Idlers and frames
Idlers are an important component in any conveyor system as they are used to support the conveyor belt and the load carried on the belt.
There are a significant number of idlers on a conveyor and if the incorrect idlers are selected, the subsequent problem manifests itself along the entire conveyor length!
Idlers are the ‘low friction sliding surface’ over which an endless conveyor belt is ‘dragged’ by the drive pulley(s), enabling a conveyor to operate for many thousands of hours without wearing out the belting.
Avishkar Industries are specialized in designing Idlers.
1. TROUGHING / CARRYING IDLERS
These are to support the loaded belt. They are designed and fabricated to have the smoothness of rotation, enough capacity to carry the load designed, minimum frictional resistance per rotation, long life, easy maintenance, and replacement; usually designed for troughing angles of 15, 20, 25, 30, 35 and 45 degrees. To prevent side trip of the belt and automatic alignment, a forward tilt for side rollers is provided.
2. BELT TRAINING / SELF-ALIGNING CARRYING IDLERS
These are used among normal carrying idlers. The idler base is designed and fabricated so as to train the belt. The upper frame carrying the idler roller swivels around a vertical pivot with guide rollers fixed
3. IMPACT IDLERS
These are used to support the loaded belts at the loading points of the conveyor. Abrasive and corrosion resistant rubber discs are provided on rollers to take the impact of falling material. They can be installed in the heavily dusty area. The troughing angles will be the same as the carrying idlers.
4. TRANSITION IDLERS
These are placed between the final troughing idler and the head pulley to support the belt during its transition from a concave to a flat contour. The end rollers can be adjusted vertically to match the changing contours of the belt during the critical period of transition.
5. GARLAND IDLERS
The rollers are connected with links to have free action. The idler is hung from the brackets fixed on both sides by means of U-bolt.
6. BELT TRAINING / SELF-ALIGNING RETURN IDLERS
These are similar in construction and characteristics of the self-aligning / Carrying Idlers. The top frame has a facility for fixing guide rollers.
7. RETURN IDLERS
These are used to support the return run of the belt. The fixing brackets are designed so as to have enough clearance between the belt edge and the brackets or conveyor structures when it is misaligned.
8. RETURN IDLERS WITH RUBBER DISC
High abrasion resistant plastic/rubber rings are mounted on the return idlers which effectively prevent clogging of sticky material to the return roller surface.