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What is the Rubber Block Chain?

2025-08-06

Rubber block chains represent an essential component in industrial material handling systems across multiple sectors. These specialized chains consist of durable rubber blocks securely attached to high-strength steel chains, creating a conveying surface capable of withstanding extreme operating conditions. At Shukai, we've perfected the engineering of these chains to deliver reliable performance in the most demanding environments.



Engineering Specifications of Our Rubber Block Chains

The construction of our rubber block chains incorporates premium materials selected for their performance characteristics under stress. The rubber blocks utilize a proprietary compound blending natural and synthetic rubbers, reinforced with wear-resistant additives. These mount onto alloy steel chains treated through a specialized heat-tempering process that enhances durability while maintaining flexibility.


Key Construction Elements:

  • Rubber Composition: Custom-formulated NR/SBR blend with carbon fiber reinforcement

  • Chain Material: Grade 80 alloy steel with zinc-nickel plating

  • Connection System: Forged steel pins with bronze bushings

  • Attachment Method: Vulcanized bonding with mechanical fasteners


Performance Metrics:

Characteristic

Measurement Standard

Tensile Load Rating

750 kN minimum breaking strength

Abrasion Resistance

<80mm³ loss (DIN 53516 standard)

Flex Fatigue Life

>500,000 cycles at maximum load

Impact Resistance

Withstands 5J impact at -30°C

Chemical Resistance

Compatible with pH 3-11 environments


Our manufacturing process includes multiple quality verification stages, including ultrasonic testing of chain links and durometer testing of rubber hardness to ensure consistency.



Industrial Applications and Performance Advantages

Shukai rubber block chains excel in environments where conventional conveying systems fail. In mining operations, they transport iron ore and copper concentrate without degradation from abrasive materials. Cement plants utilize these chains for clinker conveyance where high temperatures would damage standard belting. The steel industry benefits from their ability to handle sharp-edged scrap metal and hot slag without sustaining cuts or deformation.


The interlocking block design creates a continuous conveying surface that prevents material leakage, even when handling fine powders or granular substances. This feature proves particularly valuable in fertilizer production and grain handling facilities where containment is critical. The chain's flexibility allows installation on inclines up to 35 degrees and around curves with radii as tight as 3 meters, enabling efficient plant layout configurations.



Common Technical Queries

1. What maintenance procedures extend service life?
Regular inspection of pin and bushing wear, along with periodic lubrication of chain joints, significantly prolongs operational life. We recommend monthly tension checks and immediate replacement of any blocks showing excessive wear (>30% thickness loss).

2. How does temperature affect performance?
Our standard formulation maintains flexibility down to -20°C, with low-temperature versions available for arctic conditions. High-temperature variants withstand continuous exposure up to 150°C without hardening or cracking.

3. What installation considerations are most important?
Proper tensioning (2-3% elongation) and alignment (±2mm tolerance) prevent premature wear. Our engineering team provides site-specific installation guidelines with each order to optimize performance.



Shanghai Shukai New Equipment Co., Ltd. delivers engineered solutions for heavy material transport challenges. Contact us to discuss how our rubber block chains can improve your operation's efficiency and reliability.


Elevator Rubber Block Chain

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