{"product_id":"timken-mm20bs47-quh-quadruplex-angular-contact-ball-screw-bearing-set","title":"Timken MM20BS47 QUH Quadruplex Angular Contact Ball Screw Bearing Set","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\" class=\"PDq2pG_selectionAnchorContainer\"\u003eDescription:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"17\" data-end=\"1049\"\u003eThe Timken Fafnir MM20BS47 QUH is a factory-matched quadruplex angular contact ball screw support bearing set consisting of four precision single-row angular contact ball bearings arranged with a heavy preload (QUH). Designed specifically for ball screw support applications, this matched bearing set delivers exceptional axial stiffness, precise shaft positioning, and reliable support for combined radial and axial loads in high-precision motion systems. Commonly installed in industrial gearboxes, conveyors, mining equipment, construction machinery, agricultural equipment, CNC machine tools, and power transmission systems, the MM20BS47 QUH bearing set provides outstanding rigidity, repeatable positioning accuracy, and dependable long-term performance. Maintenance teams, OEMs, and system integrators specify this factory-matched bearing set for equipment repair, replacement, machine rebuilds, and retrofits where high-precision motion control and factory-matched preload are essential. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"1051\" data-end=\"1068\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"1069\" data-end=\"1752\"\u003eThe Timken Fafnir MM20BS47 QUH matched quadruplex ball screw support bearing set is engineered for precision industrial applications requiring maximum axial rigidity, accurate shaft positioning, and reliable operation under combined radial and axial loads. It is widely used in CNC machining centers, ball screw assemblies, industrial automation equipment, precision positioning systems, heavy-duty machine tools, industrial gearboxes, conveyors, and power transmission systems where the heavy-preload quadruplex arrangement minimizes deflection, improves positioning repeatability, enhances machining accuracy, and extends bearing service life. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1754\" data-end=\"1783\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1784\" data-end=\"2738\"\u003e• Manufacturer: Timken Fafnir\u003cbr data-start=\"1813\" data-end=\"1816\"\u003e• Manufacturer Part Number (MPN): MM20BS47 QUH\u003cbr data-start=\"1862\" data-end=\"1865\"\u003e• Product Type: Matched quadruplex ball screw support bearing set\u003cbr data-start=\"1930\" data-end=\"1933\"\u003e• Bearing Type: Precision single-row angular contact ball bearings (quadruplex set)\u003cbr data-start=\"2016\" data-end=\"2019\"\u003e• Series: MM-BS (Ball Screw Support)\u003cbr data-start=\"2055\" data-end=\"2058\"\u003e• Design Series: QUH (Quadruplex, Heavy Preload)\u003cbr data-start=\"2106\" data-end=\"2109\"\u003e• Bore Diameter: 20 mm\u003cbr data-start=\"2131\" data-end=\"2134\"\u003e• Outside Diameter: 47 mm (1.8504 in)\u003cbr data-start=\"2171\" data-end=\"2174\"\u003e• Width(s): 15 mm per bearing; 60 mm (2.3624 in) total set width\u003cbr data-start=\"2238\" data-end=\"2241\"\u003e• Cage Type: Phenolic outer land riding cage\u003cbr data-start=\"2285\" data-end=\"2288\"\u003e• Material: Bearing steel with steel balls\u003cbr data-start=\"2330\" data-end=\"2333\"\u003e• Load Type: Combined radial and axial loads\u003cbr data-start=\"2377\" data-end=\"2380\"\u003e• Dynamic Rating: 5,600 lbf (24,900 N)\u003cbr data-start=\"2418\" data-end=\"2421\"\u003e• Static Rating: 5,600 lbf (24,900 N)\u003cbr data-start=\"2458\" data-end=\"2461\"\u003e• Dynamic Axial Rating: 9,100 lbf (40,500 N) (preloaded set)\u003cbr data-start=\"2521\" data-end=\"2524\"\u003e• Weight: Refer to manufacturer specification\u003cbr data-start=\"2569\" data-end=\"2572\"\u003e• Compatible Configuration: Factory-matched QUH quadruplex set; components are not intended to be mixed with unmatched bearings. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2740\" data-end=\"2764\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2765\" data-end=\"2917\"\u003e• Timken Fafnir MM20BS47 QUH matched set\u003cbr data-start=\"2805\" data-end=\"2808\"\u003e• Timken Fafnir MM20BS47 QUL matched set\u003cbr data-start=\"2848\" data-end=\"2851\"\u003e• OEM equivalent 20 mm quadruplex ball screw support bearing set\u003c\/p\u003e","brand":"TIMKEN","offers":[{"title":"New","offer_id":51714034106670,"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_fff26954-02e0-42e0-a0c0-adbde1e69419.jpg?v=1770414428","url":"https:\/\/plgautomation.com\/products\/timken-mm20bs47-quh-quadruplex-angular-contact-ball-screw-bearing-set","provider":"PLG Automation ","version":"1.0","type":"link"}