{"product_id":"timken-748s-742-tapered-roller-bearing-assembly","title":"Timken 748S-742 Tapered Roller Bearing Assembly","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=\"805\"\u003eThe Timken 748S-742 complete bearing assembly is a TS (Tapered Single) tapered roller bearing consisting of the Timken 748S cone and Timken 742 cup. Engineered to accommodate heavy combined radial and axial loads, this bearing assembly provides excellent load distribution, precise shaft alignment, and long operating life in demanding industrial environments. It is commonly installed in industrial gearboxes, heavy-duty trailers, mining equipment, construction machinery, conveyors, and power transmission systems. Maintenance teams, OEMs, and system integrators rely on this bearing assembly for equipment repairs, replacement of worn bearings, retrofit projects, and preventive maintenance to maximize equipment reliability and minimize downtime. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"807\" data-end=\"824\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"825\" data-end=\"1289\"\u003eThe Timken 748S-742 tapered roller bearing assembly is designed for applications requiring high load capacity, low friction, and dependable performance under continuous radial and thrust loading. It is widely used in industrial drives, mining machinery, heavy-duty axles, material handling equipment, agricultural machinery, and other rotating equipment where accurate shaft positioning and extended bearing life are critical. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1291\" data-end=\"1320\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1321\" data-end=\"2853\"\u003e• Manufacturer Part Number (MPN): 748S-742\u003cbr data-start=\"1363\" data-end=\"1366\"\u003e• Manufacturer: Timken\u003cbr data-start=\"1388\" data-end=\"1391\"\u003e• Product Type: Complete Bearing Assembly\u003cbr data-start=\"1432\" data-end=\"1435\"\u003e• Bearing Type: TS (Tapered Single) Tapered Roller Bearing\u003cbr data-start=\"1493\" data-end=\"1496\"\u003e• Cone Part Number: 748S\u003cbr data-start=\"1520\" data-end=\"1523\"\u003e• Cup Part Number: 742\u003cbr data-start=\"1545\" data-end=\"1548\"\u003e• Series: 745 Series\u003cbr data-start=\"1568\" data-end=\"1571\"\u003e• Design Units: Inch (Imperial)\u003cbr data-start=\"1602\" data-end=\"1605\" data-is-only-node=\"\"\u003e• Material: Through-Hardened Chrome Steel\u003cbr data-start=\"1646\" data-end=\"1649\"\u003e• Bore Diameter (d): 3.0000 in (76.200 mm)\u003cbr data-start=\"1691\" data-end=\"1694\"\u003e• Outside Diameter (D): 5.9090 in (150.089 mm)\u003cbr data-start=\"1740\" data-end=\"1743\"\u003e• Overall Bearing Width (T): 1.7500 in (44.450 mm)\u003cbr data-start=\"1793\" data-end=\"1796\"\u003e• Cone Width (B): 1.8375 in (46.673 mm)\u003cbr data-start=\"1835\" data-end=\"1838\"\u003e• Cup Width (C): 1.4375 in (36.513 mm)\u003cbr data-start=\"1876\" data-end=\"1879\"\u003e• Dynamic Radial Load Rating (C1): 84,700 lbf (377,000 N)\u003cbr data-start=\"1936\" data-end=\"1939\"\u003e• Dynamic Radial Load Rating (C90): 21,900 lbf (97,600 N)\u003cbr data-start=\"1996\" data-end=\"1999\"\u003e• Static Radial Load Rating (C0): 93,800 lbf (417,000 N)\u003cbr data-start=\"2055\" data-end=\"2058\"\u003e• Dynamic Axial Load Rating (Ca90): 12,200 lbf (54,400 N)\u003cbr data-start=\"2115\" data-end=\"2118\"\u003e• Maximum Shaft Fillet Radius: 0.140 in (3.600 mm)\u003cbr data-start=\"2168\" data-end=\"2171\"\u003e• Maximum Housing Fillet Radius: 0.130 in (3.300 mm)\u003cbr data-start=\"2223\" data-end=\"2226\"\u003e• Shaft Backing Shoulder Diameter – Frontface (da): 3.43 in (87.00 mm)\u003cbr data-start=\"2296\" data-end=\"2299\"\u003e• Shaft Backing Shoulder Diameter – Backface (db): 3.66 in (93.00 mm)\u003cbr data-start=\"2368\" data-end=\"2371\"\u003e• Housing Backing Shoulder Diameter – Frontface (Da): 5.63 in (142.00 mm)\u003cbr data-start=\"2444\" data-end=\"2447\"\u003e• Housing Backing Shoulder Diameter – Backface (Db): 5.28 in (134.11 mm)\u003cbr data-start=\"2519\" data-end=\"2522\"\u003e• K Factor: 1.80\u003cbr data-start=\"2538\" data-end=\"2541\"\u003e• e Factor: 0.33\u003cbr data-start=\"2557\" data-end=\"2560\"\u003e• Y Factor: 1.84\u003cbr data-start=\"2576\" data-end=\"2579\"\u003e• Geometry Factor (Cg): 0.0898\u003cbr data-start=\"2609\" data-end=\"2612\"\u003e• Weight: 8.1 lb (3.7 kg)\u003cbr data-start=\"2637\" data-end=\"2640\"\u003e• Typical Applications: Industrial gearboxes, mining equipment, heavy-duty trailers, construction machinery, conveyors, agricultural equipment, and power transmission systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2855\" data-end=\"2879\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2880\" data-end=\"2931\"\u003e• SKF 748S\/742\u003cbr data-start=\"2894\" data-end=\"2897\"\u003e• NTN 748S\/742\u003cbr data-start=\"2911\" data-end=\"2914\"\u003e• KOYO 748S\/742\u003c\/p\u003e","brand":"Timken","offers":[{"title":"New","offer_id":51714041807150,"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_60704ed7-7036-4837-9fe8-2578cfca1d25.jpg?v=1770414695","url":"https:\/\/plgautomation.com\/products\/timken-748s-742-tapered-roller-bearing-assembly","provider":"PLG Automation ","version":"1.0","type":"link"}