6004‑2RS1 Deep Groove Ball Bearing 20x42x12mm for Small Electric Motor Product Overview 6004‑2RS1 is single‑row deep groove ball bearing equipped with double rubber contact seals. It takes radial load and small bidirectional axial loads for light‑duty rotating assemblies. Factory pre‑greased, 2RS1 contact seals block dust and moisture for poor working surroundings. Standard CN normal clearance fits most common fit and temperature conditions. Made of GCr15 bearing steel, it