Heavy-Duty Coal & Ash Handling ConveyorsPE

Design to Installation

CDM En-Masse Drag Chain Conveyor

Our exclusive formula provides reliability and longevity in every conveyor.

  • Proven formula of malleable core and case hardness affords optimum chain strength
  • Chain links are carburized to 550-650 BHN
  • Machined yokes provide tight, controlled fit between links
Learn more about the CDM chain.


Drag Chain Conveyor System Installation

En-Masse Conveyor System Installation

The operating principle of the Drag Chain Conveyor allows for mass movement of heavy-duty material. See the conveyor operation live:



Chain Analysis Reveals Why Formula Matters

The data presented below are the results of an independent lab chemical analysis. The analysis was performed using 10 different industry available drag chains currently selling in the industrial market. Of the 10, we show 6 here because 4 were not even alloy steel making them an unequal comparison to the CDM Systems Chain Formula. The 6 manufacturer’s chain assemblies that use an alloy steel are shown below.

Chemical Analysis and Micro Structure Testing of Various 142MM Pitch Chains


Core Hardness (BHN):300-400300-400300-400415300-400355
Case Hardness (BHN):550-650550-650550-600535500-550550-650
Effective Depth of Case:.

The Chain Formulation Means the Difference Between Potential Catastrophic Failure and Operating Long-Term at Full Capacity

The most important feature of any drag chain formula is the effective case hardness depth. Once this case is worn through, elongation will accelerate and become a significant factor in maintenance. However, case depth is not unlimited and not the only factor in building a strong chain. The right formula or case hardness and ductility are critical. Too hard, as with a depth noted above of .055 and the ductility and impact resistance will be compromised and cause failures.



Get more details about our Drag chain Conveyor


Ash Handling Application In Review

Power House Reduces Maintenance and Increases Efficiency with a Complete Coal and
Ash Handling System

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A power house in the northeastern part of North Dakota needed to upgrade their central heating system. The aging system was costly to operate due to high maintenance and lack of efficiency. See how the CDM ash handling system helped save hundreds-of-thousands of dollars in heating and maintenance costs within the first year.


Drop-Forged Chain
En-Masse Conveyor

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Experience In Power

  • Connecticut Light & Power
  • Delano Energy
  • Florida Light & Power
  • Honolulu Power
  • Koda Energy
  • Sask Power
  • And Many More

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