1. Product Overview The 305707 C‑2Z double‑row angular contact ball bearing is pre‑integrated double‑row construction with C‑type contact angle, double‑sided 2Z metal dust shields. It can bear combined radial load and bidirectional axial thrust load, compact width dimension, metal shields block coarse dust, suitable for medium‑speed compact transmission without heavy‑contamination environment. It is widely used in gearboxes, agricultural machinery and general‑purpose compact