 1.9685 inches overall length with an 11 mm flute length, it is suited for shallow-to-moderate depth reaming operations. The bright, uncoated solid carbide construction delivers rigidity and dimensional stability in demanding precision machining environments. Machinists and toolroom professionals installing tight-tolerance bores rely on this tool for consistent results.\u003c\/p\u003e\u003cp\u003eThis chucking reamer is applied in precision machining, toolroom work, and production reaming where hole diameter must be held to close tolerances. It is well suited for CNC machining centers, manual knee mills, and drill presses equipped with appropriate collet or chuck tooling. The compact overall length makes it practical for benchtop and vertical-spindle setups. Applications include finish-reaming pin holes, bushing bores, and dowel-fit holes in ferrous and non-ferrous workpieces where the No. 45 wire size diameter is specified.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo. 45 wire size diameter — 0.0820 inches with a tolerance of 0.0000 to +0.0003 mm for precise bore sizing\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction provides rigidity and resistance to deflection in hard or abrasive materials\u003c\/li\u003e\n\u003cli\u003eSpiral flute geometry with left-hand spiral promotes chip evacuation and smooth cutting action\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction compatible with standard spindle rotation\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish suitable for use with a variety of cutting fluids and workpiece materials\u003c\/li\u003e\n\u003cli\u003eStraight shank fits standard drill chucks and ER-style collet holders without adapters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style precision chucking reamer for use in standard straight-shank drill chucks and collet toolholders on CNC and manual machine tools where a No. 45 wire size finish reamer is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following standard toolroom safety practices. Power down and lock out the machine spindle before inserting or removing the reamer from the chuck or collet. Ensure the shank is fully seated and the holding device is torqued to the toolholder manufacturer's specification before beginning a cut. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore quality.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Wire Size)\u003c\/strong\u003e: No. 45\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Decimal Inch)\u003c\/strong\u003e: 0.0820 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter Tolerance\u003c\/strong\u003e: 0.0000 to +0.0003 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.9685 inches (50.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 11.00 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: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Direction\u003c\/strong\u003e: Left Hand\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\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\u003eWeight\u003c\/strong\u003e: 0.1 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: MR34-0819.438\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51749369905458,"sku":"MR34-0819.438","price":274.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4036374472779c8ad5bc2c64de4ffcd9.jpg?v=1788905133","url":"https:\/\/voomisupply.com\/products\/hertel-mr34-0819-438-chucking-reamer-no-45-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}