MJ3/4ZZ Imperial Metal Shielded Deep Groove Ball Bearing 3/4x2x11/16 inch

Imperial Metal Shielded Deep Groove Ball Bearings: One of the most commonly used bearings, these types are manufactured with metal shields inserted into the outer raceway, these fit in closely to the inner race providing protection against light mechanical damage, some protection against the ingress of moisture, dust and other foreign matter and serve to retain the pre-filled grease in the bearing. Manufactured to inch sizes to meet the requirements of many older British machines and many current American manufactured applications.
Shields can be removed for applications that only require 1 shield
Benefits: Provides light mechanical protection, limits moisture and dirt ingress, lubricated for life