6003ZZE Nachi Bearing Shielded C3 Japan 17x35x10 Ball Bearings Single-row deep groove geometry for high speeds and supporting radial loads High-carbon chrome steel parts for increased wear and fatigue resistance C3 radial internal clearance for radial slack between the inner and outer rings is greater than CN (normal) to compensate for thermal expansion Pressed steel cage evenly spaces rollers for reduced friction, vibration, and noise Metal shield on both sides of the bearing keep the lubricant in and contaminants out