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Conveyor Idlers: Free Quotes from Suppliers in SA

Compare quotes on conveyor idlers: troughing, return, impact and self-aligning sets with frames. Free request, independent suppliers across South Africa.

  • Quotes from: Conveyor component suppliers
  • Area: All nine provinces
  • Cost to you: Free, no obligation
Troughed conveyor idler sets supporting a loaded rubber belt on a South African mine conveyor
Troughed conveyor idler sets supporting a loaded rubber belt on a South African mine conveyor

Conveyor idlers hold the belt and its load along the full length of the conveyor. The right idler set keeps the belt trough shape, supports the weight and reduces drag. ConveyorBelting.co.za is a free quote-request service. Describe your belt width, trough angle and duty, and independent suppliers quote you directly. We do not supply idlers ourselves, and there is no charge or obligation. Compare quotes on belt conveyor idlers and frames from several suppliers before you order.

Types of conveyor idlers

Idlers are sets of rollers on a frame, and each position on the conveyor needs a different type:

  • Troughing idlers: two, three or five rolls that form the belt into a trough to carry more material
  • Return idlers: flat or V-shaped sets that support the empty belt below
  • Impact idlers: rubber-ringed rolls that absorb shock at loading points
  • Self-aligning and training idlers that steer a wandering belt
  • Transition and picking idlers near the pulleys

Trough angles, spacing and frames

Standard trough angles are 20, 35 and 45 degrees. A steeper trough carries more load but needs a belt with enough transverse flexibility. Roll diameters of 102, 127, 152 and 178 mm are common, matched to belt width, speed and tonnage.

Idler frames must be rigid and square to the belt, since a twisted frame pulls the belt off line. Spacing is usually closer at loading points and wider along the carrying run and the return. Too wide a spacing causes belt sag and spillage. Good design follows SANS 1313 or CEMA class ratings, which set the duty a set should handle.

Why idler quality matters

Idlers are the most numerous component on a conveyor, so small differences add up. A single seized roll can wear through a belt cover in hours. Failing rolls also raise power draw and can create friction heat, a fire risk with coal and dust. Look at bearing and seal design, shell tolerances and corrosion protection when comparing quotes. Mines often add return idlers with rubber discs to limit material build-up.

Inspection and replacement

Condition checks of idlers by sight, sound and, where available, temperature give early warning of failure. Plan changeouts around shutdowns, and keep spare sets on site. Always isolate and lock out before working near a moving belt.

Ask suppliers about rebuild options too. Some will refit bearings and seals to sound shells, which can cut cost on large idler populations. Keep a record of failures by position, so you can spot problems such as belt misalignment, spillage build-up or an undersized idler class on a particular section.

Comparing conveyor idlers quotes

Prices change with rubber and steel costs, the exchange rate and stock levels. When quotes arrive, check:

  • Exact specification: width, carcass and strength, cover grade and thickness, or the part number, size and standard.
  • Quantity and units: per metre, per roll, per item or per set, and any minimum order or cutting charge.
  • Lead time: ex stock, or imported or made to order, and how long that takes.
  • Delivery and VAT: transport to site, offloading of heavy rolls, whether VAT is included and how long the price holds.

What to include in your request

  • Belt width, speed and tonnage
  • Idler type, trough angle and roll diameter
  • Frame mounting style and centre dimensions
  • Quantity and delivery location
  • Material carried and site conditions

Frequently asked questions

Are you an idler supplier?
No. ConveyorBelting.co.za is a free quote-request service. We pass your details to independent idler manufacturers and suppliers, who quote you directly. You pay nothing for the request and are under no obligation to accept any quote.
What is the difference between an idler and a roller?
A roller is the rotating tube with its bearings and shaft. An idler is the complete assembly, usually several rollers on a frame set at a trough angle. People often use the words loosely, so give suppliers full dimensions and a photo.
What trough angle do I need?
It depends on the belt width, belt construction and the material. Most conveyors use 20, 35 or 45 degrees. A steeper trough carries more but needs a belt flexible enough to conform. Ask your supplier or designer to confirm what the belt can take.
How often should idlers be inspected?
Inspect regularly with scheduled walk-rounds, and more often in dusty, wet or high-duty areas. Listen for noise, look for seized or worn rolls and check for heat. Replace failed rolls quickly, as one seized roll can damage the belt.

Conveyor Idlers by province

Conveyor Idlers by city and town

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