Because of eccentric loading, soiling slipage of the material to the drum pulleys and idlers roller may cause the belt to run crocked to prevent the belt from running to the rollers self aligning idler of various angles and design are available.

 SUNGDA idlers are manufactured with the following specifications:

• Belt width - 250mm to 2,600mm
• Belt carrying capacity - 10tph to 20,000tph
• Belt speed - 0.1m/sec to 5.4m/sec
• Roller diameter - 60.3mm to 219mm
• Bearing size - 420204 (20mm bore) to 6318 (90mm bore)