Hey there, if you’re in the mining, recycling, or heavy material handling game, you already know aramid conveyor belts are the unsung heroes that keep your whole operation moving. They’re tough, tear-resistant, way lighter than steel cords, and can handle way more stress than standard rubber belts—perfect for hauling that super abrasive rock, hot sinter, or sharp recyclables day in and day out. But here’s the thing: even the best aramid belt won’t last long if you skip picking the right belt cleaners. I’ve been supplying aramid belts for over a decade, and I’ve seen way too many folks blow their budget on cheap cleaners that either tear up their aramid belt in a week or do such a bad job cleaning that carryback clogs up everything, causes downtime, and eats into profits. So let’s cut through the jargon and get real about how to pick belt cleaners that actually work with aramid belts—not against them. Aramid Conveyor Belt
First off, let’s talk why aramid belts are different. You don’t want to treat ’em like regular rubber belts. Aramid’s got that high tensile strength, but it’s also got a smoother, more abrasion-resistant surface than standard rubber, right? Wait, no—wait, actually, the top cover of aramid belts is often a specialized rubber compound (usually nitrile or synthetic blend) designed to stand up to heat and sharp stuff, but the aramid core is super sensitive to sharp objects and excessive friction. I’ve had customers call me panicking because a cheap, hard carbide blade cleaner ripped a chunk out of their aramid belt’s top cover, and a week later, it blew out into a tear that shut down their mine for 36 hours. That’s the kind of mistake you don’t want to make. So the first rule: forget the one-size-fits-all cleaners you use for old nylon belts. Aramid’s needs are specific.
Let’s start with the basics: what do belt cleaners actually do? They scrape off carryback—material stuck to the bottom of the belt after it passes over the head pulley. Carryback might sound trivial, but it’s a killer. It can fall onto the return side of the conveyor, build up in impact areas, jam idlers, cause fires (if you’re hauling coal or hot stuff), and even abrade the bottom of your aramid belt over time. So cleaners need to do two main things: remove that carryback, but not damage the aramid belt’s top cover. That’s the balance everyone misses.
Now, let’s break down the types of belt cleaners, and how they work (or fail) with aramid belts. First, primary cleaners—these are the ones you mount right at the head pulley, doing the heavy lifting of removing most carryback. Then secondary cleaners, which are optional, but good for that last 5-10% of stubborn stuff.
Primary cleaners: There are three main types here—rigid blade (usually carbide or steel), polyurethane blade, and rotary cleaners. Let’s be real, rigid carbide blades were the go-to for years for heavy duty. But here’s the catch: those hard, sharp edges? They dig into the aramid belt’s top cover, especially if you adjust them too tight. I’ve seen a customer set a carbide blade so tight it left a 1/4 inch groove across their aramid belt—total waste of a $1,200 belt section. The only time rigid blades make sense with aramid is if you’re hauling super, super abrasive material like quartz sand, and even then, you need a blade with a rounded edge, not a sharp one. Most off-the-shelf rigid blades have sharp edges, so you have to grind ’em down smooth before install. That’s a extra step most folks skip.
Then there’s polyurethane primary blades. This is where most of my customers end up once they switch to aramid belts, and for good reason. Polyurethane is tough, flexible, and has a high coefficient of friction, so it grabs carryback without digging in. But not all polyurethane is created equal. You need a high-grade, oil-resistant polyurethane—cheap polyurethane blades will wear out in a month, and worse, they’ll compress over time, so you have to adjust them tighter, which eventually starts damaging the aramid belt. I recommend looking for polyurethane with a durometer rating between 85A and 90A—soft enough to not tear the belt, but firm enough to scrape off wet, sticky mud or wet ore. If you’re hauling hot material (over 180°F), make sure the polyurethane is heat-resistant too—regular polyurethane melts at around 140°F, so if you’re handling hot sinter or steel mill waste, you need a special heat-grade polyurethane blade. That’s another mistake I see: folks use standard polyurethane cleaners for hot loads, and they just turn into goop that does nothing.
Rotary primary cleaners—these are the ones with a rotating drum covered in rubber or plastic paddles. They’re less common, but they’re great for aramid belts because there’s no single blade edge that can dig in. The paddles sweep across the belt, so friction is spread out, not concentrated in one spot. They’re also gentler on the belt, which is perfect for long, high-speed conveyors. The only downside is they’re a bit pricier upfront, and they take up a bit more space. But if you’re running a 1000-foot conveyor at 500 FPM, the extra cost is worth it to avoid belt damage and downtime. I had a recycling customer switch from rigid blades to a rotary cleaner on their aramid belt, and their belt life went from 18 months to over 3 years. That’s a no-brainer.
Now, secondary cleaners—these are mounted after the primary, on the return side of the belt, to get that last bit of carryback. A lot of people skip these, but I swear by them for aramid belts, because even the best primary leaves some stuff behind. The same rules apply here: no sharp edges, no excessive friction. For secondary, I usually recommend polyurethane blades again, but sometimes scrapers made of vulcanized rubber—they’re even gentler. If you have a lot of sticky material like wet clay or sludge, a secondary cleaner with a series of small, flexible rubber wipers works better than a single blade. And whatever you do, don’t use a metal scraper for secondary—you’ll scratch the belt’s bottom cover, which can lead to tears in the aramid core. I learned that the hard way: a customer tried a metal secondary scraper, and within two months, they had to splice a 10-foot section of their aramid belt because of scratches. Total cost: over $5,000. Ouch.
Okay, so that’s the types, but there’s more to picking the right cleaner than just the material. Let’s talk about installation and adjustment—two things 80% of folks mess up, which is why their cleaners are failing or damaging their belts. First, the angle of the blade. It should be between 15 and 20 degrees, leaning against the direction the belt moves. If you set it at a steeper angle, it digs into the belt. If it’s too flat, it doesn’t do any cleaning. I see this all the time: someone just slaps a blade on and cranks it tight until it scrapes, but they don’t check the angle. For aramid belts, you want a lighter tension than you would for rubber belts. A good rule of thumb: when the belt is running, the cleaner blade should deflect about 1/8 to 1/4 inch, not more. If it’s deflecting less than that, you’re too tight, and if it’s more, you’re too loose. Most adjustable cleaners come with a gauge, but if yours doesn’t, just use a small ruler. It takes 2 minutes, and it saves you a ton of belt damage.
Another thing: match the cleaner to your specific load. Are you hauling dry, fine material like fly ash? Or wet, sticky stuff like sewage sludge? Or hot, sharp material like ore? Let’s break that down. If it’s dry, fine, low-abrasion material—polyurethane blade, primary, maybe skip secondary. If it’s wet, sticky, high-carryback material—go with a primary polyurethane blade (rounded edge) plus a secondary wiper, or a rotary primary. If it’s hot material (over 150°F)—heat-resistant polyurethane, no standard stuff. If it’s super abrasive, sharp material like quartz—rounded-edge rigid carbide only if you have to, but polyurethane works too if you get a high-abrasion grade. I had a steel mill customer who was hauling hot sinter on aramid belts; they tried a standard rigid blade, and in 2 months it had torn their belt. Switched to heat-grade polyurethane, adjusted the tension right, and now the blades last 6 months, no belt damage. That’s way better.
Wait, also—what about splices? Aramid belt splices are usually vulcanized, right? They’re strong, but they’re thicker than the belt itself. So you have to make sure your cleaner doesn’t hit the splice. If your blade is too long or the cleaner isn’t spaced right, it will catch the splice, pull it loose, and that’s a whole other headache. Most good cleaner systems are designed to accommodate splices, but if you’re buying a cheap, one-size-fits-all, you might not get that. I always recommend going with a cleaner that has adjustable blade length, so you can trim it to match the width of your aramid belt, and make sure it doesn’t go past the edges or hit splices.
Now, common mistakes to avoid, because even if you pick the right cleaner, you can mess it up. First, buying the cheapest thing you can find online. I get calls every week from guys who ordered a $50 polyurethane blade from Amazon, and it’s falling apart in a week. For aramid belts, you want cleaners made specifically for aramid, not generic cleaners. Generic cleaners don’t account for the smooth top cover of aramid, so they don’t grip as well, or they’re made with material that’s too abrasive. Second, not regular maintenance. Cleaners don’t install and forget. You need to check them every couple weeks—wipe off any built-up material, make sure the tension is still right, check for wear on the blade. A blade that’s worn down 1/8 inch is too short, and it’s not cleaning, so carryback builds up. If you don’t adjust tension, over time the blade wears into the belt. Third, mixing and matching parts. Like, getting a good primary cleaner but a cheap secondary, or a carbide blade paired with a bad mount. It all has to work together. I’ve seen customers spend $800 on a primary cleaner, then use a $20 rubber scraper for secondary, and the rubber one wears out in a month, so carryback is still there.
Another thing I always tell my customers: test before you commit. A lot of suppliers will let you rent a cleaner for a week, or sell you a sample blade to try out on a small section of your conveyor. Don’t just buy a whole set without testing. I had a customer with a recycling plant that handled sharp plastic and metal; they thought a carbide blade was the only way, but when they tested a polyurethane blade for a week, it cleaned just as well, and didn’t leave any tears on their aramid belt. Testing saves you from wasting money and downtime.
Wait, let’s circle back to why this matters for your bottom line. Aramid belts aren’t cheap. A 500-foot, 48-inch wide aramid belt can run you $15,000-$20,000. If a bad cleaner cuts that life in half, that’s $10k lost every 18 months instead of 3 years. Plus, downtime is killer—if your belt goes down, you’re paying workers to stand around, missing deadlines, maybe paying penalties. I’ve had a customer lose $120,000 in a single day because a bad cleaner tore their aramid belt and shut down their mine for 36 hours. That’s way more than the cost of a good set of cleaners. So picking the right cleaner isn’t just about keeping your belt clean—it’s about protecting your biggest investment.
Now, let’s get practical. If you’re working with me as an aramid belt supplier, I don’t just sell you a belt and vanish. I help you pick the right cleaners for your specific operation. I ask you questions: what material do you haul? How hot is it? What’s your belt speed? How long is your conveyor? Then I recommend primary and secondary cleaners that work with your aramid belt, not against it. I even help with installation and adjustment tips, so you don’t mess that up. Because at the end of the day, my business depends on your aramid belts lasting a long time and working well—so I have a stake in the cleaners being right.
Wait, let’s make sure we didn’t skip anything. What about cold environments? If you’re working in a place where it’s below freezing, regular polyurethane gets brittle, right? So you need a cold-resistant polyurethane blade. That’s another specific case. I had a customer in northern Canada hauling ore in -20°F weather; standard polyurethane blades cracked in a week, switched to cold-grade, and they’ve held up fine for 6 months. That’s a specific consideration a lot of generic cleaners don’t account for.
Also, what about very high speed conveyors? If you’re running over 600 FPM, the friction between the blade and the belt is higher, so you need a cleaner that can handle that—maybe a rotary cleaner, or a harder grade polyurethane, to keep up with the speed and not wear out too fast. I had a cement plant running at 700 FPM; they tried a standard polyurethane blade, and it wore out every 3 months, switched to a 90A durometer heat-grade, and now it lasts 9 months. That’s a big difference.
So to wrap this up, the key steps are: 1. Remember aramid belts are different—no generic cleaners. 2. Pick the right blade material (polyurethane for most cases, rounded rigid carbide only if needed, rotary for high speed/low friction needs). 3. Match the cleaner to your load: wet/sticky? Add secondary. Hot? Heat-grade. Cold? Cold-grade. Abrasive? Rounded edge. 4. Adjust and install correctly (15-20 degree angle, 1/8-1/4 inch deflection, no splice interference). 5. Test before you buy, and do regular maintenance. 6. Don’t cut corners—cheap cleaners cost you more in belt replacements and downtime.
If you’re using an aramid conveyor belt and feeling overwhelmed by picking the right cleaners, I’m here to help. We work with operations of all sizes, from small recycling yards to large mines, to pair our aramid belts with the perfect cleaners to keep your line running smooth, no damage, no unnecessary downtime. Just reach out, tell me about your setup, and we’ll walk through the best options for you.
Conveyor Belt Monitoring System References:
- Conveyor Belt Manufacturers Association. (2021). Guide to Aramid Conveyor Belt Maintenance and Compatibility. CEMA Technical Bulletin 117.
- Industrial Belt Cleaner Association. (2022). Selection Criteria for Belt Cleaners with High-Strength, Low-Elongation Belt Materials. IBCA Best Practice Guide 402.
- Mining Engineering Society. (2020). Mitigating Carryback and Belt Damage in Aramid Belt Conveyors for Heavy Ore Hauling. SME Annual Conference Proceedings.
- Rubber Manufacturers Association. (2019). Performance Characteristics of Polyurethane Blades for Conveyor Belt Cleaning in Extreme Operating Conditions. RMA Technical Report TR-78.
- Recycling Industry Operators Association. (2021). Best Practices for Conveyor Belt Maintenance in Municipal Solid Waste Recycling Facilities. RIOA Operational Guideline 10-2021.
Alumina Technology (Qingdao) New Materials Co., Ltd.
As one of the most professional aramid conveyor belt manufacturers and suppliers in China, we also support customized service. With abundant experience, we warmly welcome you to buy aramid conveyor belt for sale here and get quotation from our factory. For price consultation, contact us.
Address: No.448, Jiangshan South Road, Huangdao District, Qingdao City, Shandong Province
E-mail: Gloria.zhang@contitech.cn
WebSite: https://www.altechconveyorbelt.com/
