To provide a foam lubricant sealed bearing with excellent lubricant retaining performance and long life capable of performing operation even at high speed rotation, making a manufacturing step relatively simple and responding to request for cost reduction.

In the foam lubricant sealed bearing, the foam lubricant 37 is sealed inside the bearing 31. The foam lubricant 37 is formed by foaming and curing a mixture containing an urethane prepolymer having an isocyanate group in the molecule, a curing agent and a foaming agent. The compounding ratio of the lubrication component is 1 wt.%-90 wt.% relative to the whole of the mixture.