71800 series bearings

📷 Product Thumbnail
📐 Structure Drawing

718/630

Metric Dimensions (mm)
Bore d630mmBearing inner bore
Outer Dia. D780mmBearing outer diameter
Width B69mmBearing width
Radial Load (KN)
Dynamic Load Cr420KNBasic dynamic radial load rating
Static Load C0r760KNBasic static radial load rating
Speed & Torque
Grease Lubrication630rpmLimiting speed for grease lubrication
Oil Lubrication750rpmLimiting speed for oil lubrication
Other Parameters
Weight65.7kgBearing weight
718/630 thin‑walled angular contact ball bearing is a giant‑bore thin‑wall angular‑contact ball bearing. It undertakes combined radial‑axial loads, runs stably with low vibration, ideal for large rotary tables, port auxiliary machinery and super‑large‑diameter rotary assemblies.

71800 series bearings feature an angular contact design with ultra-thin section dimensions, engineered to support combined radial and axial loads in an extremely lightweight, space-saving package. Available in open configurations only, with bore diameters ranging from 10mm to 50mm and an ultra-thin cross-section height of 5mm across all sizes. These bearings deliver compact design, significant weight reduction, high-speed capability, excellent axial rigidity, and reliable performance in precision applications, making them ideal for aerospace actuators, robotics joints, medical imaging equipment, semiconductor manufacturing devices, machine tool spindles, and high-speed precision mechanisms where both weight savings and axial load capacity are critical requirements.

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📞 400-0635-880
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📱 +86-635-2513333
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