EC6309-2RS is an EC reinforced single-row deep groove ball bearing. EC indicates optimized internal structure, larger steel balls, and optimized groove design. The suffix -2RS indicates double-sided NBR rubber contact seals, factory pre-filled with grease, maintenance-free, dustproof, splashproof, and runs smoothly and quietly. Model EC6309-2RS AC6309-2RS Brand ZH Material Chrome Steel precision P0 P6 P5 P4 Product Description Large and medium-sized motors, water pumps, fans,