1. Product Overview The 6003‑2RSH/C3 single‑row deep groove ball bearing is fitted with 2RSH double‑sided low‑friction contact rubber seals and C3 enlarged radial internal clearance. It can bear radial load as well as moderate bidirectional axial load. The contact seal prevents dust and impurity ingress and retains lubricating grease inside. C3 clearance compensates thermal expansion under high‑speed and interference‑fit operating conditions. It is widely used for small