... harbor,etc 3.Standard:ISO,CEMA,DIN,JIS Used to support the conveyor belt and are installed on the groove- ... shape frame, groove-shape forward inclined idler frames.high ploymer roller, macromolecule roller,UHMW-PE roller1. High wear-resistance, low friction and ... . antistatic, aging, flame resistance, acid and alkali resistance4. can stand impact and vibration5. the temperature will be -40--80 Celsius ...