UCF Four-Bolt Flanged Units(ucf four-bolt flanged bearings): Hebei Naimei Bearing Co., Ltd. produces kind of pillow block bearings. Ucf Four-Bolt Flanged Units is one of the main product. Pillow block, also know as a plumer block or bearing housing, is a pedestal used to provide support for a rotating shaft with the help of compatible bearings and various accessories. Housing material for pillow block is typically made of cast iron or cast steel. 

The fundamental application is to mount bearings safely enabling their outer ring to be stationary while allowing rotation of the inner ring. The housing is bolted to a foundation through the holes in the base. Bearing housings are either split type or unsplit type. Split type housings are usually two piece housings where the cap and base can be detached, while certain series are one single piece housings. Various seals are provided to prevent dust and other contaminants from entering the housing. Thus the housing provides a clean environment for the expensive bearings to freely rotate, hence increasing their performance and duty cycle.