Die Set Plain Linear Bearing - Aluminum PACZ125C 1.25" Compensated IDDie set plain linear bearing with a 1. 25 inner diameter and a compensated running clearance of 0. 0015 per side in a closed aluminum shell. Features a round flange and self lubricating FrelonGOLD liner as standard, which provides optimal performance in extreme conditions such as dirt, heat and vibration. An optional FrelonJ liner is available for harsh chemical environments (use stainless steel shafts for this) and FrelonW is offered as an FDA