{"product_id":"21-inch-four-point-contact-528x732x80-mm-ball","title":"21 Inch Four-Point Contact Ball Slewing Ring Bearing Without Gear, 528x732x80mm High Load Rotating Platform Bearing for Heavy Machinery, Durable Precision Support in Industrial Applications with No Gear Drive","description":"\u003cdiv\u003eSingle 21-Inch Four-Point Slewing Ring Bearing 528x732x80\n✔️ Outer dia 732 mm, inner 528 mm, width 80 mm, no gear \u003cp\u003eThis 21-inch four-point contact slewing ring bearing with no gear is designed to support heavy rotating platforms. It’s commonly used on cranes, wind turbines, construction machinery, and large rotary tables where smooth, controlled motion is essential. The four-point contact arrangement delivers high load capacity and stiffness for slow, steady rotation.\u003c\/p\u003e \u003cp\u003e✅ Outer diameter 732 mm (28.8 in); inner diameter 528 mm (20.8 in); width 80 mm (3.15 in) \u003cbr\u003e\n✅ Four-point contact design for heavy-load rotation \u003cbr\u003e\n✅ No gear included; ideal for direct-drive platforms \u003cbr\u003e\n✅ Suitable for slow-rotation cranes, wind turbines, and tables \u003cbr\u003e\n✅ Ball slewing bearing with high stiffness and load capacity \u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is a slewing ring bearing used for and what makes four-point contact special?\nA handy overview for common questions about this bearing type.\n- heavy machinery rotation and load support in cranes and wind turbines\n- four-point contact offers higher stiffness under moment loads\n- compact, no-gear designs simplify mounting and maintenance\n- long service life with proper lubrication and load handling\u003c\/p\u003e\n\u003c\/div\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":43580781363435,"sku":"VXB01030630001-SLEWING-BEARING","price":3106.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/21-inch-four-point-contact-528x732x80-mm-ball-slewing-ring-bearing-with-no-gear-vxb-ball-bearings-32680307785963.jpg?v=1770445939","url":"https:\/\/vxb.com\/products\/21-inch-four-point-contact-528x732x80-mm-ball","provider":"VXB Bearings","version":"1.0","type":"link"}