Exterra® Primary
Belt Cleaner

Meat and Potatoes

Aggregate primary belt cleaners — also known as pre-cleaners — are designed for installation at the head pulley just past the point of material discharge from the conveyor.

Superior’s Exterra Primary Belt Cleaner, as a urethane-based cleaner, scrapes the top of the belt and forces coarse carryback material onto the stockpile or into another intended target.

Without this primary belt cleaning stage, which typically removes about 70% of carryback, fugitive material will stick to return rolls, pile up below the conveyor and create costly maintenance issues like belt mistracking and damaging spillage.

  • Belt widths 18” – 72” (457 – 1,828mm)
  • Blade widths 10” – 70” (254 – 1,728mm)
  • Pole lengths: 48” – 114” (1,219mm – 2,895mm)



beefy blades

Up to 40% bigger blades for longer lasting cleaning power.


Thick apex

A fatter blade tip generates more cleaning power at this crucial point of attack.


In-House Urethane

Internal urethane production improves quality, consistency and lead times.


Tensioning nut

Standard systems are equipped with a simple to use wrench tensioning nut.

New Options to Simplify Maintenance

SFL Tensioning

  • Patented spring automatically maintains tension
  • No need to reset tension until blade is replace

Click Tensioning

  • Adjustable dial sets tension according to belt width
  • Cast aluminum cover protects springs from material
Exterra® Primary Belt Cleaner with Click Tensioner Installation Animation


Exterra® belt cleaner – click tensioner Installation

Get a parts overview and see the steps involved for set-up of the click-tensioning system on a Primary Belt Cleaner.


Belt Cleaners

Controlling Costly Carryback Material

When left unchecked, material stuck to the belt causes buildup on idlers, pulleys and other components.



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Exterra Primary Literature

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Exterra SFL Primary Literature

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Conveying Components Handbook

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