OMICRON rollers are suitable for belt conveyors and to transport corrosive material in harsh environmental conditions (salt and fertilizer industry production). Tube and bushes are thermoplastic. Tube reinforcements gurantee optimal load. Integral bearing protection is given by triple labyrinth and additional screen guard. To give greater inner resistance to possible corrosion there are no exposed metal parts. Type 6202 and 6204 bearings are pre-lubricated and sealed for life.