6307‑2Z/C3 Deep Groove Ball Bearing 35x80x21mm for High Speed Machinery Product Overview 6307‑2Z/C3 is single‑row deep groove ball bearing fitted with double metal shields and C3 enlarged internal clearance. It takes main radial load and can also bear small bidirectional axial loads for general industrial rotating assemblies. Factory pre‑greased, double‑side 2Z metal shields block dust and dirt to cut down daily maintenance work. C3 larger clearance accommodates shaft thermal