Pillow blocks consist of a bearing and housing, supplied as an integral unit. These units incorporate seals and lubricating provisions. The pillow block construction allows the housing to be bolted onto a machine surface parallel to the shaft axis. Most mounted units have self-aligning properties. In applications where extreme running accuracy is not required, pillow blocks are economical and minimise installation time. They are used extensively in various machineries, especially in agricultural machinery, textile machinery, metallurgical machinery, mining machinery and various conveying devices.