THK Pillow Block Type Linear Bushing is a case unit where the standard type of Linear Bushing is incorporated into a small, lightweight aluminum casing. This model can easily be mounted simply by securing it to the table with bolts. Housing material for a pillow block bearing is typically made of cast iron or pressed steel. Pillow block bearings are extensively used in conveyor systems such as tube chain conveyors. Most pillow block bearings are self-lubricating.