1.Material: HDPE 2.Dia: 60,76,89,108,114,127,139,152,159 etc 3.Feature: Anti-dust,water proof 4.Structure: conveyor syste hdpe conveyor rollerThe shell, bearing house and labytinth are all manufactured from the most famous polymer material UHMW PE(Ultra High Molecular Weight Polyethylene). Which own the best self-lubrication, impact absorbing propertie and the highest resistance to abrasion. hdpe ...