71900 thin‑walled angular contact ball bearing features ultra‑slim wall thickness and lightweight design. It can withstand combined radial and axial loads, supports high‑speed rotation with high running accuracy. This bearing is widely used in precision instruments, miniature rotary parts, automation equipment and other machinery with strict space‑limitation requirements.

71900 series bearings feature a high-speed angular contact design with ultra-thin section dimensions, engineered to support combined radial and axial loads in an extremely lightweight, compact package with superior rotational accuracy. Available in open configurations only, with bore diameters ranging from 10mm to 50mm and an ultra-thin cross-section height of 6mm across all sizes. These bearings deliver ultra-compact design, significant weight reduction, exceptional high-speed capability, superior axial and radial rigidity, low heat generation, and reliable performance in precision applications, making them ideal for high-speed machine tool spindles, aerospace actuators, robotics joints, medical imaging equipment, semiconductor manufacturing devices, and ultra-precision mechanisms where both weight savings and high rotational accuracy are critical.