Explore our industrial-grade, certified heavy bulk material handling parts. Engineered for durability in mining, metallurgy, coal, and infrastructure.
In the modern industrial landscape, rubber conveyor belts have become the backbone of bulk material transport systems across multiple sectors. From mining operations extracting raw materials from deep underground to port facilities handling millions of tons of cargo annually, heavy-duty rubber belts facilitate the seamless movement of materials that power our global economy. The evolution of these critical components reflects decades of engineering innovation, material science breakthroughs, and an unwavering commitment to operational efficiency and safety.
As bulk material conveying demands higher speeds, larger widths, and steeper inclines, the specifications of conveyor belts must match the harsh physical stress profiles. This is where the Supermax 37x2 Conveyor Belt establishes itself as a leading benchmark for high-tension, medium-to-heavy load applications. Developed for operations that require a balance between high flexibility and rugged structural strength, the "37x2" construction represents an engineering archetype designed to optimize tensile load sharing over a dual-ply framework while offering a generous width profile (nominally 37 inches or customizable to specific metric specifications).
Hebei Boao Rubber Technology Co., Ltd. (known globally by our premium brand "Jinao") has stood at the vanguard of rubber conveyor technology since 2004. With a dedicated 30-acre state-of-the-art production compound in Boye County Rubber Industrial Park, Baoding, Hebei, China, we operate as a fully integrated manufacturer combining rubber chemistry research, product design, precise vulcanization engineering, and comprehensive post-installation service programs. Our certifications and track record of working with leading conglomerates like Datong Coal Group, Conch Cement, and Tsingshan Group demonstrate our absolute commitment to technical excellence and reliability.
Understanding the internal composite architecture and elastomer chemistry that gives the Supermax belt its competitive advantage.
A conveyor belt's nominal performance is determined by its internal skeletal framework (the carcass) and the external protective skins (the rubber covers). In the Supermax 37x2 specification, the belt relies on a dual-ply high-modulus polyester warp and polyamide weft (EP fabric) or polyamide-polyamide (NN fabric) base. Let us break down the exact performance mechanics:
By employing two layers (plies) of high-density EP fabric, the Supermax 37x2 guarantees exceptionally low transient and permanent elongation. The warp threads (polyester) provide high tensile resistance to longitudinal tension, preventing belt sag between idlers, while the weft threads (nylon) offer outstanding troughability, permitting cross-sectional trough angles up to 45 degrees without carcass degradation.
Unlike heavy multi-ply belts which can become rigid and require enormous pulley diameters to avoid flexing fatigue, the 2-ply configuration combines high structural strength with a lower bending resistance. This allows engineers to use smaller drive and tail pulleys, reducing overall drive-head weight and electrical energy draw while maintaining severe impact absorption thresholds.
Depending on target workloads, Boao utilizes custom cover profiles. For abrasive mineral transport, we use DIN X or Y grade natural/synthetic rubber compounds featuring tensile strengths above 20 MPa and abrasion loss below 120 mm³. For high-risk coal or chemical operations, specialized flame-retardant (FR) and acid-alkali resistant matrices are co-vulcanized directly onto the carcass.
| Parameter / Property | Supermax EP 37x2 Standard | Typical Multi-Ply (3-Ply / 4-Ply) Equivalent | Industry Standard (ISO 14890 Reference) |
|---|---|---|---|
| Nominal Width (inches/mm) | 37 inches (approx. 950 mm - customizable) | Custom Widths | Complies with Standard width tolerances |
| Tensile Strength (N/mm) | 400 N/mm to 800 N/mm | 500 N/mm to 1000 N/mm | Minimum rating certified by batch testing |
| Elongation at Reference Load | ≤ 1.5% | ≤ 2.5% | Standard demands ≤ 1.5% for EP fabrics |
| Adhesion Strength (Ply to Ply) | ≥ 4.5 N/mm | ≥ 4.5 N/mm | Exceeds standard 4.0 N/mm limit |
| Abrasion Volume Loss (DIN 53516) | ≤ 90 mm³ (Super-Wear Resistant) | ≤ 120 mm³ to 150 mm³ | DIN X standard ≤ 120 mm³ |
Analyzing how the Supermax 37x2 solves operational bottlenecks in specific geographic zones and extreme manufacturing environments.
In regions like Shanxi, Inner Mongolia, and Shaanxi, coal mines run massive conveyor networks that endure severe thermal swings. The ambient temperature can plunge below -30°C in winter and climb above 40°C in summer. Under these conditions, general-purpose rubber easily undergoes glass transition, cracking and losing its elasticity. The Supermax 37x2 cold-resistant formulation uses specialized plasticizing agents in the rubber matrix that maintain structural flexibility down to -45°C. By leveraging a high-strength 2-ply carcass, the belt minimizes take-up system travel even during high-friction cold startups, mitigating energy spikes and prevention of catastrophic joint shear.
In major bulk shipping ports along the coastlines of China (Tianjin, Qingdao) and Southeast Asia, belts are subjected to non-stop loading cycles. Ocean breezes carry salt spray and moisture, causing accelerated oxidation on standard steel and fabric compounds. The Supermax 37x2 conveyor belt features an anti-hydrolysis, anti-ozone treated cover compound that blocks moisture from penetrating into the internal EP warp threads. This stops carcass delamination before it begins, keeping major ship-loading conveyors operating at maximum throughput (often exceeding 3,000 metric tons per hour) with zero unscheduled downtime.
Cement production involves transferring crushed limestone, clay, and extremely abrasive hot clinker. For plants run by industry titans such as Conch Cement and Jidong Cement, belt wear is a primary maintenance cost driver. Under high-impact loading chutes, sharp rock fragments tear at standard rubber surfaces. Boao's Supermax 37x2 belt incorporates high-density rubber buffer layers combined with high-grade carbon black reinforcing filler. This increases cut-and-gouge resistance, ensuring that the impact energy from 100mm falling rock is scattered through the top cover rather than punching directly through the fabric core.
Building the next generation of smart, sustainable, and hyper-durable conveying mediums.
Boao is actively designing fabric-reinforced conveyor belts with integrated copper loop arrays and RFID chips. These embedded modules communicate with line scanners to instantly detect longitudinal ripping caused by trapped metallic tramp iron, triggering an automatic shut-off to prevent catastrophic split-belt scenarios.
We are transiting our primary manufacturing lines to low-emission vulcanizing accelerators and steam-recovery curing presses. This reduces energy consumption per square meter of conveyor belt by 18%, aligning our industrial operations with global carbon neutrality mandates without sacrificing rubber cross-linking density.
By blending nano-silica structures into our cover rubber recipes, our research lab has successfully reduced rolling resistance by 12% in test runs. This innovation allows long-distance conveyor plants to reduce electrical consumption in drive motors, yielding massive operating cost reductions over the belt's life cycle.
Why sourcing from Hebei Boao Rubber Technology guarantees cost predictability and uncompromised quality.
As international markets navigate supply chain blockages, sourcing from a vertically integrated Chinese manufacturer offers unparalleled operational safety. Hebei Boao Rubber is nestled within the Boye County Rubber Industrial Park, a global industrial cluster that aggregates raw material chemical suppliers, high-tensile fabric weavers, and specialized logistics carriers.
This geographic concentration allows us to control costs and buffer inventory. We maintain a secure safety stock of premium natural rubber (SMR/STR grades) and high-strength industrial polyester yarn, shielding our global clients from volatile commodity price swings. Our internal testing infrastructure operates 24/7, validating every batch from raw elastomer inputs to post-vulcanization tensile tests. Because we run our own physical and chemical testing laboratory, we do not release any batch that fails to meet standard DIN, AS, ISO, or MSHA performance benchmarks.
Additionally, our factory is situated close to the major northern ports of Tianjin and Qingdao. This proximity allows us to load, customs-clear, and ship high-capacity containers within days of production completion, reducing lead times compared to inland manufacturers. Our transport partners guarantee safe ocean freight options to ports in Europe, North America, Southeast Asia, and Australia, ensuring our customers get their parts on-site without delay.
Proof of performance in high-stress, real-world conditions for leading industrial conglomerates.
Mixing Plant Operations
Highly Abrasive Clinker Conveying
High-Tension Deep Coal Extraction
Heavy Ore Transportation
Sinter Plant Feed Systems
Long Distance Limestone Conveyors
Flame-Retardant Coal Handling Lines
High Temperature Coke Transport
Comprehensive package of support, maintenance plans, and technical guarantees designed for industrial end-users.
Purchasing a premium conveyor belt is only the first step. Maximizing the system's operational lifetime requires correct installation, splicing, and preventative maintenance. Hebei Boao Rubber provides a full technical service blueprint to skip the hassle of sourcing from multiple suppliers:
We provide planned replacement schedules, wear-pattern diagnostics, splice integrity checks, and emergency repair response plans. Our technical teams analyze chute configurations and pulley alignments to locate friction wear before it triggers structural issues.
To support continuous operation, we manage stock buffers of raw rubber covers and vulcanizing tie-gum. This allows customers to source matching cold adhesive compounds or hot vulcanizing kits for rapid splice repairs in under 24 hours.
We work toward clear mutual targets: extending your belt's life cycle, reducing mechanical power draw, and minimizing material spillage. Our technical services ensure your plant operates with high reliability at a low cost per ton moved.
Critical technical answers for procurement officers and plant maintenance managers.
Complete your transport loop with our engineered high-inclination belts, heavy-duty bucket elevators, and specialized chemical-resistant solutions.
Boao Rubber