The 7500 Series bearings are single row retainer type radial ball bearings. They incorporate highly effective single lip contact seals, with metal guards. The inner and outer rings are turned from chrome steel and after careful heat treatment the through-hardened rings are accurately ground to close tolerances. The 7500 Series bearings are recommended for applications requiring the accuracy of rotation and quiet performance of close tolerance precision grade bearings. They are used where a superior seal is required to retain lubricant and keep the bearing free from dust and dirt. Double sealed bearings are grease packed as standard and are manufactured with a snap ring groove. RBC Nice Bearings is a subsidiary of RBC Bearings. RBC Bearings has been providing bearing solutions to our customers since 1919. A publicly-traded company (NASDAQ: ROLL), RBC currently has 23 manufacturing facilities worldwide, with 18 located in the USA.