The 7216 BUA is a high-precision, single-row angular contact ball bearing designed to manage heavy combined radial and significant unidirectional axial loads. Featuring a standardized 40° contact angle (indicated by the 'B' designation), this bearing provides exceptional axial rigidity and high-speed capability, making it ideal for demanding applications like high-performance pumps, compressors, and certain machine tool spindles. The key functional advantage is the 'U' (Universal) designation, meaning the bearing is manufactured with highly controlled tolerances allowing for flexible mounting in tandem (DT), back-to-back (DB), or face-to-face (DF) configurations without the need for shims or special adjustments to achieve a pre-determined axial preload.
Built for reliability and longevity, the 7216 BUA ensures minimal heat generation and superior running accuracy under sustained operational stress. Its robust design is optimized for environments requiring high stiffness and precise shaft guidance. By utilizing premium internal geometry and often featuring a specialized cage (such as reinforced polyamide or machined brass, depending on specific manufacturer suffix), this bearing guarantees stable performance across a wide operating temperature range, offering reduced maintenance cycles and maximized machine uptime. This specific size (80mm bore, 140mm OD) is a standard workhorse in heavy industrial gearboxes and power transmission systems.
Key Features
40° Contact Angle optimized for high axial rigidity and heavy thrust loads.
Universal Matching (U) permits flexible mounting arrangements (DB, DF, DT) using standard inventory.
High running accuracy suitable for demanding machine tool and pump applications.
Designed to manage high combined radial and unidirectional axial forces.
High limiting speeds due to optimized internal geometry and cage structure.
