... diameter 178mm,diameter 194mm, diameter 219mm. They almost cover all belt width requirement. The correct idler length could ... General steel idlers consists of idler shell, spindle, bearing, bearing house, seals equipment and axial fixed unites.Features: ... high precision roller, ensuring the strong load, low shaking and less noise. Rollers,Idler,Idler Roller,conveyor roller bearing housing, labyrinth ...