MINING INDUSTRY – CHAIN EQUIPMENT & UNDERCARRIAGE SYSTEMS
Extraction & Crushing Feed
Apron Feeders & Armoured Chain Conveyors
Massive capacities (300–1 200 t/h+) (Higher customizable sizes available), robust against rock abrasion.
Deep Pan & Drag Conveyors
Long-distance horizontal transport of coal, ore, aggregates.
Reclaimers / Stockyards
Stackers & Reclaimers
Plate-chain buckets and scraper chains for stacking large batches, reclaiming into process streams.
Surface Mining – Primary Extraction & Transport
Apron Feeders (ROM bins / Tippler feed)
Purpose: Feed large-size raw coal, iron ore, or bauxite from tippler hoppers or dozer-traps.
Chain Type: Heavy-duty forged link chains, pin diameters 40–60 mm.
Design Specs:
Capacity: 800–3000 TPH (Higher customizable sizes available).
Manganese or alloy steel pans (replaceable).
Withstand direct impact from 1–2 m drops.
Reversible hydraulic or electro-mechanical drive units.
Crushing & Screening Zones
Drag Chain Feeders (Primary crusher inlet)
Purpose: Controlled feed of rocks to crushers.
Chain Type: Drop-forged double strand with flight bars.
Design:
Slow-speed dosing of bulk material.
Built-in interlocking with crusher drive.
Underground Chain Conveyors (Longwall / Bord & Pillar)
Chain Type: Twin-strand round link chain (DIN 22252/764).
Specifications:
Suitable for ATEX / methane zone rated.
Hardened scraper bars with side-bolted links.
Designed for high-volume continuous haulage systems.
Silo Feeding & Bunkering
Chain Type: Central or round link forged chain.
Features:
Designed to handle granular ores, coal, or slag.
Wear-resistant buckets with edge reinforcement.
Capacities: 200–1000 TPH (Higher customizable sizes available).
Lift heights: up to 60 m. (Higher customizable sizes available).
Dust Handling & Ash Collection
Enclosed Flow / Drag Chain Conveyors
Purpose: Conveying filter dust, dry ash, fine ore residues.
Chain Type: Drop-forged scraper chain.
Key Features:
Explosion-proof optional.
Dust-tight housing.
Low maintenance and enclosed for safety in deep pit handling.
Stockpile Reclaiming Systems
Reclaimers (Portal or side scraper)
Purpose: Recover coal, ore, or additives from open stockpiles.
Chain Type: Round link chain with scraper blades.
Design:
Automated reclaim with feed control.
Integrated with stacking systems.
Mobile Surface Reclaim Conveyors
Track-mounted drag chain systems usable on uneven terrain.
HEMM (Heavy Earth Moving Machinery) – Undercarriage Components
Track Chains for Dozers, Excavators, and Shovels
Type: Sealed & lubricated or dry track chains (sealed and greased for extended life).
Size Range: Track pitch from 135 mm to 260 mm (Higher customizable sizes available).
Material: 35CrMnMo, Boron-treated alloy steel.
Hardness: Core 35–40 HRC; surface 50–58 HRC.
Features:
Heat-treated bushings, press-fit pins.
Anti-corrosion phosphate coating optional.
Track Pads / Shoes
Application: Dozers, hydraulic shovels, drills.
Type: Cast manganese or fabricated shoes.
Features:
Triple grouser, flat, and swamp-type available.
Weld-on or bolt-on designs.
Drilled with standard hole pitch or customized per undercarriage.
Sprockets & Idlers
Type: Segmented sprockets, single piece forged sprockets.
Material: Cast or drop-forged steel with hardened teeth.
Use: Matched to track pitch; available for Komatsu, BEML, CAT, Tata Hitachi machines.
Features:
Machined mounting surface with tight tolerances.
Surface hardened to 50–55 HRC for wear resistance.
Carrier & Bottom Rollers
Sealed-for-life options available.
Suitable for high-shock mining terrain.
CHAIN TYPES & COMPONENT SUMMARY
| Component / Chain Type | Application Area | Key Characteristics |
| Forged Link Chain | Apron Feeders, Crushers | High impact strength, alloy-hardened links |
| Drop Forged Scraper Chain | Dust/ash flow conveyors, reclaimers | Rugged scraper chains with replaceable flights |
| Round Link Mining Chain | Underground conveyors, longwall systems | Welded closed loops, case-hardened surface |
| Central Chain | Bucket elevators, pan conveyors | Precision pitch, high wear resistance |
| HEMM Track Chains | Dozers, Excavators, Drills | Heat-treated pins/bushings, sealed or greased |
| Track Pads | Undercarriage ground contact | Triple grouser, bolt-on type with ribbed surface |
CONSTROMECH ADVANTAGES IN MINING SECTOR
- Heavy-duty bulk chain systems for high-torque applications.
- Track chains, rollers, and pads compatible with leading OEMs
- Chain metallurgy tailored for abrasion, corrosion, and impact.
- Local manufacturing with short delivery lead time and rapid spare support.
- Field assistance for retrofit, reverse engineering, and failure analysis