7205‑ADB Duplex Angular Contact Ball Bearing 25x52x30mm for Machine Tool Spindle Product Overview 7205‑ADB is a factory pre‑matched back‑to‑back duplex angular contact ball bearing set with 30‑degree contact angle. Two single bearings are paired in DB arrangement and pre‑loaded at factory, ready for direct installation. This open‑type unit can support both radial load and bidirectional axial load. It delivers high rigidity and good running accuracy, widely used on medium‑high