Using the international standard designing and manufacturing technology, our company has improved the designing and production ability to a higher level. The Return Roller/Idler produced here enjoy minimum revolving resistance, long life, small maintain work and high load capability. Our company adopts special fine welding steel pipe for Roller, and does puncture processing in the tube. The roundness is controlled in special tolerance scope. The axle is according to standard tolerance and manufactured by fine cold drag steel. The bearing housing has been manufactured after stamping many times by the cold griped steel.