The roller is an important part of food conveyor, because there are many roller on the belt conveyor, thus which is account for more or less 1/4 of total price. Moreover, the maintenance and replacement of rollers are also a major expenditure.

As the main component part of belt conveyor, the roller undertakes the seventy percent resistance force, so we should pay more attention to factors which influence the performance of belt conveyor roller during the choice, operation and maintenance.