RKM/GCSnon-drive nylongravity roller, stainless gravity roller, weld pipe gravity roller Roller Dia (mm) Roller SpecRemarks 25, 38, 50, 57, 60, 63.5, 76, 89---- 1. carbon steel, stainless steel, pvc, nylon 2. zinc-plating, galvanizing, chromeorplated 3. Use press bearing or precision bearing 4. shaft could be spring-loaded or fixed. 5. All rollers delivered are attached with QC inspection reports.Offer tooling designing service 1. Gravity roller widely used in roller conveyor in light-industries for bulk material handling like manufacturing line, assembly line, packaging line, conveyor machine and logistic store etc, 2.RKM/GCS gravity roller has PP (press bearing) or PH (precision bearing). 3. Gravity roller could be spring-loaded for easy mounting. Or in fixed shaft type. 4.RKM/GCS non-drive gravity roller could be made of nylon, weld pipe, stainless steel. For nylon gravity roller, the color could be grey or white. 5. Steel gravity roller is often zinc-plated. Good zinc-plating could well protect the roller. 6.RKM/GCS gravity rollers falls into lots of categories. Gravity roller, light-duty rollers, snub roller, end roller, pulley roller, pvc roller, sprocket roller, retractable roller, taper roller, drive roller, non-drive roller. All these roller used in bulk material handling. Welcome to contact with us for any related quesiton. Further check www.rkm.cn