Let's be honest: when a conveyor belt breaks or wears out at a plant, the belt itself is usually blamed—"poor quality," "it wore out quickly." But how often do engineers look deeper, specifically at the condition of the drive pulleys?
Over two decades of work in Uzbekistan, we at Belting Rezina have seen hundreds of kilometers of damaged track. And in a vast majority of cases, the diagnosis was the same: the belt was "killed" by a bare metal drum. The solution to this problem costs tens of times less than a new belt, and it's called lining.
The Metal-on-Rubber Problem: Hidden Losses
Why is a bare metal drum bad? It's all about physics. Steel has a low coefficient of adhesion to rubber. As soon as the belt is subjected to significant loads or moisture and dust enter the system (which happens constantly in our quarries and construction sites), the belt begins to slip.
What does this lead to in practice?
- Sandpaper effect: When the drum slips, it literally grinds away the bottom cover of the belt. You lose belt thickness in weeks, even though it should have lasted for years.
- Over-tensioning: To stop the slippage, workers begin to tighten the belt. The result is catastrophic stress on the bearings and shafts, which eventually fail.
- Tape convergence: Dirt and debris easily adhere to bare metal, creating "bumps." This causes the tape to drift, leading to edge damage.
Drum Lining: What Does It Mean for Your Business?
Lining is the process of coating the drum surface with a special wear-resistant rubber coating. We typically use rubber with a diamond-shaped profile (knurling).
What you get as a result:
- Maximum grip: The friction coefficient increases significantly. The belt moves smoothly even when fully loaded and in high humidity.
- Self-cleaning: The diamond-shaped grooves act like a tire tread, channeling water and pushing dirt out of the contact patch, preventing it from sticking to the drum.
- Tension reduction: You no longer need to overtighten the belt until it rings. This protects both the belt cord and the expensive bearing assemblies.
- Protection of the drum itself: The rubber takes the brunt of the abrasive wear, protecting the steel drum shell from corrosion and abrasion.
Why should you trust Belting Rezina with your lining?
It might seem like a simple matter to glue rubber to metal. But in the B2B segment, the devil is in the details. A poor-quality lining can peel off within a week, turning into tattered pieces that can jam the conveyor.
We approach the issue professionally:
- Special adhesives: We use cold vulcanization systems that provide rubber-to-metal adhesion greater than the strength of the rubber itself.
- Correct profile: We select the rubber hardness (Shore A) and grooving type depending on your load—whether it's soft grain or aggressive crushed stone.
- On-site service: We don't need to transport your multi-ton drum to the workshop. Our teams perform the lining directly on the conveyor installation site, minimizing downtime.
Engineering life hack: If your conveyor operates outdoors in Tashkent or Navoi, lining helps prevent "first start slippage" on cold mornings when condensation forms on the metal.
Smart savings in 2026
In today's economic reality, those who know how to calculate TCO (total cost of ownership) win. Spending a small amount on drum lining today means saving millions on a new belt tomorrow. It's simple math, and leading industrial enterprises in Uzbekistan have already appreciated it.
Want to extend the life of your feeds?
Contact us at belting.uz. Our specialists will audit your drive units and offer a solution that will keep your conveyor running smoothly.