{"product_id":"hertel-mr34-0079-059-chucking-reamer-0-0079in-carbide","title":"Hertel MR34-0079.059 Chucking Reamer 0.0079in Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL MR34-0079.059 is a solid carbide chucking reamer designed for precision hole finishing in tight-tolerance applications. With a 0.0079-inch (0.20 mm) cutting diameter and a diameter tolerance of 0.0000 to +0.0003 mm, this reamer is built for micro-diameter work where dimensional accuracy is critical. The 4-flute spiral configuration with left-hand spiral and right-hand cutting direction promotes chip evacuation while maintaining a stable cutting action. A bright polished finish reduces friction and extends tool life in ferrous and non-ferrous materials. Machinists and toolroom technicians use this reamer in CNC machining centers, drill presses, and precision boring operations.\u003c\/p\u003e\u003cp\u003eThis chucking reamer is suited for finishing pre-drilled holes to precise diameters in close-tolerance production and toolroom environments. The straight shank allows direct mounting in standard collet chucks, drill chucks, and floating holders compatible with small-diameter tooling. At 1.9685 inches overall length with a 0.1181-inch flute length (1.50 mm), the compact geometry targets shallow, micro-diameter bore finishing where rigidity and minimal deflection are essential. Typical applications include medical device manufacturing, watchmaking, instrument fabrication, and precision mold work.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.0079-inch (0.20 mm) cutting diameter for micro-bore finishing\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction for superior rigidity and wear resistance in hard materials\u003c\/li\u003e\n\u003cli\u003e4-flute left-hand spiral, right-hand cut design for controlled chip flow\u003c\/li\u003e\n\u003cli\u003eBright polished coating reduces friction and built-up edge\u003c\/li\u003e\n\u003cli\u003eDiameter tolerance of 0.0000 to +0.0003 mm for tight-tolerance bore finishing\u003c\/li\u003e\n\u003cli\u003eStraight shank for compatibility with standard collet and drill chuck systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style chucking reamer for use in standard straight-shank collet chucks and drill chucks capable of holding small-diameter tooling in the micro-diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists familiar with precision reaming operations. Secure the straight shank firmly in a collet or chuck rated for the shank diameter before operation. Always ensure the workpiece is properly fixtured and the spindle is at a complete stop before tool changes. Use appropriate cutting fluid for the workpiece material to maintain tool life and surface finish quality.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter\u003c\/strong\u003e: 0.0079 inches (0.20 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter 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: 0.1181 inches (1.50 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 (Polished)\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: MR34-0079.059\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51748753735986,"sku":"MR34-0079.059","price":96.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/520f5bf697a060d000f30d00528e7c97_3dc6c584-0b54-4260-93a7-e67ff8b0e828.jpg?v=1788897837","url":"https:\/\/voomisupply.com\/products\/hertel-mr34-0079-059-chucking-reamer-0-0079in-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}