{"product_id":"value-collection-557u-1-taper-pin-reamer-size-1-hss","title":"Value Collection 557u 1 Taper Pin Reamer Size 1 Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 557u 1 is a taper pin reamer designed to enlarge, finish, and shape taper pin holes to precise dimensional tolerances. Built from high speed steel with a bright, uncoated finish, it delivers reliable cutting performance in general-purpose machining applications. The reamer features a spiral flute geometry with a left-hand spiral direction and right-hand cutting direction, a combination that reduces chatter and produces a smoother hole finish. The small end diameter measures 0.1447 inches and the large end measures 0.1798 inches, conforming to the Number 1 taper pin standard at a 1:48 taper rate. A 3\/16-inch square shank ensures positive drive in standard machine spindles and holders.\u003c\/p\u003e\n\u003cp\u003eThis reamer is suited for machine shops, maintenance departments, and tool rooms performing taper pin hole work on ferrous and non-ferrous workpieces. Typical applications include fitting taper pins in mechanical assemblies such as shaft-to-hub connections, linkages, and fixtures where a precise taper fit is required. The 557u 1 is a general-purpose tool appropriate for use in drill presses, lathes, or manual operation with a tap wrench when working in tighter access conditions.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh speed steel construction for durability across general-purpose machining tasks\u003c\/li\u003e\n  \u003cli\u003eSpiral flute design with left-hand spiral and right-hand cut reduces chatter and improves hole finish\u003c\/li\u003e\n  \u003cli\u003eNumber 1 taper pin size with a 1:48 taper rate for standard taper pin fitment\u003c\/li\u003e\n  \u003cli\u003eSmall end diameter 0.1447 inches, large end diameter 0.1798 inches\u003c\/li\u003e\n  \u003cli\u003e3\/16-inch square shank provides positive drive and easy holder retention\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish suitable for use with standard cutting fluids\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard replacement or stock tooling option for Number 1 taper pin reaming operations where a 1:48 taper rate and high speed steel construction are specified.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool is installed and operated by machinists or tool room personnel. Before use, secure the workpiece firmly and ensure the reamer is properly seated in the spindle or tap wrench to prevent runout. Always apply an appropriate cutting fluid to extend tool life and improve surface finish. Do not force the reamer through the workpiece; feed at a steady, controlled rate to avoid tool deflection or breakage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTaper Pin Size\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTaper Rate\u003c\/strong\u003e: 1:48\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmall End Diameter\u003c\/strong\u003e: 0.1447 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge End Diameter\u003c\/strong\u003e: 0.1798 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.6875 inches (1-11\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.9375 inches (2-15\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1875 inches (3\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Square\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\u003eTool Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Hole Enlarging, Hole Finishing, Hole Shaping\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 557U\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 557u 1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51694588789042,"sku":"557u 1","price":116.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ab157a18d061f54d2f06b5da6503d1bc.jpg?v=1788325885","url":"https:\/\/voomisupply.com\/products\/value-collection-557u-1-taper-pin-reamer-size-1-hss","provider":"Voomi Supply","version":"1.0","type":"link"}