Mining Chains
Mining Compact Chain High Strength Mining Flat Chains
A high-tension mining chain composed of alternating welded circular rings and forged flat rings, designed for heavy-duty coal and material transport in mining operations. It delivers high strength and wear resistance in harsh conditions, with a compact structure that reduces friction and prevents chain drop or jamming. Available in sizes from 22*86 to 48*152, with test loads from 490 KN to 2900 KN and minimum breaking loads from 2890 KN to 3610 KN.
- Catalogue Family
- Mining Chains
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What Mining Compact Chain Gives You
- Alternating forged flat rings and welded circular rings provide high tensile strength and impact resistance for continuous mining duty
- Compact structure reduces link gaps, minimizing chain drop and jamming during high-speed operation
- Special surface treatment increases hardness and wear resistance for extended service life in abrasive environments
- Reduced friction and energy loss due to tighter link fit and smoother running surface
- High test load and breaking strength values ensure reliable performance under heavy dynamic loads
- Stable operation at high speeds with minimal elongation under test load (max 1.9%)
- Proven performance in mining applications where chain failure can halt production or create safety risks
Application Scenarios
Where Mining Compact Chain Is Used
- Coal conveyor systems in underground and surface mining where chains endure continuous high tension and abrasive material flow
- Material handling in mining yards where chains must resist wear from coal, rock, and debris over long shifts
- High-speed transfer lines in mining processing plants where chain stability and low elongation are critical
- Heavy-duty mining equipment such as draglines, bucket wheel excavators, and longwall shearers
- Operations in dusty, wet, or high-vibration environments where chain durability and resistance to degradation are essential
Who It Is For
Buyers This Product Is Built For
- Mining equipment OEMs building conveyors and haulage systems for coal and bulk material
- Mining contractors specifying durable chain for long-term use in high-wear applications
- Maintenance teams replacing chains in existing mining conveyors with proven high-strength alternatives
- Industrial suppliers sourcing chains for mining and bulk handling applications with strict performance requirements
- Logistics and plant managers needing chains that reduce downtime from chain failure or misalignment
Problems It Solves
Problems This Product Removes
- Chain breakage or premature wear in high-abrasion mining environments due to low material hardness or poor surface treatment
- Chain drop or jamming in conveyors caused by loose link fit or excessive gap between links
- Excessive elongation under load leading to misalignment, belt slippage, or drive system failure
- Frequent chain replacement due to insufficient tensile strength or impact resistance in harsh conditions
- Inconsistent performance across different chain sizes due to lack of standardized test and breaking load data
- Sourcing multiple chain types from different suppliers for a single conveyor system, increasing procurement complexity
Technical Features
Technical Features
- Alternating forged flat rings and welded circular rings for high strength and impact resistance
- High-tension design with compact structure to reduce link gaps and prevent chain drop
- Test load and breaking load values specified for each size to ensure performance validation
- Maximum elongation under test load capped at 1.9% to maintain alignment and tension control
- Minimum total elongation at break of 12% to ensure ductility and resistance to brittle failure
- Surface treatment for increased hardness and wear resistance in abrasive mining environments
- Standardized dimensions and weight per meter for consistent engineering design and replacement
Specifications
Mining Compact Chain Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Chain Specifications | 22*86 to 48*152 mm |
|---|---|
| Ring Diameter | 22±0.7 mm to 48±1.4 mm |
| Inner Width | 26 mm to 62 mm |
| Pitch | 86±0.9 mm to 152±1.5 mm |
| Maximum Outer Width b1 | 77 mm to 162 mm |
| Maximum Outer Width b2 | 60 mm to 127 mm |
| Unit Weight | 8.9 kg/m to 46.8 kg/m |
| Test Load (C) | 490 KN to 2900 KN |
| Test Load (D) | 610 KN to 3610 KN |
| Elongation under Test Load | Max 1.9% |
| Breaking Load (Min) | 2890 KN to 3610 KN |
| Total Elongation at Break | Min 12% |
| Material | High-quality alloy steel |
| Surface Treatment | Special treatment for hardness and wear resistance |
Full size table on request. The catalogue publishes a full dimension and capacity table for this item. Ask on WhatsApp or by email and we will send it as a PDF.
Materials
Materials And Finishes
- High-quality alloy steel for the forged flat rings and welded circular rings
- Heat-treated material to enhance tensile strength and impact resistance
- Surface treatment applied to increase hardness and resist abrasive wear in mining conditions
- Welded joints made with precision to maintain structural integrity under dynamic loads
Manufacturing Process
How This Product Is Made
1Forging of flat ring blanks from alloy steel billets
2Welding of circular rings using controlled arc welding to ensure joint strength
3Assembly of alternating rings into chain links
4Surface treatment process to increase hardness and wear resistance
5Proof load testing on production batches to verify test load and elongation
6Dimensional inspection against published size tables
7Final inspection and packing for export
Quality Control
Quality Control On Every Batch
- Proof load testing on each production batch to confirm test load and elongation values
- Dimensional tolerance check against published specifications
- Breaking strength validation to ensure minimum breaking load is met
- Visual and dimensional inspection of welds and forged joints
- Surface hardness and wear resistance verified through process control
- Material Test Certificate to EN 10204 3.1 supplied with orders
- Third-party inspection accepted at the China warehouse before shipment
Customisation
Customisation Options
- Custom chain sizes and configurations built to a supplied drawing
- Custom tonnage stamping on chain links for traceability
- Private label and OEM marking available
- Custom surface finish including zinc plating or powder coating on request
- Custom packing configurations for cartons and pallets to suit warehouse or shipping needs
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Standard roller chain | The mining compact chain has higher strength and wear resistance for heavy-duty mining use, but is not designed for high-speed precision applications |
| Open-link chain | The compact structure reduces chain drop and jamming, but has less flexibility and is harder to disassemble in the field |
| Bush chain | The forged flat rings offer better impact resistance, but the compact design limits chain adjustability and requires precise alignment |
| Standard welded chain | The alternating forged and welded rings provide superior strength and durability, but the manufacturing process is more complex and costly |
Use Guide
How To Use And Inspect Mining Compact Chain
- Verify the stamped test load and breaking load values match the required duty before installation
- Ensure the chain is aligned properly on sprockets to avoid side loading and uneven wear
- Inspect for signs of elongation, deformation, or surface wear during routine maintenance
- Replace the chain if elongation exceeds 1.9% under test load or if the breaking load is no longer met
- Use only with compatible sprockets and drive systems designed for high-tension mining chains
- Maintain proper tension to prevent slack that can cause chain drop or misalignment
- Keep the chain clean and free of debris to prevent accelerated wear in abrasive environments
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Answers
Mining Compact Chain FAQ
What is the test load and breaking load for a 38*146 chain?
Test load C is 1450 KN, D is 1810 KN; minimum breaking load is 1810 KN for C and 2270 KN for D.
Is the chain suitable for high-speed mining conveyors?
Yes, the compact structure and low elongation under test load (max 1.9%) support stable high-speed operation.
Can you supply Material Test Certificates?
Yes, a Material Test Certificate to EN 10204 3.1 is supplied with every order upon request.
What surface treatments are available?
Standard surface treatment for hardness and wear resistance; custom finishes such as zinc plating or powder coating are available on request.
Can you make custom chain sizes?
Yes, custom sizes and configurations can be built to a supplied drawing, including custom tonnage stamping and OEM marking.
How is the chain packed for export?
Standard carton and pallet packing; we can configure carton count and pallet pattern to suit your warehouse or shipping requirements.
What is the maximum elongation under test load?
The maximum elongation under test load is 1.9% for all sizes, ensuring consistent performance and alignment in operation.
Need A Quote On Mining Compact Chain
Send the sizes, the finish and the quantity on WhatsApp or by email. You get a priced reply within 24 hours and a straight answer on stock.
We reply within 24 hours on WhatsApp or by email. Send a drawing, a photo or a bill of materials and we will quote it as it stands.