Conveyor Belts
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Rubbex Conveyor Beltings
We offer and extensive range of Conveyor belts and components to suit all applications and specification. We have a team of dedicated and interconnected representatives and distributors, spread across all regions around the world. Our logistics department is fully geared for LCL / FCL shipments to the remotest part of the world in the shortest possible time. Our complete range of RBX Rubber Conveyor products is aimed to meet & consolidate all your belting requirements from one source, creating a one stop solution to all your Rubber needs
Types of conveyor belts
Steel Cord Conveyor Belt, Screw Conveyor, Bucket Elevator, Textile Conveyor Belt, Chevron Conveyor Belts, Sidewall Conveyor Belts, Pipe Conveyor Belt, PU Conveyor Belts, PVC Conveyor Belts, PVG Solid Woven Conveyor Belts, Rough Top Conveyor Belts
Steel Cord Conveyor Belt
Steel Cord Conveyor Belts are high-strength, heavy-duty conveyor belts reinforced with steel wire cords as the tension-bearing member. These belts are engineered for long-distance, high-tension, and heavy-load conveying in demanding industries such as mining, ports, steel, and cement.
Key Features
- High Tensile Strength: Capable of handling extremely heavy loads over long distances.
- Low Elongation: Minimal stretching ensures consistent belt tension and tracking.
- Excellent Trough ability: Easily conforms to conveyor systems with deep trough angles.
- Impact Resistance: Designed to absorb shock and impact from sharp, large-sized materials.
- Superior Durability: Long service life even in extreme operating environments.
Construction Structure
| Layer | Description |
|---|---|
|
Top Cover Rubber |
Protects against abrasion, impact, weather, or chemical exposure (customized by application). |
|
Steel Cords |
High-tensile galvanized steel wires arranged longitudinally with rubber bonding to absorb shocks and vibrations. |
|
Skim Coating |
Rubber compound between cords for adhesion and flex fatigue resistance. |
|
Bottom Cover Rubber |
Offers protection and stability from the return path wear. |
Technical Specifications
| Parameter | Range / Value |
|---|---|
|
Tensile Strength |
630 N/mm to 10,000+ N/mm |
|
Elongation at Break |
<0.25% |
|
Cord Diameter |
2.5 mm – 12 mm (depending on rating) |
|
Width Available |
Up to 3200 mm or more |
|
Carcass Material |
Galvanized steel cords |
|
Cover Grades |
GP, HR, FR, OR, SAR, SHR, UHR (as needed) |
Cover Grade Options
- HR – Heat Resistant
- FR – Flame Retardant
- SAR – Superior Abrasion Resistant
- OR – Oil Resistant
- UHR – Ultra Heat Resistant
- Anti-Tear / Rip-Stop Reinforced
Applications
- Mining (coal, iron ore, copper, limestone)
- Thermal power plants
- Steel manufacturing units
- Cement plants
- Ports & bulk terminals
- Long-distance overland conveyor systems
Advantages Over Fabric Belts
- Much higher strength-to-weight ratio
- Longer conveyor runs without intermediate drives
- Better performance in tough environments
- Reduced maintenance and downtime
- Compatible with monitoring systems (e.g., cord scanning for internal damage)
Optional Add-ons
- Rip detection systems
- Fire-resistant compounds
- Sensor-embedded smart belts
- Special compound for cold-resistant or chemical handling
Screw Conveyor Belts
A Screw Conveyor is a mechanical conveying system used to move bulk materials in a horizontal, inclined, or vertical direction. It consists of a rotating screw (auger) housed inside a tubular or U-shaped trough, and is ideal for handling free-flowing, semi-solid, granular, or powdery materials.
Key Features
- Simple and compact design
- Efficient for enclosed dust-free conveying
- Capable of mixing, heating, or cooling materials during transfer
- Customizable screw diameter, pitch, and length
Construction Structure
| Component | Description |
|---|---|
|
Screw (Helix or Flighting) |
The main rotating shaft with helical blades that moves the material forward. |
|
Trough or Casing |
The housing that contains the screw; can be U-shaped or tubular. |
|
Inlet & Outlet |
Where material enters and exits the conveyor system. |
|
Drive System |
Motor and gearbox assembly to rotate the screw. |
|
Hanger Bearings |
Support long screws and prevent sagging or vibration. |
|
End Bearing |
Supports the screw shaft at both ends for smooth rotation. |
Types of Screw Conveyors
| Parameter | Range / Value | Application |
|---|---|---|
|
Horizontal Screw Conveyor |
Most common; for level conveying |
Grains, powder, pellets |
|
Inclined Screw Conveyor |
For elevating materials |
Feed mills, food industry |
|
Vertical Screw Conveyor |
Moves materials upward vertically |
Limited space, silos |
|
Shaftless Screw Conveyor |
No central shaft, handles sticky or fibrous materials |
Sludge, waste, pulp |
|
Tubular Screw Conveyor |
Fully enclosed circular housing |
Clean or hygienic conveying |
|
Twin Screw Conveyor |
Two parallel screws; used for mixing or high volume |
Chemicals, food mixing |
Materials Handled
- Flour, sugar, salt
- Sand, cement, lime
- Sludge, biomass
- Plastic pellets
- Chemicals, fertilizers
- Grains and animal feed
Materials of Construction
- Mild Steel – General industrial use
- Stainless Steel – Food, pharmaceutical, chemical applications
- Hardened Steel – Abrasive materials
Advantages
- Dust-tight and safe for hazardous materials
- Low maintenance and energy-efficient
- Can convey, mix, and heat/cool simultaneously
- Easily adaptable to confined spaces
- Can be vertical, inclined, or horizontal
Limitations
- Not ideal for fragile materials (may break them)
- Limited in conveying very long distances
- Wear and tear for abrasive materials
Bucket Elevator
A Bucket Elevator is a vertical conveying system designed to lift bulk materials efficiently from a lower to a higher level using a series of buckets attached to a belt or chain. It is widely used in industries like agriculture, cement, mining, food processing, and chemicals.
Key Components
| Component | Description |
|---|---|
|
Buckets |
Scoop-shaped containers used to hold and lift material. Made from steel, plastic, or stainless steel. |
|
Elevator Belt/Chain |
The moving medium to which buckets are attached. Can be textile-reinforced rubber belt or forged chain. |
|
Head Section |
Top part with drive pulley/sprocket and discharge chute. |
|
Boot Section |
Bottom part containing the material inlet and return pulley/sprocket. |
|
Casing/Enclosure |
Protects moving parts and prevents spillage or dust escape. |
|
Inlet Hopper |
Entry point for bulk material into the elevator. |
|
Drive Assembly |
Includes motor, gearbox, and pulleys for movement. |
Types of Screw Conveyors
| Parameter | Range / Value | Suitable for |
|---|---|---|
|
Centrifugal Discharge Elevator |
Buckets spaced apart; materials discharged by centrifugal force at high speed. |
Fine, free-flowing, and dry materials (e.g., grains, sand, cement) |
|
Continuous Discharge Elevator |
Buckets closely spaced; material slides gently from bucket to bucket. |
Fragile or sticky materials (e.g., food, chemicals) |
|
Positive Discharge Elevator |
Used for materials that tend to stick to the bucket. Buckets are inverted at the top. |
Lumpy, damp, or adhesive materials |
|
Belt-Type Bucket Elevator |
Uses a rubber or textile belt to move buckets. Cost-effective and lightweight. |
Sludge, waste, pulp |
|
Tubular Screw Conveyor |
Fully enclosed circular housing |
Light to medium-duty applications |
|
Chain-Type Bucket Elevator |
Uses a chain to support heavy buckets. Offers higher strength and temperature resistance. |
Heavy-duty or high-temperature environments |
Materials Handled
- Cement, clinker
- Limestone
- Coal and coke
- Grain, wheat, rice
- Sugar, salt
- Fly ash
- Fertilizers
- Chemicals and plastic pellets
Advantages
- Vertical material transport with a small footprint
- High lifting height (up to 60 meters or more)
- Low energy consumption
- Dust-tight and clean operation
- Customizable discharge and inlet points
Optional Features
- Explosion-proof casing (ATEX compliant)
- Wear-resistant liners
- Backstop or anti-runback device
- Belt misalignment detectors
- Automatic tensioning devices
Textile Conveyor Belts
A Textile Conveyor Belt is a type of conveyor belt that uses woven fabric materials (such as polyester, nylon, or cotton) as the carcass or tension member, covered by rubber layers on both sides. It is one of the most widely used belts in industries due to its flexibility, cost-effectiveness, and mechanical strength.
Construction Structure
| Layer | Description |
|---|---|
|
Top Cover Rubber |
Protects against material wear, heat, oil, or chemical attack (customized per application) |
|
Carcass Fabric Layer |
Made from EP (Polyester/Nylon), NN (Nylon/Nylon), or Cotton fabric; provides strength and flexibility |
|
Bottom Cover Rubber |
Offers protection on the return side of the belt and maintains structure |
|
Skim Rubber |
Binds the fabric plies and enhances durability and impact resistance |
Types of Textile Conveyor Belts (by Fabric)
| Type | Fabric Composition | Features | Applications |
|---|---|---|---|
|
EP Belt |
Polyester (warp) / Nylon (weft) |
Low elongation, high strength, moisture-resistant |
Cement, mining, construction |
|
NN Belt |
Nylon / Nylon |
High flexibility, impact and shock resistance |
Mining, heavy loads, long conveyors |
|
EE Belt |
Polyester / Polyester |
Dimensional stability, good trough ability |
Light to medium duty |
|
CC Belt |
Cotton / Cotton |
Environmentally friendly, low strength |
Agriculture, packaging |
|
Custom Fabric |
Blended or hybrid fabrics |
Special resistance or mechanical properties |
Specialized uses |
Main Rubber Cover Grades
- GP – General Purpose
Standard rubber suitable for general conveying applications with no extreme conditions.
Applications: Coal, cement, sand, aggregates. - OR – Oil Resistant
Special rubber formulation that resists swelling and breakdown due to contact with oil.
Applications: Fertilizer, oil-treated grains, chemicals, wood chips. - HR – Heat Resistant
Can withstand moderate heat (up to 100°C to 150°C).
Applications: Hot clinker, foundry sand, sintered ore. - UHR – Ultra Heat Resistant
Withstands very high temperatures (up to 180°C or more).
Applications: Steel plants, high-temperature coke, sintering units. - FR – Flame Retardant (Fire Resistant)
Designed to resist ignition and self-extinguish quickly.
Applications: Underground mining, power plants, tunnels. - SHR – Super Heat Resistant
Improved heat resistance, usually between HR and UHR.
Applications: Cement, steel plants, hot sinter. - SAR – Superior Abrasion Resistant
High wear resistance rubber, longer life in handling sharp, abrasive materials.
Applications: Quarrying, mining, stone, ore handling.
Extended Conveyor Belt Cover Grades
- GR – Grease Resistant
Resists damage from grease and fats.
Applications: Food industry, meat & poultry plants. - CR – Chemical Resistant
Withstands exposure to acidic or alkaline materials.
Applications: Chemical plants, fertilizer units. - WR – Water Resistant
Does not degrade or weaken in presence of water/moisture.
Applications: Paper mills, sugar industry. - AR – Acid Resistant
Specifically resistant to acidic materials and vapors.
Applications: Battery manufacturing, chemical handling. - MR – Moisture Resistant
Prevents absorption of humidity/moisture.
Applications: Grain silos, agriculture. - PR – Product Resistant
Special cover that protects both the product and the belt surface.
Applications: Food packaging, hygiene-critical handling. - TR – Tear Resistant
Designed to prevent tearing under high impact or puncture loads.
Applications: Recycling, glass, wood handling. - CSR – Cut and Scratch Resistant
Reinforced surface to resist sharp and abrasive materials.
Applications: Stone, glass, iron ore, scrap metal. - NVR – Non-Vulcanized Rubber
Made from rubber not requiring vulcanization (often used in repairs or temporary belts).
Applications: Maintenance, repairs. - EC – Energy Saving Cover
Low rolling resistance cover to reduce energy consumption.
Applications: Long-distance or high-speed conveying. - ABR – Anti-Bacterial Resistant
Inhibits bacterial growth on belt surface.
Applications: Pharmaceuticals, food processing. - LHR – Low Heat Resistant
For slightly warm materials (up to 80–100°C).
Applications: Warm sand, packaging units. - OHR – Ozone and Heat Resistant
Withstands UV, ozone cracking, and moderate heat.
Applications: Outdoor conveyors, power plants. - UVR – UV Resistant
Resists damage from prolonged exposure to sunlight.
Applications: Outdoor installations, ports.
Key Features
- Flexible and easy to install
- High tensile strength with lightweight structure
- Suitable for medium to long-distance material handling
- Available in multiple fabric plies (2–6 ply or more)
- Heat, abrasion, flame, oil, and chemical-resistant covers available
Applications
- Mining (coal, iron ore, limestone)
- Cement and construction industries
- Power plants and thermal units
- Agriculture (grain, fertilizer, sugar)
- Steel and metallurgy
- Chemical and fertilizer plants
- Food processing (with food-grade covers)
Advantages
- Easy to splice and repair
- Economical compared to steel cord belts
- Customizable in terms of ply, cover thickness, and resistance properties
- Long-lasting with proper maintenance
- Wide range of widths and cover combinations
Chevron Conveyor Belts
Chevron Conveyor Belts are specially designed belts with cleats (raised patterns) molded into the top surface. These belts are used for carrying loose, bulk, or bagged materials at inclined angles (typically 15° to 45°), where flat belts would slip or lose load.
Construction Structure
| Layer | Description |
|---|---|
|
Top Cover Rubber |
Includes molded chevron cleats for grip; abrasion-resistant |
|
Carcass (Fabric Layer) |
Reinforced EP/NN fabric for strength and flexibility |
|
Bottom Cover Rubber |
Provides stability and return-side protection |
|
Cleat Profile |
Integrated into the top cover (not glued), shaped like “V”, “U”, “Y”, etc. |
Types of Chevron Conveyor Belts
- Open V Profile – Most common chevron; open-ended V shape.
Use: General bulk material handling. - Closed V Profile – V-shape without open ends; offers more material retention.
Use: Finer materials, less fallback. - U Profile – U-shaped cleat with rounded edges.
Use: Fragile or rolling materials. - Y Profile – Sharp narrow V pattern.
Use: High-angle conveying. - Multi-V Profile – Series of smaller V patterns.
Use: Light or packaged items. - C Profile – Curve-tipped V cleat.
Use: Sticky or wet materials. - Double Y Profile – Twin chevron design for better grip.
Use: Steep incline with slippery materials. - Sawtooth Profile – Serrated cleats.
Use: Rough or irregular materials. - Straight Profile – Parallel cleats instead of V shape.
Use: Materials needing consistent flow. - Herringbone Profile – Zig-zag pattern similar to fishbone.
Use: Agricultural and moist material handling. - Arrowhead Profile – Pointed V or arrow design.
Use: Sharp flow control, fine material. - Z Profile – Zig-zag angular cleats.
Use: Materials requiring agitation or mixing.
Cleat Heights Available
- 5 mm to 32 mm (varies by manufacturer and application)
- Customized cleat height and pitch available
Applications
- Mining and quarrying (sand, gravel, ore)
- Cement plants (clinker, limestone)
- Fertilizer handling
- Agriculture (grains, sugarcane, compost)
- Coal and power plants
- Road construction and asphalt plants
Advantages
- Prevents rollback of material on inclines
- Increases conveying capacity per meter
- Saves space by allowing steep conveying
- Reduces material loss and cleanup
- Works in both dry and moist environments
Selection Considerations
- Incline angle of conveyor
- Type of material (grainy, sticky, abrasive)
- Cleat height and pitch needed
- Cover grade requirements (heat, oil, fire, etc.)
Sidewall Conveyor Belts
Sidewall Conveyor Belts are specially designed belts with corrugated sidewalls and often cross cleats, used for steep-angle or vertical conveying of materials. These belts are perfect for maximizing space and elevating material vertically without spillage or rollback.
They are commonly used where conventional belts cannot handle steep inclines and are ideal for bulk material transport in limited spaces.
Key Components
A Chevron conveyor belt is built from several essential parts that work together to ensure efficient material transport. The base belt serves as the foundation, typically made from durable EP fabric or steel cord construction, providing strength, flexibility, and long service life. Sidewalls are corrugated rubber barriers fixed along the edges of the belt to prevent material from spilling over the sides, allowing for the safe conveyance of bulk materials at steep angles. Cleats are transverse barriers attached to the belt surface, designed to hold material securely in place and push it forward during movement, enabling reliable vertical or steep-incline conveying without product rollback.
Key Features
- Conveys at angles up to 90° (vertical)
- Prevents material spillage
- Optimizes space in compact layouts
- Increases throughput with continuous flow
- Customizable height & spacing of cleats and sidewalls
- Works with horizontal-to-vertical transition points
Technical Specifications
- Belt Width – 300 mm to 1800+ mm
- Sidewall Height – 40 mm to 300 mm
- Cleat Height – 25 mm to 280 mm (dependent on belt width & angle)
- Cleat Types – T-type, C-type, TC-type
- Belt Construction – EP fabric or steel cord
- Top Cover Grade – M24, HR, FR, OR, SHR, UHR, SAR
- Temperature Range – -25°C to +200°C (depending on rubber grade)
Types of Cleats
T – Straight Cleat – Suitable for light to medium-duty materials.
C – Curved Cleat – Designed for smooth flow of sticky materials.
TC – Combination Shape – Ideal for high-capacity, heavy-duty applications.
Applications
Chevron conveyor belts are widely used across multiple industries due to their ability to transport materials efficiently on steep inclines. They are essential in mining and minerals operations for conveying coal, ore, and bauxite. In cement and aggregate plants, they move raw materials and finished products with ease. Power plants utilize them for handling fly ash and clinker, while fertilizer and chemical plants benefit from their chemical-resistant options. Steel plants use them for hot sinter and other heavy-duty materials. In agriculture, they transport grains and seeds effectively, and in food processing applications, specially designed food-grade versions ensure hygiene and safety.
Advantages
Chevron conveyor belts offer several operational benefits. Their vertical conveying capability saves valuable floor space, allowing for efficient plant layouts. They can handle a wide range of materials, whether fine, granular, or lumpy. Designed for low maintenance and high reliability, they ensure minimal downtime. The belts provide dust-free and clean conveying, improving workplace safety and hygiene, and by reducing the need for multiple transfer points, they also minimize spillage and wear on the system.
Optional Grades
To meet different operational needs, chevron conveyor belts can be manufactured in specialized grades. Flame Retardant (FR) versions enhance safety in underground and fire-prone environments. Oil Resistant (OR) grades withstand contact with oils and greases, while Heat Resistant (HR/UHR) belts are designed for moderate to extremely high temperatures. Super Abrasion Resistant (SAR) options extend belt life in handling sharp and abrasive materials. For industries requiring hygienic material handling, Food Grade belts, made from white rubber or PU-based materials, are available.
Pipe Conveyor Belts
A Pipe Conveyor Belt is a special type of belt used in a pipe conveyor system, where the belt forms a closed tubular shape (like a pipe) during conveying. This system is designed for environmentally sensitive, curved, and complex routes, offering dust-free and spill-free transport of materials.
Key Features
- The belt forms a closed pipe shape using idler rollers
- Fully enclosed material transport — no spillage, no dust
- Can navigate sharp curves (horizontal and vertical)
- Ideal for long-distance, environmentally controlled, and complex terrain routes
- Can carry light to medium-heavy bulk materials
Construction Structure
Top & Bottom Covers – High-quality rubber to protect against wear, heat, oil, or chemicals.
Carcass – EP (Polyester/Nylon) or steel cord reinforcement for high tensile strength.
Skim Layers – Ensure adhesion between plies and resist fatigue.
Edge Reinforcement – Specially designed edges to withstand stress when forming into a pipe.
Working Principle
- Loading Zone (Flat Form): The belt remains flat while receiving material.
- Pipe Formation Zone: Through a series of idlers, the belt gradually forms a pipe shape and encloses the material.
- Conveying Zone: The belt maintains the pipe shape, preventing leakage or contamination.
- Discharge Zone: The belt is opened again to flat form and the material is discharged.
Advantages
- Environmentally friendly (dust, noise, and spillage control)
- Minimal space requirement due to compact routing
- Can handle steep inclines and tight curves
- Protects sensitive materials from external contamination
- Lower structural cost compared to galleries and enclosed conveyors
There are 3 main construction types (EP, NN, Steel Cord), and over 8+ functional types based on rubber grade and environment, bringing the total variations to 20+ combinations, depending on your industry and use case.
PU Conveyor Belts
PU (Polyurethane Belts) Conveyor Belts are high-performance belts made with a thermoplastic polyurethane cover. They are widely used in food processing, packaging, pharmaceuticals, and hygiene-critical applications due to their excellent wear resistance, flexibility, and food safety compliance.
Key Features
- Highly hygienic & easy to clean
- FDA / EU compliant for food contact
- Resistant to oil, grease, water, and chemicals
- Tear- and abrasion-resistant even in thin profiles
- Non-toxic, odorless, anti-microbial options available
- Excellent dimensional stability & flexibility
Construction Structure
Single-Ply PU Belt – Thin, lightweight, with one layer.
Typical Use: Small conveyors, bakery lines.Double-Ply PU Belt – Greater strength with two fabric layers.
Typical Use: Meat, fish, poultry, pharmaceutical industry.Textured/Embossed PU Belt – Surface with grip textures such as diamond or matt finish.
Typical Use: Inclined transport, handling delicate items.Antistatic PU Belt – Prevents static build-up.
Typical Use: Electronics manufacturing, cleanrooms.Flame-Retardant PU Belt – Resists ignition and slows flame spread.
Typical Use: Airport logistics, packaging lines.High-Temperature PU Belt – Withstands higher temperatures (100–120°C).
Typical Use: Hot bakery trays, warm packaging.PU Timing Belt Coated – Timing belt base with PU conveyor top layer.
Typical Use: Synchronized conveying applications.
Applications
- Food Processing: Meat, dairy, bakery, fruits, vegetables
- Pharmaceuticals: Tablets, packaging lines
- Packaging Industry: Pouches, cartons, sachets
- Logistics & Sorting Systems
- Textile and Paper Industries
Applications
Food Safe – PU: Yes (better than PVC) | PVC: Yes, but PU is preferred.
Heat Resistance – PU: Up to 120°C | PVC: Up to 80°C.
Flexibility – PU: High | PVC: Medium.
Life Span – PU: Longer | PVC: Shorter.
Surface Hardness – PU: Higher (more cut-resistant) | PVC: Softer.
Available in
- Widths: 100 mm to 3000+ mm
- Thicknesses: 0.8 mm to 15+ mm
- Colors: White (food grade), Blue (hygienic), Green, Black
PVC Conveyor Belts
PVC Conveyor Belts (Polyvinyl Chloride Belts)are among the most widely used belts for general-purpose light- to medium-duty conveying applications. Known for their versatility, low cost, and good mechanical properties, they are ideal for use in industries like packaging, logistics, food (dry), textiles, electronics, and agriculture
Key Features
- Economical and durable
- Smooth or textured surface options
- Anti-static, flame-retardant, and oil-resistant grades available
- Customizable cleats, guides, and sidewalls
- Available in multiple plies and surface coatings
- Easy to install and maintain
Types of PVC Conveyor Belts
Plain PVC Belt (Smooth) – Smooth glossy or matt surface.
Typical Use: Packaging, labeling, sorting.Embossed / Rough Top Belt – Textured for better grip (diamond, matt, or rough top).
Typical Use: Inclines, dry food handling, box transport.Green PVC Conveyor Belt – Standard industrial-use color.
Typical Use: Textile, logistics, recycling.White PVC Conveyor Belt – Food-grade for non-oily foods.
Typical Use: Bakery, snacks, fruits, vegetables.Anti-static PVC Belt – Prevents static build-up.
Typical Use: Electronics manufacturing, PCB transport, assembly lines.Flame-retardant PVC Belt – Meets fire safety standards.
Typical Use: Airports, logistics, underground conveying.Oil- and Grease-resistant Belt – Suitable for greasy or oily surfaces.
Typical Use: Dry food packaging, light oil handling.High Grip Belt (Super Grip) – Deep embossed surface for maximum friction.
Typical Use: Inclined packaging lines.Profiled PVC Belt – Equipped with cleats, sidewalls, or guide profiles.
Typical Use: Inclined or vertical conveying.
Working Principle
- Food Industry (dry foods): Biscuits, pasta, vegetables
- Packaging and Logistics: Cartons, boxes, bags
- Textiles: Yarn transport, garment factories
- Electronics: PCB assembly lines
- Airports: Baggage handling systems
- Automotive & Plastics: Parts transport
- Agriculture: Fertilizer and produce handling
PVG Solid Woven Conveyor Belts
PVG Solid Woven Conveyor Belts are made with a solid woven fabric carcass, impregnated with PVC (Polyvinyl Chloride) and then coated with Nitrile Rubber (NBR) on the top and bottom covers. This construction gives them excellent flame resistance, moisture resistance, impact resistance, and flexibility, making them ideal for underground and damp material handling environments.
Construction & Structure
| Layer | Coating | Description |
|---|---|---|
|
Top Cover Rubber |
Nitrile Rubber (NBR) |
Flame, abrasion, and chemical resistance |
|
Carcass |
Solid Woven Polyester/Nylon Fabric |
High tensile strength, tear resistance |
|
Bottom Cover Rubber |
Nitrile Rubber (NBR) or PVC blend |
Moisture resistance, friction control |
|
Coating |
PVC Impregnation |
Binds the fabric plies and enhances durability and impact resistance |
Key Features & Benefits
- Fire-Resistant (tested to ISO 340 / IS 3181 standards)
- Moisture-Resistant – suitable for damp conditions and underground use
- Impact and Abrasion Resistance – excellent toughness and wear properties
- Anti-static – meets safety norms for electrical resistance
- Flexible – easy to install and handle even in tight spaces
- Economical – long service life, low maintenance
- Layered Strength – solid woven core resists delamination
Applications
- Underground Coal Mining
- Underground Metal Mining
- Tunnel Projects
- Power Plants (coal handling)
- Cement and Limestone Handling
- Damp or Moist Environments
- Bulk Material Handling in enclosed systems
Comparison: PVG vs PVC Solid Woven Belts
| Feature | PC Belts | PVG Belts |
|---|---|---|
|
Top Cover Material |
PVC only |
Nitrile Rubber + PVC |
|
Flame Resistance |
Yes |
Superior |
|
Moisture Resistance |
Excellent |
Excellent |
|
Abrasion Resistance |
Good |
Better |
|
Flexibility |
High |
Slightly less than PVC |
|
Application |
Inclines ≤16° |
Inclines up to 20°–25° |
|
Cost |
Lower |
Slightly higher |
Why Choose PVG Solid Woven Belts?
“Screen Smarter. Screen Stronger.”
PVG belts offer balanced performance, rugged durability, and safety compliance, especially in underground and hazardous conditions, making them a go-to solution for reliable material transportation.
Rough Top Conveyor Belts
Rough Top Conveyor Belts are specialized belts designed with a textured (rough or grip-top) surface that provides superior grip and reduced slippage, especially for transporting packages, boxes, or lightweight goods on inclined surfaces.
They are ideal for applications requiring firm gripping of materials without damaging them—particularly useful in packaging, logistics, and light industrial processes.
Key Features
- Rubber or PVC rough-patterned surface for better grip
- Reduces slipping on inclined or declined conveyors
- Gentle on delicate packages (no scratching or crushing)
- Shock-absorbing and vibration-dampening properties
- Anti-static and flame-retardant versions available
- Quiet, smooth running even at higher speeds
Construction Structure
| Layer | Material |
|---|---|
|
Top Surface |
Rough textured rubber (or PVC/PU) |
|
Tensile Layer |
EP fabric (Polyester-Nylon) or Cotton-Nylon base |
|
Bottom Layer |
Fabric or low-friction sliding surface |
Available Surface Patterns
| Pattern Type | Purpose |
|---|---|
|
Standard Rough Top |
General inclined conveying |
|
Diamond Profile |
Extra grip on sharper inclines |
|
Soft-Rough Top |
For delicate, scratch-sensitive products |
|
Hard-Rough Top |
Durable for carton boxes, metal parts |
Applications
- Logistics and Courier Services
- Airport baggage handling
- Parcel sorting and warehouse automation
- Packaging units (food, pharma, FMCG)
- Inclined carton box handling
- Textile mills and fabric transport
- FMCG and light assembly lines
Advantages
- Provides firm grip on slopes
- Prevents product shifting or rolling
- Gentle enough for delicate goods
- Low maintenance and quiet operation
- Custom cleats or sidewalls optional for steeper inclines
Optional Variants
- Flame-retardant for safety zones
- Food-grade rough top for dry food packaging
- Anti-static rough top for electronics and textile use
- Color options: Green, Black, White, Blue
Coal Feeders
A coal feeder is a mechanical device used in thermal power plants, cement industries, and other bulk handling applications to control and regulate the flow of coal from storage (like a bunker or silo) to the pulverizer, boiler, or processing unit. It ensures a consistent, controlled, and safe feeding rate based on process requirements.
Function of Coal Feeders
Coal feeders play a critical role in ensuring smooth and efficient fuel supply to boilers and other coal-fired systems. Their primary function is coal flow regulation, controlling the mass or volume of coal delivered per unit time to match process requirements. They provide an accurate feed rate, which helps maintain steady combustion in boilers, resulting in consistent energy output and stable system operation. By managing the coal supply, feeders also avoid spillage, preventing overfeeding, underfeeding, or choking of downstream equipment. This careful control directly improves efficiency, as the feed rate is matched to process demand, optimizing energy utilization. Furthermore, modern coal feeders support automation by integrating seamlessly into control systems such as SCADA or DCS, enabling load-dependent feeding and reducing the need for manual intervention.
Types of Coal Feeders
Gravimetric Coal Feeder – Measures weight-based coal flow using load cells and belt scales.
Application: Power plants (precise control).Volumetric Coal Feeder – Measures volume-based flow using screw or rotary feeding mechanisms.
Application: Medium control applications.Rotary Feeder – Uses rotating vanes to meter coal flow.
Application: Controlled feeding from hoppers.Belt Feeder – Uses a conveyor belt to regulate coal discharge.
Application: Continuous feeding applications.Screw Feeder – Uses a helical screw shaft to push coal forward.
Application: Compact, enclosed feeding systems.Vibratory Feeder – Uses vibration to move and control the flow of coal.
Application: Gentle handling of fragile coal.Table Feeder / Paddle Feeder – Rotating arms push coal to a conveyor or processing unit.
Application: Large-scale stockyard systems
Gravimetric vs Volumetric Feeders
Measurement Type – Gravimetric Feeder: Weight-based | Volumetric Feeder: Volume-based.
Accuracy – Gravimetric Feeder: Very high | Volumetric Feeder: Moderate.
Automation – Gravimetric Feeder: Advanced, real-time control | Volumetric Feeder: Basic to moderate.
Use Case – Gravimetric Feeder: Power plants, critical combustion control | Volumetric Feeder: General feeding, less critical loads.
Components of a Coal Feeder
A coal feeder consists of several key components that work together to ensure efficient and controlled coal delivery. The hopper or bunker stores coal before it enters the feeding system. The feeding mechanism, which can be a belt, screw, paddle, or rotary valve, regulates coal movement from the hopper to the next stage. A drive system, typically a motor paired with a gearbox or variable frequency drive (VFD), controls the feeder’s speed. In gravimetric feeders, a weighing system—such as load cells or belt scales—measures the coal flow by weight. Sensors are installed to monitor parameters like coal flow, speed, belt alignment, and potential overloading. Finally, a controller, usually a PLC or DCS-based system, manages and coordinates all operations for precise feed control.
Construction Materials
Coal feeders are built using robust materials to withstand demanding operating conditions. The casing is typically made from mild steel for standard applications, while stainless steel is used in corrosive environments to prevent rust and degradation. Feeding elements, such as belts, screws, or paddles, are often constructed from hardened steel or lined with wear-resistant rubber or ceramic to minimize abrasion and extend service life. The drive components are fully enclosed to protect them from coal dust contamination, ensuring reliable performance and reducing maintenance needs.
Industries Using Coal Feeders
Coal feeders are widely used across multiple industries where controlled coal supply is critical for process efficiency. In thermal power plants, they feed boilers and pulverizers to ensure steady combustion and power generation. The cement industry uses them for precise kiln feeding, maintaining consistent clinker production. Steel plants rely on coal feeders for blast furnace operations, where stable fuel delivery is essential for smelting. In chemical plants, they play a key role in coal gasification processes, supplying the exact amount of coal needed for chemical reactions. Additionally, biomass and waste-to-energy units utilize coal feeders for co-firing or fuel blending, enhancing energy recovery efficiency.
Benefits of Using Coal Feeders
Consistent feed rate – Prevents fuel fluctuations in combustion systems.
High efficiency – Matches fuel consumption with energy demand.
Dust control – Closed systems prevent coal dust dispersion.
Long equipment life – Reduces load shocks and blockages.
Automation ready – Integrates with plant DCS, SCADA, or PLC systems.
A coal feeder is designed to feed and regulate the flow of coal to downstream processes with precision. The main types include gravimetric, volumetric, rotary, belt, and screw feeders, each suited for specific material handling needs. Capacities typically range from 1 to 300 TPH, making them suitable for both small and large-scale operations. Control can be manual or fully automatic through PLC/DCS systems, ensuring adaptability to plant requirements. They are commonly used in power boilers, kilns, and furnaces, where steady and controlled fuel supply is critical for efficient operation.
