INDUSTRY COMPONENT

Carcass

The carcass is the load-bearing structural layer of an industrial conveyor belt, providing tensile strength and dimensional stability.

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Component Specifications

Definition
The carcass is the foundational, multi-layered internal structure of a conveyor belt, responsible for bearing the entire tensile load during operation. It consists of one or more plies of fabric (typically polyester, nylon, or aramid) or steel cords embedded in a rubber matrix. This core layer determines the belt's longitudinal strength, flexibility, impact resistance, and troughability, forming the essential framework upon which the top and bottom covers are applied.
Working Principle
The carcass functions by distributing tensile forces evenly across its width and length. When the conveyor drive pulley applies force, the tension is transmitted through the carcass, pulling the belt and its load. Its layered or corded construction provides high strength-to-weight ratio, allowing it to withstand operational stresses like starting tension, load impact, and flexing over idlers without permanent deformation or failure.
Materials
Primary materials include polyester (EP) fabric for general use, nylon (NN) fabric for high impact resistance, aramid fibers for extreme strength and heat resistance, or steel cords for heavy-duty, long-distance applications. These are impregnated and bonded with rubber compounds (typically natural rubber, SBR, or neoprene) to form a cohesive, flexible ply.
Technical Parameters
  • Ply Rating 2-8 plies
  • Rip Resistance N/mm
  • Tensile Strength 200-6000 N/mm
  • Impact Resistance Measured in joules (J)
  • Elongation at Break 10-25%
  • Minimum Pulley Diameter 400-2000 mm
Standards
ISO 15236, ISO 283, DIN 22102

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Carcass.

conveyor belt carcass belt ply tensile strength EP fabric steel cord belt carcass construction DIN 22102 ISO 15236 conveyor belt structure Carcass Carcass in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Industrial Conveyor Belt

A continuous loop of material used to transport goods in industrial settings.

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Heat-resistant Conveyor Belt

A specialized conveyor belt designed to withstand high temperatures while transporting hot materials.

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Engineering Analysis

Risks & Mitigation
  • Ply separation (delamination)
  • Carcass rupture from over-tensioning
  • Edge damage leading to longitudinal tearing
  • Moisture ingress causing fabric rot (in fabric carcasses)
  • Corrosion of steel cords (in steel cord carcasses)
FMEA Triads
Trigger: Exceeding maximum recommended tension
Failure: Carcass rupture or permanent elongation
Mitigation: Install tension monitoring devices and ensure proper belt selection based on calculated working tension.
Trigger: Impact from sharp or heavy falling objects
Failure: Localized carcass damage, leading to ply separation or tearing
Mitigation: Use impact beds at loading zones and select belts with high impact-resistant carcass materials (e.g., nylon).
Trigger: Misalignment or material buildup
Failure: Edge wear and eventual longitudinal tearing of the carcass
Mitigation: Implement belt tracking systems, use crowned pulleys, and perform regular cleaning and alignment checks.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Ply alignment tolerance within ±5 mm over belt width; thickness variation within ±0.5 mm per ply as per ISO 283.
Test Method
Tensile strength tested per ISO 283 (fabric) or ISO 7623 (steel cords); adhesion between plies tested per ISO 252; full belt testing per DIN 22102 for fire resistance and mechanical properties.

Buyer Feedback

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Frequently Asked Questions

What is the difference between fabric carcass and steel cord carcass?

Fabric carcass uses multiple plies of synthetic fabric (e.g., polyester/nylon) for flexibility and general-duty use. Steel cord carcass uses parallel steel cables for superior tensile strength, minimal elongation, and long-distance, heavy-load applications like mining or bulk handling.

How does carcass design affect belt selection?

Carcass design (material, ply count, strength) determines the belt's load capacity, pulley diameter requirements, troughability, and resistance to impact/tear. It must be matched to conveyor tension, load weight, and operational environment to ensure durability and safety.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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