{"product_id":"the-timken-company-na861-tapered-roller-bearing-cone","title":"The Timken Company NA861 Tapered Roller Bearing Cone","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"17\" data-end=\"1013\"\u003eThe Timken NA861 is a precision tapered roller bearing cone (inner ring assembly) engineered for use in heavy-duty double-row tapered roller bearing configurations. The NA861 cone is designed to mate with the compatible Timken 854D double cup (outer ring) to form a complete TNA (Tapered Non-adjustable Double Row) bearing assembly capable of supporting exceptionally high combined radial and axial loads. Commonly installed in industrial gearboxes, conveyors, mining equipment, construction machinery, agricultural equipment, and power transmission systems, this tapered roller bearing cone provides accurate shaft alignment, excellent load distribution, and reliable long-term performance in demanding industrial environments. Maintenance teams, OEMs, and system integrators specify the Timken NA861 tapered roller bearing cone for equipment repair, replacement, machine rebuilds, and retrofits where genuine Timken matched bearing components are required. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"1015\" data-end=\"1032\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"1033\" data-end=\"1621\"\u003eThe Timken NA861 tapered roller bearing cone is designed for heavy-duty industrial applications requiring high load capacity and precise shaft support. When matched with the Timken 854D double cup, it is widely used in industrial gear reducers, heavy-duty conveyors, mining and aggregate equipment, construction machinery, agricultural equipment, and power transmission systems where the complete double-row bearing assembly provides exceptional radial and axial load capacity, accurate shaft positioning, reduced friction, and extended service life. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1623\" data-end=\"1652\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1653\" data-end=\"2464\"\u003e• Manufacturer: Timken\u003cbr data-start=\"1675\" data-end=\"1678\"\u003e• Manufacturer Part Number (MPN): NA861\u003cbr data-start=\"1717\" data-end=\"1720\"\u003e• Product Type: Tapered roller bearing cone\u003cbr data-start=\"1763\" data-end=\"1766\"\u003e• Bearing Type: Double-row tapered roller bearing cone (inner ring assembly)\u003cbr data-start=\"1842\" data-end=\"1845\"\u003e• Series: TNA (Tapered Non-adjustable Double Row)\u003cbr data-start=\"1894\" data-end=\"1897\"\u003e• Design Series: TNA\u003cbr data-start=\"1917\" data-end=\"1920\"\u003e• Cone Part Number: NA861\u003cbr data-start=\"1945\" data-end=\"1948\"\u003e• Bore Diameter: 4.0000 in (101.600 mm)\u003cbr data-start=\"1987\" data-end=\"1990\"\u003e• Inner Ring Width (B): 2.2650 in (57.531 mm)\u003cbr data-start=\"2035\" data-end=\"2038\"\u003e• Cage Type: Stamped steel\u003cbr data-start=\"2064\" data-end=\"2067\"\u003e• Material: High-grade bearing steel\u003cbr data-start=\"2103\" data-end=\"2106\"\u003e• Load Type: Combined radial and axial loads\u003cbr data-start=\"2150\" data-end=\"2153\"\u003e• Dynamic rating: 179,000 lbf (797,000 N)\u003cbr data-start=\"2194\" data-end=\"2197\"\u003e• Static rating: Refer to complete bearing assembly specification\u003cbr data-start=\"2262\" data-end=\"2265\"\u003e• Dynamic axial rating: 15,300 lbf (68,000 N)\u003cbr data-start=\"2310\" data-end=\"2313\"\u003e• Weight: Approximately 32.3 lb (14.65 kg)\u003cbr data-start=\"2355\" data-end=\"2358\"\u003e• Compatible cone\/cup: Timken NA861 cone with Timken 854D double cup \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2466\" data-end=\"2490\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2491\" data-end=\"2609\"\u003e• Timken NA861\/854D bearing assembly\u003cbr data-start=\"2527\" data-end=\"2530\"\u003e• Timken NA861-90031 bearing assembly\u003cbr data-start=\"2567\" data-end=\"2570\"\u003e• Timken NA861-90050 bearing assembly\u003c\/p\u003e","brand":"Timken","offers":[{"title":"New","offer_id":51714033516846,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_d2348ae2-5167-4474-b1d2-b9b47669cc78.jpg?v=1770414406","url":"https:\/\/plgautomation.com\/products\/the-timken-company-na861-tapered-roller-bearing-cone","provider":"PLG Automation ","version":"1.0","type":"link"}