Designed to accommodate combined loads while withstanding vibration, air conditioner ball bearings facilitate the transfer of energy from the engine to the compressor. These bearings are suitable for the high-speed applications Automotive A/C compressors require. They are typically double-row ball bearings, rubber sealed on both sides, and pre-lubricated with high-speed grease. (30,32B,35BD,40BD series E.g. 30BD5222T1XDDU, 35BD219T12DDU)