{"id":865,"date":"2026-08-17T05:28:54","date_gmt":"2026-08-17T05:28:54","guid":{"rendered":"https:\/\/engineer-class-chain.com\/?post_type=product&p=865"},"modified":"2026-08-17T10:06:34","modified_gmt":"2026-08-17T10:06:34","slug":"mining-round-link-chain-din-22252-grade-b-c-10x40-to-42x146-mm","status":"publish","type":"product","link":"https:\/\/engineer-class-chain.com\/de\/product\/mining-round-link-chain-din-22252-grade-b-c-10x40-to-42x146-mm\/","title":{"rendered":"Mining Round Link Chain \u2013 DIN 22252 | Grade B & C | 10\u00d740 to 42\u00d7146 mm"},"content":{"rendered":"
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Ever-power Engineer Class Chain Co., Ltd<\/p>\n

Mining Round Link Chain<\/h2>\n

23MnNiMoCr54 Alloy Steel \u00a0\u00b7\u00a0 Grade B \/ C \u00a0\u00b7\u00a0 DIN 22252<\/p>\n

Core traction component for scraper conveyors and longwall AFC equipment. Diameter range 10\u00d740 to 42\u00d7146 mm. Tensile strength \u2265 1,600 MPa (Grade C). 3D flaw-detected and dynamic load-tested every batch.<\/p>\n

View Specifications<\/a><\/div>\n<\/div>\n
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\"Mining<\/p>\n

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Certified by \u00a0|\u00a0 Lloyd’s Register \u00a0\u00b7\u00a0 ABS \u00a0\u00b7\u00a0 Bureau Veritas \u00a0\u00b7\u00a0 DNV \u00a0\u00b7\u00a0 ISO 9001 \u00a0\u00b7\u00a0 ISO 14001 \u00a0\u00b7\u00a0 MA Mining Safety Mark<\/p>\n<\/section>\n

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Product Overview<\/p>\n

Built for Underground Mining Conditions<\/h2>\n

Mining round link chains are the core traction component of mechanised coal-face equipment \u2014 armoured face conveyors (AFC), stage loaders, and scraper conveyors. Every link is precision-braided and quench-tempered from 23MnNiMoCr54<\/strong> or 25MnV<\/strong> alloy steel, achieving Grade C tensile strength of \u2265 1,600 MPa<\/strong>.<\/p>\n

Ever-power Engineer Class Chain Co., Ltd produces the full size range from 10\u00d740 mm to 42\u00d7146 mm<\/strong>, covering underground hoisting, ore-transfer conveyors, and open-cut mining transport. Mean time between failures exceeds 8,000 operating hours<\/strong> under one-million-tonne daily coal output.<\/p>\n

All products are manufactured and tested to DIN 22252<\/strong>. Each batch undergoes 18-stage quality control including three-dimensional magnetic-particle flaw detection and dynamic load verification before dispatch.<\/p>\n<\/div>\n

\"Ever-power<\/div>\n<\/section>\n

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Technical Data<\/p>\n

Dimensional & Load Specifications<\/h2>\n

Reference standard: DIN 22252 \u00a0|\u00a0 Loads in kN \u00a0\u00b7\u00a0 Dimensions in mm \u00a0\u00b7\u00a0 Weight in kg\/m<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Spec (mm)<\/th>\nDiameter (mm)<\/th>\nPitch (mm)<\/th>\nMin. Inner W. (mm)<\/th>\nMax. Outer W. (mm)<\/th>\nWeight (kg\/m)<\/th>\nTest Load (kN)<\/th>\nMin. Breaking (kN)<\/th>\nGrade<\/th>\n<\/tr>\n<\/thead>\n
10\u00d740<\/td>\n10 \u00b1 0.4<\/td>\n40 \u00b1 0.5<\/td>\n12<\/td>\n34<\/td>\n1.9<\/td>\n85<\/td>\n110<\/td>\nB<\/span><\/td>\n<\/tr>\n
100<\/td>\n130<\/td>\nC<\/span><\/td>\n<\/tr>\n
14\u00d750<\/td>\n14 \u00b1 0.4<\/td>\n50 \u00b1 0.5<\/td>\n17<\/td>\n48<\/td>\n4<\/td>\n150<\/td>\n190<\/td>\nB<\/span><\/td>\n<\/tr>\n
200<\/td>\n250<\/td>\nC<\/span><\/td>\n<\/tr>\n
18\u00d764<\/td>\n18 \u00b1 0.5<\/td>\n64 \u00b1 0.6<\/td>\n21<\/td>\n60<\/td>\n6.6<\/td>\n260<\/td>\n320<\/td>\nB<\/span><\/td>\n<\/tr>\n
330<\/td>\n410<\/td>\nC<\/span><\/td>\n<\/tr>\n
22\u00d786<\/td>\n22 \u00b1 0.7<\/td>\n86 \u00b1 0.9<\/td>\n26<\/td>\n74<\/td>\n9.5<\/td>\n380<\/td>\n480<\/td>\nB<\/span><\/td>\n<\/tr>\n
490<\/td>\n610<\/td>\nC<\/span><\/td>\n<\/tr>\n
26\u00d792<\/td>\n26 \u00b1 0.8<\/td>\n92 \u00b1 0.9<\/td>\n30<\/td>\n86<\/td>\n13.7<\/td>\n540<\/td>\n670<\/td>\nB<\/span><\/td>\n<\/tr>\n
680<\/td>\n850<\/td>\nC<\/span><\/td>\n<\/tr>\n
30\u00d7108<\/td>\n30 \u00b1 0.9<\/td>\n108 \u00b1 1.0<\/td>\n34<\/td>\n98<\/td>\n18<\/td>\n710<\/td>\n890<\/td>\nB<\/span><\/td>\n<\/tr>\n
900<\/td>\n1130<\/td>\nC<\/span><\/td>\n<\/tr>\n
34\u00d7126<\/td>\n34 \u00b1 1.0<\/td>\n126 \u00b1 1.2<\/td>\n38<\/td>\n109<\/td>\n22.7<\/td>\n900<\/td>\n1140<\/td>\nB<\/span><\/td>\n<\/tr>\n
1160<\/td>\n1450<\/td>\nC<\/span><\/td>\n<\/tr>\n
38\u00d7137<\/td>\n38 \u00b1 1.1<\/td>\n137 \u00b1 1.4<\/td>\n42<\/td>\n123<\/td>\n29<\/td>\n1450<\/td>\n1810<\/td>\nC<\/span><\/td>\n<\/tr>\n
42\u00d7146<\/td>\n42 \u00b1 1.3<\/td>\n146 \u00b1 1.5<\/td>\n46<\/td>\n135<\/td>\n35.3<\/td>\n1770<\/td>\n2220<\/td>\nC<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Max. extension at test load: 1.4% (Grade B) \/ 1.6% (Grade C) \u00a0\u00b7\u00a0 Min. elongation at fracture: 12%<\/p>\n<\/div>\n<\/section>\n

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Specifications & Construction<\/p>\n

Product Features<\/h2>\n
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Material: 23MnNiMoCr54 Alloy Steel<\/h3>\n

Links are precision-braided from 23MnNiMoCr54 or 25MnV alloy steel and processed through water quench and temper to achieve the specified Grade B or Grade C tensile properties.<\/p>\n<\/div>\n

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Tensile Strength \u2265 1,600 MPa (Grade C)<\/h3>\n

Grade C chains meet a minimum breaking load commensurate with \u2265 1,600 MPa tensile strength. Grade B chains are available for applications with lower load requirements.<\/p>\n<\/div>\n

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Standard: DIN 22252<\/h3>\n

All chains are manufactured and tested to DIN 22252 international standard, covering dimensional tolerances, mechanical properties, and acceptance testing requirements.<\/p>\n<\/div>\n

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Quality Control: 18-Stage Process<\/h3>\n

Every batch undergoes three-dimensional magnetic-particle flaw detection and dynamic load verification as part of an 18-stage QC protocol. Certificates of conformance are issued per shipment.<\/p>\n<\/div>\n

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Size Range: 10\u00d740 to 42\u00d7146 mm<\/h3>\n

Nine standard diameter-pitch combinations are available. Custom intermediate sizes can be produced on request to match specific conveyor or haulage equipment requirements.<\/p>\n<\/div>\n

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Surface Treatment Options<\/h3>\n

Available with hot-dip galvanising, electro-galvanising, blackening, carburising, or epoxy powder coating, selected according to the corrosive and humidity conditions of the operating environment.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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\"Mining<\/p>\n

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Application Sectors<\/p>\n

Where Mining Round Link Chains Are Used<\/h2>\n
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\u26cf<\/span><\/p>\n

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Armoured Face Conveyors (AFC)<\/p>\n

Primary traction chain for longwall scraper systems at coal faces.<\/p>\n<\/div>\n<\/div>\n

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\ud83c\udfed<\/span><\/p>\n

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Stage Loaders & BSL Conveyors<\/p>\n

Transfer-point drive chains for continuous high-tonnage throughput.<\/p>\n<\/div>\n<\/div>\n

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\ud83e\udea8<\/span><\/p>\n

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Underground Hoisting Systems<\/p>\n

Shaft and incline haulage where cyclic load and fatigue resistance matter.<\/p>\n<\/div>\n<\/div>\n

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\ud83d\ude9b<\/span><\/p>\n

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Open-Cut Ore Transport<\/p>\n

Surface mining conveyors operating in dusty, abrasive, or wet conditions.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Approvals & Certifications<\/p>\n

International Certifications<\/h2>\n

Ever-power Engineer Class Chain Co., Ltd holds certifications covering mining, marine, and general industrial chain supply. Full certificate documentation is available on request during the enquiry process.<\/p>\n

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\u2714 Lloyd’s Register<\/div>\n
\u2714 ABS<\/div>\n
\u2714 Bureau Veritas<\/div>\n
\u2714 DNV<\/div>\n
\u2714 ISO 9001<\/div>\n
\u2714 ISO 14001<\/div>\n
\u2714 CE Mark<\/div>\n
\u2714 MA Mining Safety<\/div>\n<\/div>\n<\/div>\n
\"Ever-power<\/div>\n<\/div>\n<\/section>\n

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Project References<\/p>\n

Supply References<\/h2>\n
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Arctic Mining \u00b7 Russia<\/p>\n

Norilsk Nickel Mine \u2014 Deep Shaft Hoisting at \u221250 \u00b0C<\/h3>\n

Ever-power supplied mining chains rated to \u221250 \u00b0C for a 1,200 m deep-shaft hoisting system at a nickel mine within the Arctic Circle. The specification included a custom alloy grade and sub-zero Charpy impact testing prior to shipment.<\/p>\n<\/div>\n

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Coal Mining \u00b7 Siberia<\/p>\n

Kuzbass Coal Basin \u2014 Corrosion-Resistant Conveyor Chain<\/h3>\n

Corrosion-resistant conveyor chains supplied to a coal basin operation in Siberia. Chains were specified for high-humidity underground conditions and exposure to acidic groundwater over multi-year service intervals.<\/p>\n<\/div>\n

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Coal Mining \u00b7 Germany<\/p>\n

German Hard Coal Operation \u2014 DIN 22252 Supply<\/h3>\n

Ever-power mining round link chains were qualified as a replacement for domestically sourced product at a German hard coal mining enterprise. Chains met DIN 22252 requirements and matched the required fatigue life at a lower procurement cost.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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FAQ<\/p>\n

Frequently Asked Questions<\/h2>\n
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What steel grade is used?<\/h3>\n

The primary alloy is 23MnNiMoCr54. For applications requiring higher toughness at elevated pitch, 25MnV is also available. Both are water-quench-tempered to achieve the specified Grade B or Grade C tensile properties.<\/p>\n<\/div>\n

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What is the minimum breaking load for 34\u00d7126 Grade C?<\/h3>\n

The minimum breaking load for 34\u00d7126-C is 1,450 kN, with a test load of 1,160 kN and maximum extension of 1.6% at test load. Minimum elongation at fracture is 12%.<\/p>\n<\/div>\n

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Are these chains compliant with DIN 22252?<\/h3>\n

Yes. All mining round link chains are manufactured and tested to DIN 22252. Certificates of conformance are available on request.<\/p>\n<\/div>\n

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What surface treatment options are available?<\/h3>\n

Standard options include hot-dip galvanising, electro-galvanising, blackening, carburising, and epoxy powder coating. The appropriate treatment is selected based on the corrosive and humidity conditions of the operating environment.<\/p>\n<\/div>\n

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Is flaw detection carried out on every batch?<\/h3>\n

Yes. Three-dimensional magnetic-particle flaw detection is carried out on every production batch as part of the standard 18-stage QC process, along with dynamic load verification before dispatch.<\/p>\n<\/div>\n

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Can you supply chains rated for temperatures below \u221240 \u00b0C?<\/h3>\n

Yes. Ever-power has supplied chains rated to \u221250 \u00b0C for deep-shaft Arctic mining applications. Sub-zero Charpy impact test reports are available on request.<\/p>\n<\/div>\n

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What certifications does Ever-power hold?<\/h3>\n

Ever-power Engineer Class Chain Co., Ltd holds ISO 9001, ISO 14001, MA Mining Safety, Lloyd’s Register, ABS, Bureau Veritas, DNV, and CE approvals. Certificate copies are provided on request during the enquiry process.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Also from Ever-power<\/p>\n

Related Products<\/h2>\n\n\n\n\n\n
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Mining Chains<\/p>\n

Mining Compact Chain<\/a><\/p>\n

22\u00d786 to 60\u00d7197 mm \u00b7 Grade C\/D \u00b7 AFC and scraper conveyors<\/p>\n<\/td>\n

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Lifting Chains<\/p>\n

Grade 80 Lifting Chain<\/a><\/p>\n

EN 818-2 \u00b7 6\u201348 mm \u00b7 port handling and industrial lifting<\/p>\n<\/td>\n<\/tr>\n

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Lifting Chains<\/p>\n

Grade 100 Lifting Chain<\/a><\/p>\n

EN 818-2 \/ ISO 3077 \u00b7 8\u201326 mm \u00b7 heavy industrial and harbour crane use<\/p>\n<\/td>\n

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Mining Accessories<\/p>\n

Round Link Chain Connecting Links<\/a><\/p>\n

Flat-arc and flat-saw-tooth types \u00b7 18\u00d764 to 48\u00d7152 mm<\/p>\n<\/td>\n<\/tr>\n

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Mining Accessories<\/p>\n

Central Chain Scraper Flight Bar<\/a><\/p>\n

Compatible with 22\u00d786 to 42\u00d7146 chain \u00b7 matched to trough dimensions<\/p>\n<\/td>\n

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Specialty Chains<\/p>\n

Stainless Steel Chain<\/a><\/p>\n

304 \/ 316 \/ 316L \u00b7 2\u201332 mm \u00b7 corrosion-resistant applications<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Mining round link chains are part of a wider category of industrial chain drive products. Those specifying chains for coal handling plant or surface conveyor drives may find the technical data on conveyor chain selection and load ratings<\/a> and power transmission chain standards<\/a> useful as reference. Industrial roller chain specifications<\/a> and heavy-duty chain engineering data<\/a> are also relevant for surface plant drives that operate alongside underground round link chain systems.<\/p>\n<\/div>\n<\/section>\n


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