Advanced Materials & Tribology offers Stainless Steel made Linear Motion Guide. Advanced Materials & Tribology supplies a wide range of Oil-less self-lubricated Bearings and Plates, Self Lubricating Bushes and Pump Bearings. Advanced Materials & Tribology is an ISO certified company. The Stainless Steel made Caged Ball Bearing eliminates friction between the balls and provides improved grease retention, minimizing dust generation.