Belt Idlers are made both with and without flanges for most common belt designs, including flat, round and V-belts. They are also generally mounted on standard bolts. Diameters range from 2-1/16" to 8", depending on configuration. Applications include agricultural and power transmission equipment, and conveyor systems.Generally used as tighteners or direction changers; available for all standard, flat and "V" belts. Permanently lubricated and sealed against grime and dirt. Fit into existing design with little or no engineering changes, or readily adapted to new designs.