Bearings are designed to restrain relative motion while reducing friction between moving parts. There are many types of common bearings such as plain bearings, ball bearings, and fluid bearings to name a few. Routine checks should be performed to ensure alignment and movement of the bearing has not deteriorated over time. Monroe Aerospace is a stocking distributor of Aerospace and Mil-Spec hardware. We have an extensive inventory of bearings. Every part that we sell is in Factory new (FN) condition and we provide our company’s certificate of conformance for all parts on every order. See below for our products.