1. Product Overview 71914CE/HCP4DBA is matched double set super precision thin section angular contact ball bearing, dimension 70×100×32mm. CE stands for 15° contact angle high-speed design; HC means silicon nitride ceramic rolling balls; P4A ultra-high dimensional & running tolerance; DBA represents back-to-back paired arrangement with light preload. Phenolic fabric reinforced resin cage guides rolling elements stably. Hybrid ceramic structure cuts centrifugal force for