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

Bucket Elevators (Ore or coal fines feeding to silos)

• 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

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