EPDM High Temperature Sidewall Conveyor Belt
EPDM High Temperature Sidewall Conveyor Belt2
EPDM High Temperature Sidewall Conveyor Belt3
EPDM High Temperature Sidewall Conveyor Belt
EPDM High Temperature Sidewall Conveyor Belt2
EPDM High Temperature Sidewall Conveyor Belt3

EPDM High Temperature Sidewall Conveyor Belt

Custom EPDM high temperature sidewall conveyor belt resists 300℃ instant thermal shock. Ideal for cement, metallurgy, power plant hot bulk material conveying.

Product Overview

The belt uses EPDM rubber as the primary cover compound, paired with high strength heat resistant fabric carcass materials. Special rubber formulation plus dedicated hot vulcanizing process is adopted during manufacturing. Engineers know well that EPDM features high molecular saturation, which brings big challenges in rubber to fabric bonding, low inter ply adhesion risk is a common headache for many belt manufacturers. Our improved vulcanization workflow solves this long standing technical pain point effectively.

Combining high heat resistance, anti ageing performance, stable dimensional behaviour and good flexing property, this sidewall conveyor belt addresses typical failure modes of ordinary heat resistant sidewall belts under high heat conditions: rapid ageing, ply separation, sidewall peeling and premature belt failure. It delivers stable, long run conveying performance for production lines handling hot bulk solids.

 

Key Technical Data

Cover layer aging resistance

(180 ℃ × 168 h)

Before ageing Cover rubber hardness SHA 70
Tensile strength MPa 13.73
Elongation at break % 510
DIN abrasion volume mm3 155
After ageing Cover rubber hardness SHA 80
Tensile strength MPa 12.29
Elongation at break % 437
Change value Cover rubber hardness SHA 10
Tensile strength % 10.5
Elongation at break % -14.3
Adhesion property Cover rubber to fabric ply N/mm ≥12
Fabric ply to ply N/mm ≥11

  

Product Advantages

Reliable Bonding with Custom Vulcanization Process

High saturation of EPDM polymer makes bonding between rubber sidewalls, cleats and fabric carcass one of the well known bottlenecks within conveyor belt industry.

By optimising rubber compound formula and implementing site adjusted hot vulcanizing parameters, we lift inter ply adhesion performance significantly. Under sustained high temperature service, the belt main body, corrugated sidewalls and transverse cleats stay firmly bonded. Common field failures like ply separation, internal bubble generation, sidewall or cleat debonding are largely avoided. This is critical for large angle inclined conveying where cyclic flex stress is constantly applied to sidewall joints.

 

Extended Service Life to Cut Down Total Operating Cost

EPDM cover compound delivers decent abrasion resistance and tear resistance. The whole belt structure keeps good flexibility, resisting repeated flex fatigue during continuous running.

Compared with conventional heat resistant sidewall belts on the market, this EPDM version can reach 2 4 times longer service cycle under equivalent high temperature working scenarios. Plant maintenance teams will see less frequent belt replacement, lower spare part stock pressure and reduced production downtime caused by belt breakdown. For continuous process factories, these indirect cost savings often weigh more than initial belt purchase price.

Field feedback from one cement plant: after switching from standard heat resistant belts to our EPDM grade, they got 2 4 times longer runtime on their clinker transfer line.

 

Robust Heat Resistance Against Thermal Shock & Temperature Fluctuation

EPDM rubber shows far better thermal oxygen ageing, ozone and UV resistance than general purpose rubber grades. It resists hardening and surface cracking when exposed to sustained heat.

Apart from steady high temperature service, the formulated cover rubber survives instant thermal shock up to 300 °C, which frequently occurs when hot clinker, slag or calcined ore drops onto belt surface. Dimensional stability is maintained under heat load; carcass shrinkage and permanent deformation are kept within acceptable engineering range, inter layer bonding strength will not drop sharply with cyclic temperature swings.

 

Good Chemical & Weathering Resistance for Complex Environments

The EPDM compound tolerates weak acid, weak alkali, water vapour and many common industrial chemical agents, making it suitable for conveying hot corrosive bulk solids.

When installed outdoors or under open air plant conditions, the belt withstands sun exposure, rain and big ambient temperature swings. It does not turn brittle quickly under long term outdoor exposure, helping minimise routine inspection and repair workload.

 

Typical Application & Conveyed Materials

 

Engineers and procurement specialists can reference below application matrix for preliminary project evaluation. Final specification should be confirmed combining real site temperature, lump size, impact loading and inclination angle.

Industry Working Sections Conveyed Hot Materials Main Performance Values On Site
Iron & Steel Metallurgy Sintering, iron making, continuous casting process Hot sinter ore, coke, steel slag, return sinter Heat resistant plus anti abrasion. Resist hot material impact; mitigate fast ageing and debonding issues of ordinary belts
Cement & Building Materials Clinker transfer, grate cooler discharge, preheater outlet Hot cement clinker, slag, fly ash, limestone Heat resistance and low thermal shrinkage. Prevent belt deformation and ply separation under clinker high heat
Thermal Power Plant Boiler feeding, ash slag removal, desulphurisation system Hot coal, boiler slag, gypsum, fly ash Heat & corrosion resistance. Adapt to weak acid from desulphurised gypsum plus outdoor weather conditions
Mining & Coal Industry Open pit / underground large angle lifting Raw coal, gangue, hot ore chunks Combine large angle conveying capability with heat resistance, save plant floor space
Chemical & Carbon Processing Coking, carbon production workshops Hot chemical granules, powder feedstock Resist combined damage from high temperature plus chemical corrosion
Non Ferrous Metal Smelting Aluminum, copper, zinc smelting lines Hot furnace charge, alumina, matte, smelting residues Resist high temperature erosion and abrasive wear from molten residues
Grain & Feed Industry Post dry material transportation (food contact EPDM grade) Hot grain, oil seeds, feed pellets Food safe EPDM compound, withstand residual heat from drying process, no material contamination
Waste to Energy & Environmental Protection Incinerator slag discharge, solid waste treatment Hot incineration slag, fly ash, high temperature solid waste Cope with complex chemical composition of waste slag, balance heat and chemical resistance

  

Engineering Notes for Buyers & Site Technicians

  1. Submit key operating parameters during inquiry: maximum continuous material temperature, peak instant temperature, material lump size, belt width, required cleat height, sidewall height, conveyor inclination angle, belt running speed and material throughput. These data help us avoid over specification or under specification.
  2. Even premium EPDM sidewall conveyor belts have service limits. Sharp oversized hot chunks with direct long duration contact over 300 °C will accelerate cover rubber damage. If your site has such extreme conditions, please notify our technical team for structural optimisation suggestions.
  3. Installation and maintenance quality heavily influences actual service life. Mis alignment, excessive tension, poor skirt board friction will cause premature sidewall wear. Guide your on site fit up team to follow conveyor system operation manual.
  4. We support custom dimensions, cleat spacing, sidewall height and special food grade EPDM compound for hygienic material handling.
  5. For project review, you can request our technical data sheet PDF with full lab test records for internal evaluation.

 

FAQ

Q1:What is the maximum continuous operating temperature for EPDM sidewall conveyor belt?

Our EPDM sidewall conveyor belt handles 300℃ short term thermal shock. There is no fixed figure for continuous service temperature. Actual performance varies with rubber compound, carcass fabric grade and how long hot material touches belt surface. Send over your site temperature readings, our engineers will match you with suitable belt grade.

Q2:Why do sidewalls peel off on high temperature sidewall belts?

From real world project cases, peeling mostly comes from several causes: insufficient vulcanization bonding, frequent sharp temperature cycles, heavy hot lump impact, wrong belt tension or conveyor mis alignment. Our custom vulcanization improves inter ply adhesion to lower peeling risk. Even good belt material cannot compensate poor installation or neglect of routine maintenance.

Q3:What information do I need to provide for a quotation?

To get precise technical proposal and price quote, prepare material temperature, lump size, belt width, sidewall height and cleat dimensions. We also need conveyor inclination angle, belt speed and material throughput. Site photos or original drawings help speed up technical assessment.

Q4:Can EPDM sidewall conveyor belt work outdoors?

Yes, outdoor installation works well. EPDM rubber delivers good ozone and UV resistance. It performs better than natural rubber or SBR belts under long term sun rain cycles in plant yards.

 

Get Custom Quotation

Send us your site conditions, material properties and drawing files. Our technical team will go through your application and offer matched product specs plus formal quotation. Feel free to download our technical data sheet for your internal review.

 

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Recently, the engineering service team from QBF rubber was dispatched to a tunnel project site and successfully completed on-site installation guidance for the sidewall conveyor belt. Supported by one-stop full-process technical services, the project’s conveying equipment achieved stable commissioning and high-efficiency operation. Tunnel construction presents tough site conditions, featuring steep conveying angles and considerable risks of material back-sliding and spillage. Breaking away from the traditional product-only supply model, QBF rubber provides a full-chain custom service package for this project. The service scope includes preliminary site survey, working-condition analysis, custom belt selection and design, bespoke belt manufacturing, on-site hot-splicing joint execution and full-cycle installation technical guidance. This complete set of services fully meets the operational demands of steep-angle material handling for tunnel construction. Shield tunnel jobs have tight working spaces, limited on-site manoeuvring, high muck volumes and wet excavated spoil. These conditions commonly cause spoil and fines to stick and pile up on conveyor belts. For this project, QBF rubber Anti-stick Sidewall Conveyor Belt was selected to tackle such field-proven issues. The belt’s special surface treatment resists sticking and enables good self-cleaning capability. It keeps damp tunnel muck and fine sand from clinging to the belt surface, helping avoid common problems triggered by material build-up: belt mis-tracking, slippage, faster-than-normal wear and reduced conveying capacity. Built with heavy-duty sidewalls and cleats, the belt is robust in structure, offers high tensile properties and holds up well against abrasion. It runs reliably for both vertical and steep inclined conveying work, cutting down significantly on material fallback, spillage and leakage. This brings tangible savings in on-site cleaning work and lowers the frequency of equipment maintenance. Having expanded from standalone product supply to end-to-end technical services, QBF rubber keeps addressing practical tunnel conveying challenges through professional, custom-built solutions. Moving ahead, QBF rubber will keep focusing on shield-tunnel muck transport and steep-angle material handling applications. Continuous upgrades to product performance and service frameworks will deliver reliable support for the efficient, eco-friendly and safe running of more engineering projects.
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According to industry statistics, up to 80% of sidewall conveyor belt failures occur due to rigidity loss–induced sagging during operation. QBF rubberaddresses this root cause with an innovative “free zone ” base belt design, significantly extending the service life of sidewall conveyor belts. What Is Belt Sagging and Why Does It Shorten Belt Life? Under heavy load, especially on the return run, the base belt often sags due to insufficient transverse rigidity. This sagging triggers a chain of serious issues: Stress concentration – Sagging causes abnormal flexing at the sidewall root as it passes over the drum, concentrating stress in a localized area. Fatigue cracking – Repeated flexing leads to fatigue cracks at the sidewall root, which can develop into through-wall damage. Baffle detachment – Vibration and deformation from sagging transfer to the baffle connection, accelerating adhesive aging and causing baffle loosening or separation. Once sidewall tearing or baffle detachment occurs, the entire sidewall conveyor belt often fails prematurely. Therefore, solving the sagging problem is the key to extending belt service life. Root Cause of Belt Sagging The core cause of sagging lies in structural deficiencies of traditional base belt designs: Insufficient transverse rigidity – Traditional base belts cannot maintain a flat profile under heavy loads or long-span conditions. Unbuffered stress transfer – The sidewall-to-base belt connection lacks a flexible transition, so abnormal sagging stress directly impacts the sidewall root. Accelerated fatigue accumulation – Repeated flexing at stress concentration points causes cracks to grow from micro to macro levels. Understanding these causes makes it clear: simply increasing sidewall thickness or changing the rubber compound is a temporary fix. The solution must start with the base belt structure. Solution: QBF rubber Free Zone Base Belt Design QBF rubber introduces a “free zone ” base belt design to directly target the root cause of sagging. How the free zone  Works Blocks stress transfer – The free zone  acts as a stress buffer, absorbing and isolating abnormal sagging stress before it reaches the sidewall root. Dissipates flexing energy – The flexible edge allows the base belt to adaptively deform as it passes over the drum, spreading concentrated flexing over a larger area. Protects sidewall and baffles – By mitigating the extra load caused by sagging, the risk of fatigue tearing at the sidewall root is greatly reduced, and the baffle adhesive layer no longer suffers excessive vibration stress. Key Advantages of the free zone  Design Advantage Result sidewall tear resistance Eliminates stress concentration points; fatigue life extended by 2–3 times Baffle detachment risk Smoother operation; significantly slower adhesive aging Overall belt service life Comprehensive service life increased by 30% or more   QBF rubber’s Free Zone Base Belt design achieves a leap from “reacting to sagging consequences” to “eliminating the root cause of sagging.” Summary: Eliminate Sagging at the Source for Longer Sidewall Belt Life The sagging problem in heavy-duty sidewall conveyor belts originates in the base belt structure. QBF rubber’s free zone  design solves this industry pain point by blocking stress transfer, dissipating flexing energy, and protecting both sidewall and baffles. If you are experiencing frequent sagging, sidewall tearing, or baffle detachment with your sidewall conveyor belt, contact QBF rubber for professional technical support and customized solutions.  
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QBF rubber provides professional customized sidewall belt selection services for all types of industrial inclined conveying scenarios. Supported by our independent self-developed selection system and senior German technical experts, we deliver accurate, application-oriented belt solutions tailored to actual site conditions, avoiding specification mismatches and unnecessary performance waste for optimal system operation.
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Maintenance Service

We deliver reliable, plant-focused conveyor belt and system maintenance services designed to prevent unplanned downtime. Our certified on-site teams provide round-the-clock support for routine inspections, belt realignment, wear repairs, component replacements and system tuning. We help industrial facilities maintain stable throughput while lowering long-term operational and maintenance overhead.
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