Types and Applications of Chains for En-Masse Conveyors

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Types and Applications of Chains for En-Masse Conveyors

The chain of the En-masse conveyor is the core transmission and load-bearing component. The choice of chain type directly affects the conveying efficiency, service life, and applicable working conditions of the equipment. Below is a detailed introduction to the common chain types in the industry, focusing on the practicality in bulk material conveying scenarios and the technical points of concern to international customers.

I. Classification by Structural Form

1. Bushed Roller Chain

Structural Features: Composed of inner link plates, outer link plates, bushings, rollers, and pins. The rollers can rotate freely around the bushings, reducing friction with the guide rails/scraper.

Core Advantages:

  • Universal Compatibility: Suitable for medium-low load and medium-speed conveying scenarios(conveying speed≤1.2m/s).
  • Easy Replacement and Low Maintenance Cost: Easy to procure and replace.
  • Good Wear Resistance: Suitable for non-corrosive, medium-hard bulk materials(such as coal, grains, sand and gravel).

Application Scenarios: General-purpose En-masse conveyors, especially suitable for conventional bulk material conveying in the chemical, grain, and building materials industries. It is the most commonly used basic chain type in the international market.

2. Plate Chain

Structural Features: Made of multiple layers of link plates stacked together and connected by pins, without rollers. The link plates directly contact the guide rails, providing a wide load-bearing surface.

Core Advantages: 

  • High Load-Bearing Capacity: Up to 30%-50%higher than the same specification bushed roller chain, suitable for heavy-load conveying(material density>2.0t/m³).
  • Simple Structure and Low Failure Rate: Can operate stably in high-temperature(≤250℃)or dusty harsh environments.
  • High Tensile Strength: Resistant to deformation, suitable for long-distance conveying(conveying length>30m).

Application Scenarios: Heavy-load and long-distance En-masse conveyors, such as conveying ores and slag in the mining and metallurgy industries. It is the preferred choice for industrial-grade applications.

3. Scraper Chain

Structural Features: The scraper is integrated with the chain(either welded or bolted to the chain link), with the scraper usually made of wear-resistant steel(such as Mn13). The chain links are connected by high-strength pins.

Core Advantages: 

  • High Conveying Efficiency: The scraper moves synchronously with the chain, with no material retention.
  • High Scraper Wear Resistance: The scraper material can be customized according to the material characteristics(such as viscosity and corrosiveness), such as stainless steel or high-molecular wear-resistant materials.
  • Suitable for Inclined or Vertical Conveying: The conveying angle can reach up to 90°, with a material lifting height of over 10m.

Application Scenarios: Conveying of viscous materials(such as sludge, coal powder, fertilizer)and high-temperature materials(such as cement clinker). It is widely used in the environmental protection, chemical, and building materials industries and is a specialized chain type.

4. Double-Pitch Roller Chain

Structural Features: The chain pitch is twice that of the standard roller chain, with the same roller diameter as the standard chain. The chain is lighter in weight and has lower running resistance.

Core Advantages: 

  • High Conveying Speed: Suitable for light-load, high-flow bulk material conveying(speed≤1.5m/s).
  • Smooth Operation and Low Noise: Energy-saving effect is significant.
  • Easy Installation and Maintenance: Suitable for medium-length conveying(10-30m).

Application Scenarios: Rapid conveying of light bulk materials such as grains, feed, and plastic granules, commonly used in the food processing and light industry sectors. It meets the international customers'demand for high-efficiency and energy-saving equipment.

En-Masse Conveyor,Chain

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