... with about 10 years' experince in belt conveyors, conveyor idler rollers, conveyor rollers, roller frame design and production. All ... Special need: as the buyer's demand.Carrying idler roller types:Trough idler roller: 35° and 45°. Note: We ... and returning rollers)4. Idler rollers parts (Trough idler rollers, parallel idler rollers, adjusting core idler rollers, and impact idler rollers , etc.)5. ...