Pillow block bearing
A pillow block bearing (or plummer block) is a mounting used to support a rotating shaft, using a bearing in a housing which is bolted to a foundation with the mounted shaft in a parallel plane to the mounting surface and perpendicular to the center line of the mounting holes, as contrasted with various types of flange blocks or flange units. == Types == === Pillow blocks === A pillow block usually refers to a light duty housing, frequently in one piece and often with an integral anti-friction bearing.