Plain Linear Bearing Pillow Block PN10C 5/8" Open, CompensatedOpen Plain Linear Bearing Pillow Block with a 5 8" inner diameter and a compensated running clearance of 0. 0015" per side. A mountable standard sized aluminum housing encloses the bearing, which features a self lubricating FrelonGOLD liner for maintenance free operation in harsh conditions like extreme temperatures, dirt and vibration. Optional liners: corrosive chemical resistant FrelonJ & FDA compliant FrelonW Anodized Aluminum Bearing Shell