Angular contact ball bearing 71902 / 71902C (Schrägkugellager) — compact 15 x 28 x 7 mm Key benefits P5 precision option for tight tolerances and very smooth rotation, suitable where accuracy matters. Designed to support combined radial and axial loads in a small footprint. Interchangeable with standard 71902 family for straightforward replacement and compatibility. Multiple variants (DB, DT, DF) and the 7902 configuration let you match preload and contact arrangement to the application. Why this bearing solves problems Compact size (15×28×7 mm) enables precise motion in space-constrained assemblies where a standard bearing would not fit. High-precision P5 option reduces runout and vibration, improving performance of high-speed and precision systems. Variant choices allow you to optimize stiffness, load distribution, and axial capacity to increase rigidity and service life when mounted and lubricated correctly. Features & specifications Inner diameter: 15 mm Outer diameter: 28 mm Width: 7 mm Models: 71902, 71902C Precision and variants: P5 precision; DB, DT, DF variants; 7902 configuration Function: Angular contact ball bearing — supports combined radial and axial loads Performance and compatibility Suitable for high-speed operation in precision machinery when correctly lubricated and mounted. Interchangeable with the 71902 series for easy maintenance and part sourcing. Variant options let you tailor preload and contact geometry to application requirements. Installation and maintenance notes Apply the correct preload or axial offset for the chosen variant and configuration. Ensure mounting surfaces are clean and properly prepared; use appropriate seals to retain lubricant and protect against contamination. Align components carefully during assembly to preserve bearing accuracy and life. Follow recommended lubrication practices for the intended speed and load conditions. Typical use scenarios Small CNC spindles and precision motors: provides low runout and stable rotation in compact spindle heads. Lightweight gearboxes and robotic joints: increases rigidity and axial load capacity where space and weight are limited. Automated tooling and imaging devices: maintains position accuracy and smooth motion in compact drives and optics assemblies. Compact, precise, and compatible — the 71902 / 71902C family offers configurable angular contact performance for demanding small-scale applications where space, accuracy, and reliability are required.