Belt Cleaner Supplier: 7 Questions to Cut the Sales Talk
Choosing a primary belt cleaner supplier is an engineering decision that too often gets made on a brochure and a handshake. This week the Queensland Mining and Engineering Exhibition puts hundreds of suppliers in one room in Mackay, which makes it the ideal place to ask the questions that actually matter. Same claims get made on every stand: longer life, less carryback, better value. The difference between a supplier who can prove it and one who can only say it comes down to seven questions.
None of these need a lab. They need a straight answer. If a supplier reaches for marketing language instead of a mechanism, a number, or a document, you have your answer already.
01What does your tensioner do to contact pressure as the blade wears?
"Walk me through the pressure at the belt from a new blade to a fully worn one."
This is the question most suppliers cannot answer cleanly, because most tensioners cannot hold a line. A spring tensioner follows Hooke's law, so belt cleaner blade wear rate and contact pressure drift as the blade wears down: pressure climbs if the crew keeps re-tensioning, or decays if they leave it alone. The industry-accepted target for a primary cleaner is a low pressure of around 14 kPa (2 psi) at a peeling angle. A good answer explains how the tensioner holds near that value across the full wear stroke, not just at install. A weak answer talks about the gauge reading at setup.
02What is the blade-to-belt hardness differential, and why that number?
"What hardness is the blade, and how did you arrive at it for my belt?"
Cleaning is governed by the blade-to-belt hardness differential, not blade hardness alone. Too hard and the blade risks the belt cover and splice; too soft and it wears out fast without cleaning. A credible supplier can explain where their blade sits relative to the belt and why, usually landing in the 92 to 94A range for polyurethane primary duty, and can reference the wear mechanics behind it. If the answer is just "ours is harder," they are selling a spec sheet, not an application.
03Can you show wear-rate data from an operation like mine?
"Show me measured wear from a comparable belt width, speed and material."
Anyone can quote a lifespan. Ask for the evidence behind it. Real conveyor belt cleaning Bowen Basin data, taken from a comparable coal operation at a comparable belt speed, tells you far more than a headline figure. Look for measured wear over time, even wear across the blade face, and the conditions the data came from. Vague claims with no operating context are a flag, especially for high-speed coal where geometry and speed change everything.
04Is this primary or secondary duty, and are you selling me the right one?
"Which position is this blade actually designed for?"
The primary cleaner vs secondary cleaner distinction is not marketing, it is the whole basis of correct selection. The primary cleaner at the head pulley removes the bulk of carryback at a peeling angle and low pressure. A secondary cleaner takes the sticky fines the primary leaves. A supplier who blurs the two, or pushes one product for every position, is fitting their catalogue to your conveyor rather than the reverse. A good answer starts with belt width, speed, splice type, material and moisture, then names the position.
05For underground coal: where is your FRAS certification and dossier?
"Show me the FRAS test evidence and the documentation my site has to hold."
For underground coal there is no soft version of this question. FRAS compliance underground coal Queensland is a legal and engineering requirement, and a compliant blade has to be backed by test evidence your site can produce on audit. A supplier of a FRAS scraper blade QLD underground coal should be able to hand you the certification and explain the dossier you need to keep, not just assure you it is "FRAS rated." If they cannot produce the paperwork, the product is a liability underground regardless of how it cleans.
06How do you quantify total cost of ownership, not blade price?
"Take me past the unit price to the cost per tonne cleaned."
The cheapest blade is rarely the cheapest decision. Conveyor belt cleaner total cost of ownership pulls in changeout frequency, clean-up labour, carryback spillage, idler and pulley damage, and belt life, none of which show on the purchase order. A supplier who only competes on unit price is inviting you to ignore the costs that actually move your maintenance budget. A strong answer frames the blade as one line in a lifecycle, and can show where the savings come from.
07If carryback comes back, how do you diagnose the root cause?
"When the problem returns, what is your process for finding out why?"
Carryback has several drivers, and most of them are not the blade. Replacing a blade without diagnosing the cause resets the cycle at full cost and fixes nothing. Ask what the supplier does when performance drops: do they look at tensioning, splice condition, belt tracking, material change and installation, or do they just sell you another blade? Carryback spillage idler damage keeps compounding when the root cause is never found. A supplier worth standardising on brings a diagnostic method, not just a part.
08How to use these on the floor
You do not need all seven every time. Pick the three that map to your worst current problem and lead with those. Bring one worn blade photo if you can. The point is not to catch anyone out, it is to move the conversation from claims to evidence, because that is where a genuine conveyor scraper blade supplier Australia pulls ahead of the crowd and a reseller runs out of road.
For the maintenance manager
These questions turn a stand visit into a diagnosis. If a supplier can explain the mechanism behind your carryback, they can probably fix it. If they only quote a lifespan, keep walking.
For procurement
Every question here produces something defensible: a number, a document, a mechanism. That is the evidence trail you need to justify a supplier decision on lifecycle cost and compliance risk, not price alone.
Ask FM8 the same seven questions
FM8 answers with wear data, hardness reasoning, FRAS evidence and a carryback diagnostic, not adjectives. Put us to the test.
Contact FM8