| There are two basic types of rollers used in | | | | processing industry uses stainless steel or PVC rollers. |
| conveyors. One is the load-bearing roller, which | | | | There are specially designed rollers that can spray |
| supports the weight of the material placed on the | | | | water to wash the material being carried. For |
| conveyor and helps to move it. These have to be | | | | conveyor bends, tapered rollers are used. Some |
| selected mainly according to the weight that is to be | | | | manufacturers strive to reduce noise to the levels |
| carried. | | | | recommended by the Occupational Safety and Health |
| The other type is the 'return' or 'lower' Conveyor Roller. | | | | Administration (OSHA) of the U.S. Department of |
| Some of these have pointed rubber rings in the center | | | | Labor, by improving the design. |
| and flat ones at the ends. The pointed rings break up | | | | Another variety used in conveyors is the impact roller. |
| the remains of carried material sticking to the belt. The | | | | This is a support roller covered with shock absorbing |
| flat rings protect the edges of the belt and facilitate its | | | | rubber rings and is used mainly in systems moving |
| smooth return so that the loading can be continuous. | | | | heavy materials. It is fitted at the loading points to |
| They also prevent the belt from migrating beyond the | | | | reduce the impact of the materials falling on to the |
| tolerance limits. The return rollers can be equipped to | | | | conveyor belt. It may be motorized or gravity |
| clean themselves. The automatic cleaning of the | | | | operated. |
| conveyor belt and the rollers reduces the maintenance | | | | The rollers move on bearings. Pre-lubricated bearings |
| cost considerably. | | | | that are supplied by some manufacturers can minimize |
| Conveyor Rollers are normally manufactured from mild | | | | maintenance cost to a great extent. Also contributing |
| steel, stainless steel, PVC or aluminum. There are | | | | to the operating cost reduction are high-tech internal |
| different types to suit for specific uses. Food | | | | motors to drive the rollers. |