{"product_id":"brush-research-mfg-bc4m18-flexible-cylinder-hone-180-grit","title":"Brush Research Mfg. BC4M18 Flexible Cylinder Hone 180 Grit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BRUSH RESEARCH MFG. BC4M18 is a flexible cylinder hone designed for deburring, surface finishing, and bore preparation in small-diameter cylindrical bores. Built with silicon carbide abrasive at 180 grit (extra fine grade), it delivers consistent stock removal and surface conditioning without aggressive material loading. The hone operates at a maximum of 1,200 RPM and is suited for use on mild steel, stainless steel, and cast iron workpieces. With a 6-inch overall length and a 0.055-inch shank diameter, this tool is sized for precision work on tight bores where standard honing equipment cannot reach. Machinists, tool-and-die technicians, and maintenance professionals rely on this type of flexible hone for cylinder wall prep and bore finishing.\u003c\/p\u003e\n\u003cp\u003eThe BC4M18 is intended for small-bore applications where bore diameter is approximately 0.157 inches. Its flexible abrasive construction allows the hone to self-center and conform to the bore, making it effective for through-bore finishing on hydraulic cylinders, pneumatic components, valve bodies, and similar precision parts. The abrasive contact length is 0.75 inches, keeping the cutting action concentrated in the bore without risk of over-honing adjacent surfaces. This tool is well suited for production environments and maintenance shop use where repeatable bore surface finish is required on small ferrous components.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSilicon carbide abrasive at 180 grit provides extra fine surface finishing\u003c\/li\u003e\n  \u003cli\u003eDesigned for bores at 0.157 inches diameter with a 0.75-inch abrasive contact length\u003c\/li\u003e\n  \u003cli\u003eCompatible with mild steel, stainless steel, and cast iron material applications\u003c\/li\u003e\n  \u003cli\u003eMaximum operating speed of 1,200 RPM for controlled stock removal\u003c\/li\u003e\n  \u003cli\u003e6-inch overall length with a 0.055-inch shank diameter for access in confined bore locations\u003c\/li\u003e\n  \u003cli\u003eFlexible construction allows self-centering action within the bore\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use on mild steel, stainless steel, and cast iron bores with an inside diameter of approximately 0.157 inches. Suitable for hydraulic, pneumatic, and mechanical components requiring small-bore surface finishing.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis hone is installed in a drill press, lathe, or hand drill operating at or below 1,200 RPM. Secure the shank firmly in the chuck before operation and apply a compatible cutting fluid or honing oil to the abrasive surface to extend tool life and improve finish quality. Do not exceed the rated maximum RPM, as overspeed will reduce abrasive life and may compromise bore geometry. Inspect the abrasive balls for wear before each use and replace the tool when abrasive material is depleted.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAbrasive Material\u003c\/strong\u003e: Silicon Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Extra Fine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrit\u003c\/strong\u003e: 180\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Bore Diameter\u003c\/strong\u003e: 0.157 inches (4.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.157 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAbrasive Length\u003c\/strong\u003e: 0.75 inches (19 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.055 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 1,200\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Mild Steel, Stainless Steel, Cast Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.04 pounds\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: BRUSH RESEARCH MFG.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: BC4M18\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BRUSH RESEARCH MFG","offers":[{"title":"Default Title","offer_id":67910001590578,"sku":"BC4M18","price":36.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/de209947bc970e116abb09439d088154.jpg?v=1791194665","url":"https:\/\/voomisupply.com\/products\/brush-research-mfg-bc4m18-flexible-cylinder-hone-180-grit","provider":"Voomi Supply","version":"1.0","type":"link"}