Welcome to Vishwa Group

Idlers Rollers

Vishwa has been manufacturing Conveyor Idler sets for over the last five decades & during the course of this long experience, necessary development has been made to offer the most reliable & well- designed idlers for bulk material handling systems. Idler rollers & their brackets are manufactured to suit individual conveyor designs as per Indian or other standard codes & our manufacturing facility covers idlers for capacities between 50 TPH & 8000 TPH. The wide range of different types of idlers to handle coal, iron ore, lignite, cement & other such bulk materials include:

  • Troughing & Transition Idler sets including Brackets
  • Return Idler sets including Brackets for single roll/ 2 roll designs
  • Impact Idler sets including Brackets
  • Self Aligning Troughing & Return Idler with Guide Roller, complete set

The idler sets are complete with their brackets of fixed and rigid support or garland type as per customer’s requirement.

Construction Features

Idler Size

Typically roll diameter ranges from 88.9 mm to 219 mm for 500 mm to 2400 mm wide Belt Conveyor, selected as per IS:11592-2000 (Reaffirmed 2005).

Standards

The idlers are designed as per IS:8598/ISO-1537 specifications

Shell

ERW or seamless (HFS & CDS) steel tubes are used for the shell of idlers as per IS:9295

Bearing Housing

Special CRCA steel sheets are used, which are light self-weight for reducing power consumption of conveyor.

Bearing

Single row deep groove ball bearings/Seize resistance ball bearings (life-lubricated) are used as per applicable standards. Ball bearing satisfies deflection criteria without unreasonable increase in shaft diameters between the bearings.

Shaft

Conforms to EN8 as per BS: 970/C40 as per IS:1570.

Sealing

All Vishwa make rollers incorporate multi-labyrinth sealing to protect the bearings. The grease filled multi-labyrinth seal retards the ingress of contaminants to the bearing

Lubrication

Rollers are grease packed and “sealed for life”. Hi-lithium based grease is filled in measured quantity for the entire designed rated life. Vishwa also manufactures re-greasable type of idlers based on client’s specification.

Testing

Water jet test for ingress of water, dust penetration test & friction factor test are performed in each idler roll to ensure its performance & quality standards. However, the roll dia, roll length, shaft length & bearing size may be made to suit the customer’s special requirement.



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