Idlers | Conveyor belt idlers | Belt conveyor idler | Roller | Conveyor belt roller |Types of idler

In this video I have explained about different types of idlers used in conveyor belt system and its function. Idlers upon which the load-carrying portion of belting is supported is called the carrying idler or troughing idlers.Troughing idlers are found on the carrying-side, along the length of the conveyor. On any particular conveyor these idlers are identical, as are the bases.
The troughing idlers comprise a center idler roll of a defined width, and 'wing' idlers on either side of the center roll.
Unlike the center, horizontal roll, the wing idlers are cranked up to an angle known as the troughing angle.
The garland idler set comprises either 3-roll or 5-roll idlers joined together at the ends of their respective shafts by special lugs, to form a continuous 'chain' of idlers.
Where return idler sets comprise two rolls, a support frame is required which supports the idler pair and attaches the idlers to the conveyor frame. This 2-roll design forms the return belt into a 'v' trough and these return idler sets are referred to a 'V' return idlers. The trough angle of the 'V' return idler is usually 10 degrees.
Wherever material is loaded onto a conveyor belt, impact idlers are installed beneath the troughed belt over the full loading length.
Impact idlers sets are spaced at intervals of typically 350 mm to 450 mm in order to provide a comprehensive support base for the belt.
Impact idlers comprise a small diameter shell, typically 'd' = 89 mm diameter, fitted with concentric rubberized rings at close intervals. These rubber rings provide a cushioning effect in the event of lumps of material falling onto the belt where an idler is located beneath the point of impact. The overall impact idler diameter 'D' = 152 mm
Return self-cleaning rollers with helical rubber rings. Return rollers employed to reduce the deposit of material by operating on the surface of the dirty side of the belt in order to support the belt when the material is being conveyed is very viscous.
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