1. Product Overview The CF3BUU sealed stud‑type cam follower (track roller) is miniature needle roller unit with M3 threaded stud and hex‑socket head, double‑end BUU rubber seals prevent dust and grease leakage. Compact outer‑roller construction directly runs on cam or track surface, mainly bears radial load for miniature automation mechanisms. It is widely used in small cam mechanisms, packaging equipment and miniature automated guide assemblies. 👉 Get a quote within 24