Melco design around and use only the best materials available, including tubing, shafting and bearings, many of which are designed and manufactured specifically for use in conveyor idlers. Deep groove ball bearings are sized to meet applicable duties, and provide long, maintenance free life. Tubing supplied in accordance with SABS 657 Part III (Conveyor Tube), is accurately manufactured with ovality, straightness and wall thickness controlled to tolerances as specified by Melco to improve the end product.