{"product_id":"zkl-nj311-single-row-cylindrical-roller-bearing","title":"ZKL NJ311 Single Row Cylindrical Roller Bearing","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"17\" data-end=\"518\"\u003eThe ZKL NJ311 Single Row Cylindrical Roller Bearing is used in industrial rotating systems to support high radial loads while allowing axial displacement of the shaft relative to the housing. Commonly installed in electric \u003ca href=\"https:\/\/plgautomation.com\/collections\/drives-motor-control\"\u003emotors\u003c\/a\u003e, gearboxes, machine tools, and heavy machinery requiring rigid support and high-speed performance. Maintenance teams, mechanical engineers, and system integrators use this part for repair, retrofit, or replacement to ensure reliable operation and extended equipment life.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"520\" data-end=\"537\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"538\" data-end=\"1017\"\u003eThe ZKL NJ311 bearing is widely used in heavy-duty industrial applications such as large electric motors, pumps, rolling mills, and machine tool spindles where high radial load capacity and rigidity are critical. Its cylindrical roller design allows it to handle heavy loads and operate efficiently at higher speeds, while also accommodating axial movement, making it suitable for applications with thermal expansion or shaft displacement. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1019\" data-end=\"1048\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1049\" data-end=\"1925\"\u003e• Manufacturer: ZKL\u003cbr data-start=\"1068\" data-end=\"1071\"\u003e• Model \/ Part Number: NJ311\u003cbr data-start=\"1099\" data-end=\"1102\"\u003e• Product Type: Single Row Cylindrical Roller Bearing\u003cbr data-start=\"1155\" data-end=\"1158\"\u003e• Bore Diameter (d): 55 mm \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1222\" data-end=\"1225\"\u003e• Outer Diameter (D): 120 mm \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1291\" data-end=\"1294\"\u003e• Width (B): 29 mm \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1350\" data-end=\"1353\"\u003e• Weight: Approx. 1.45–1.5 kg \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1420\" data-end=\"1423\"\u003e• Bearing Type: Cylindrical roller (NJ design – one rib on inner ring, two on outer)\u003cbr data-start=\"1507\" data-end=\"1510\"\u003e• Dynamic Load Rating: ~108 kN \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1578\" data-end=\"1581\"\u003e• Static Load Rating: ~100 kN \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1648\" data-end=\"1651\"\u003e• Reference Speed: ~5300 rpm (grease), ~6300 rpm (oil) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1743\" data-end=\"1746\"\u003e• Cage Type: Steel cage (standard) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1818\" data-end=\"1821\"\u003e• Function: Supports high radial loads and allows axial displacement\u003cbr data-start=\"1889\" data-end=\"1892\"\u003e• Material: Bearing-grade steel\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"1927\" data-end=\"1951\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"1952\" data-end=\"2079\"\u003e• \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\" role=\"button\" tabindex=\"0\"\u003e\u003cspan class=\"whitespace-normal\"\u003eSKF NJ311 ECP Cylindrical Roller Bearing\u003c\/span\u003e\u003c\/span\u003e\u003cbr data-start=\"1991\" data-end=\"1994\"\u003e• \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\" role=\"button\" tabindex=\"0\"\u003e\u003cspan class=\"whitespace-normal\"\u003eFAG NJ311-E-TVP2 Cylindrical Roller Bearing\u003c\/span\u003e\u003c\/span\u003e\u003cbr data-start=\"2035\" data-end=\"2038\"\u003e• \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\" role=\"button\" tabindex=\"0\"\u003e\u003cspan class=\"whitespace-normal\"\u003eNSK NJ311ET Cylindrical Roller Bearing\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"ZKL","offers":[{"title":"New","offer_id":51735014572334,"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_5f0cfa2f-b9e6-47ab-8dac-c824d9002936.jpg?v=1770608105","url":"https:\/\/plgautomation.com\/products\/zkl-nj311-single-row-cylindrical-roller-bearing","provider":"PLG Automation ","version":"1.0","type":"link"}