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Using the international standard designing and manufacturing technology, our company has improved the designing and production ability to a higher level. The idlers produced here enjoy minimum revolving resistance, long life, small maintain work and high load capability.  The company adopts special fine welding steel pipe for idler, and does puncture processing in the tube. The roundness is controlled in special tolerance scope. The axle is manufactured by fine cold drag steel according to standard tolerance. The bearing housing has been manufactured after stamping many times by the imported cold griped steel.     The idler shell and bearing housing have been welded together by the automatic welding machinery hand. Then it forms a whole high strength structure.   The bearing, which uses the world famous brand, is the big roving crack, deep groove ball and double sealing bearing. It makes the idler has the ideal static and dynamic balance that is bette