{"product_id":"cleveland-c25139-chucking-reamer-no-42-wire-size-hss","title":"Cleveland C25139 Chucking Reamer No. 42 Wire Size Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CLEVELAND C25139 is a straight-flute chucking reamer manufactured from high-speed steel (HSS) for precision hole finishing in metal. Sized to No. 42 wire gauge, it produces a finished bore diameter of 0.0935 inches. The reamer features a straight shank for use in drill chucks and collet holders on lathes, drill presses, and CNC machining centers. With a right-hand cutting direction and a bright, uncoated finish, the C25139 is suited for general-purpose reaming where close tolerances are required. Machinists and tool-and-die technicians are the primary installers of this type of tooling.\u003c\/p\u003e\u003cp\u003eThis reamer is used in production and maintenance machining applications where small-diameter holes require precise sizing and smooth surface finish. The No. 42 wire-size designation targets bores in the 0.0500 to 0.0999 inch diameter range, with the C25139 ground to 0.0935 inches. It is commonly applied in light-duty ferrous and non-ferrous workpieces where a straight flute geometry provides adequate chip clearance and controlled cutting action. No special coolant system is required, though flood or mist coolant is typical practice for extended tool life.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo. 42 wire-size diameter ground to 0.0935 inches for precise hole finishing\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction provides hardness and wear resistance for general machining\u003c\/li\u003e\n\u003cli\u003eStraight flute geometry suits through-hole reaming in most common materials\u003c\/li\u003e\n\u003cli\u003eStraight shank compatible with standard drill chucks and collet holders\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction for conventional machine spindle rotation\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish — ready to use out of the package without additional prep\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a straight-shank chucking reamer for use in drill chucks and collet holders on lathes, drill presses, and machining centers that accept small-diameter straight-shank tooling.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003ePower down and lock out the machine spindle before installing or removing the reamer from the chuck or collet. Secure the straight shank firmly to prevent slippage under cutting load. Use appropriate cutting fluid or coolant for the workpiece material to extend tool life and maintain bore quality. Handle HSS tooling carefully to avoid chipping the cutting edges prior to use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Wire Size)\u003c\/strong\u003e: No. 42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Decimal Inch)\u003c\/strong\u003e: 0.0935 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter Range\u003c\/strong\u003e: 0.0500 to 0.0999 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 inches (76.20 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.75 inches (19.05 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\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\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: CLEVELAND\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C25139\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51714269086002,"sku":"C25139","price":56.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6f116864c100f310fb49e611f8e08af2.jpg?v=1788498621","url":"https:\/\/voomisupply.com\/products\/cleveland-c25139-chucking-reamer-no-42-wire-size-hss","provider":"Voomi Supply","version":"1.0","type":"link"}