Drag Chain conveyor Manufacturer in India
Drag Chain Conveyor Manufacturer in India
Custom enclosed drag chain conveyors (Redler / en-masse conveyors) for dust-free horizontal and inclined bulk material conveying, fly ash, coal, clinker, biomass, and grain. Up to 200 TPH, up to 60 m per section. Fabricated in Ghaziabad, installed by our own engineers PAN India.
- Fully enclosed, dust-free
- Forged / roller chain
- Horizontal & 0°–45° inclined
FIG. 01 — DRAG CHAIN (REDLER) CONVEYOR, GENERAL ARRANGEMENT
What Is a Drag Chain Conveyor?
A drag chain conveyor, also called a Redler conveyor or en-masse conveyor, uses a continuous chain with attached flight bars moving through a fully enclosed rectangular trough, dragging bulk material along the trough floor while also carrying it as an en-masse column between flights. The result is very high capacity in a compact, fully dust-sealed cross-section.
The En-Masse Principle: Why Capacity Is Exceptional
In a standard drag conveyor, only material directly pushed by each flight bar moves. In an en-masse type, flights are spaced so material between adjacent flights is also carried forward as a continuous column, filling the full trough cross-section simultaneously. This gives 2–3× the conveying capacity of an equivalent screw conveyor cross-section, at lower power per tonne, which is why drag chain conveyors are the preferred choice for high-capacity enclosed handling over distances a screw conveyor can't cover economically.
Fully Enclosed: Complete Dust Containment
The sealed rectangular trough, with gasketed inlet and outlet connections and no rotating shaft penetrations along its length, gives total dust containment throughout. Unlike an open troughed belt conveyor or a screw conveyor with cover-plate joint gaps, the drag chain trough is sealed from inlet to outlet, which is why it's the standard specification at fly ash handling systems, cement raw material transfer, and biomass fuel handling wherever PCB dust compliance or outdoor weatherproofing matters.
Free capacity calculation included: share your material, bulk density, particle size, required TPH, conveyor length, and inclination. Our engineers calculate trough cross-section, chain type, flight spacing, and motor power, and send a GA drawing with the quotation at no charge. Send material details →
Advantages of Drag Chain Conveyors
Six engineering advantages that make the drag chain conveyor the preferred enclosed bulk material handling system for long-distance, high-capacity, and dusty applications.
Dust-Free Material Handling
Complete trough enclosure with sealed connections, zero dust emission along the conveying path, weatherproof for outdoor installation.
High Capacity Conveying
En-masse effect carries material across the full trough cross-section, up to 200 TPH at lower power per tonne than a screw conveyor.
Minimal Material Spillage
No belt edge to spill over, no cover-plate gaps for material to escape, critical for expensive materials and plant cleanliness.
Low Maintenance
No hanger bearings inside the trough. Only head and tail sprocket bearings plus chain tension need periodic attention.
Long Service Life
Forged chain and hardened flight bars resist abrasive wear that rapidly destroys screw flights on clinker, coal, and minerals.
Long Distance Conveying
Single sections up to 60 m, far exceeding the practical length of screw conveyors, at lower power per tonne per metre.
Types of Drag Chain Conveyors
Five configurations for every material, capacity, and installation requirement, from standard horizontal en-masse to heavy-duty forged chain for abrasive hot materials.
Horizontal Drag Chain Conveyor
Standard configuration for cement, power, and grain handling. Multiple intermediate inlets and outlets. Up to 60 m single section, up to 200 TPH.
Best for: fly ash, cement, grain, fertilizer
Inclined Drag Chain Conveyor
Same enclosed trough configured for 0°–45°, elevating material between floor levels without a separate elevator.
Best for: multi-floor plants, space-saving elevation
Enclosed Drag Conveyor
Pressure-rated inspection doors, flanged gasketed spouts, shaft seals, and optional negative-pressure port for strict dust compliance.
Best for: PCB compliance, outdoor, weatherproof
Heavy Duty Drag Conveyor
Forged drop chain, AR400 liner, heavy MS frame, and high-torque drive for highly abrasive materials at elevated temperature.
Best for: clinker, coal, hot ash, abrasive minerals
Redler Chain Conveyor
U- or T-shaped flights on a single central chain, maximising en-masse efficiency in the most compact cross-section.
Best for: grain, seeds, fine free-flowing materials
Materials Handled
Drag chain conveyors handle the widest material range of any enclosed conveyor type, from fine fly ash to coarse coal, light biomass chips to dense mineral powders and grain.
Fly Ash
ESP and bag filter ash. Bulk density 0.6–0.9 t/m³. Sealed trough, PCB compliant.
Coal
Fines and small-lump. Forged chain with AR liner. Enclosed for dust explosion prevention.
Cement Clinker
Cold clinker, cooler to silo. Highly abrasive, heavy-duty forged chain, AR400 liner.
Biomass Fuel
Wood chips, pellets, rice husk, bagasse. Large trough for low bulk density.
Wood Chips
Biomass to boiler/dryer. Bulk density 0.2–0.35 t/m³. Enclosed for fire safety.
Bagasse
Mill to boiler. Fibrous and wet, large-pitch chain, wide trough.
Rice Husk
Storage to boiler, Redler en-masse. Enclosed prevents vermin access.
Grain
Wheat, maize, soybean. Gentle en-masse minimises breakage.
Fertilizer
Urea, DAP, granulated. Sealed trough prevents moisture ingress.
Mineral Powders
Limestone, gypsum, barite. Forged chain and AR liner.
Industries Using Drag Chain Conveyors
Deployed wherever enclosed, high-capacity, long-distance bulk material handling is required across cement, power, biomass, grain, sugar, chemical, and mining sectors.
Cement Plants
Raw meal, clinker, and cement powder transfer. Heavy-duty enclosed drag chain for 24×7 kiln operation, 50–200 TPH.
Power Plants
Fly ash from ESP hoppers, bottom ash, and coal handling. Forged chain for abrasive, hot material.
Biomass Plants
Chips, husk, and pellet transfer from outdoor storage to boiler feed. Enclosed for fire and moisture protection.
Rice Mills
Husk to furnace, paddy and milled rice between stages. Redler type for gentle grain handling.
Sugar Industry
Bagasse mill to boiler. Wide trough, wide chain pitch, enclosed for fire safety.
Chemical Industry
Powder and filler transfer requiring complete dust enclosure and cross-contamination prevention.
Mining Industry
Concentrate, ore fines, and processing waste. Forged chain and AR400 liner for abrasive mining materials.
Fertilizer Plants
Urea, DAP, potash between blending and storage. SS304 for coastal, high-humidity sites.
Grain Silos
Intake, cleaning, drying, and storage transfer. Enclosed for pest control and fire safety.
Technical Specifications
All units are made to order. Trough cross-section, chain type, flight spacing, and motor power are calculated from your material's bulk density, required TPH, length, and inclination.
| Conveyor type | En-masse drag chain, fully enclosed rectangular trough |
|---|---|
| Trough width | 200 mm to 800 mm |
| Trough height | 100 mm to 500 mm |
| Conveyor length | Up to 60 m per section; multi-section for longer runs |
| Inclination | 0° (horizontal) to 45° inclined |
| Capacity | Up to 200 TPH |
| Chain speed | 0.1 to 1.0 m/s, VFD adjustable |
| Trough material | MS (3–10 mm) / SS304 / SS316 |
| Trough liner | UHMWPE / AR400 steel / ceramic, replaceable in sections |
| Inlet / outlet | Flanged and gasketed, dust-tight |
| Power supply | 415 V, 3 Phase, 50 Hz |
Chain Type
Construction Material
Drive System
- Fly ash
- Coal fines
- Cement clinker
- Limestone dust
- Raw meal
- Gypsum powder
- Wood chips
- Rice husk
- Biomass pellets
- Bagasse
- Wheat & maize
- Fertilizer granules
How to Select the Right Drag Chain Conveyor
Four parameters our engineers use to specify trough size, chain type, liner, and drive. Share these for a free selection and GA drawing within 24–48 hours.
Share 6 parameters, material name, bulk density, particle size, required TPH, conveyor length, and inclination, and our engineers calculate trough cross-section, chain type, liner, and motor power with a GA drawing, at no charge. Submit requirements →
Drag Chain Conveyors — Live at Customer Plants
Real Neo Conveyors drag chain conveyor systems in operation, biomass, fly ash, cement, and grain handling installations across India.
Watch on YouTubeDrag Chain Conveyor vs Screw Conveyor
Both move bulk material in an enclosed trough, the chain-and-flight mechanism vs the rotating helical screw. Understanding the differences prevents costly specification errors.
| Factor | Drag chain conveyor | Screw conveyor |
|---|---|---|
| Long distance conveying | Excellent, up to 60 m per section | Moderate, typically under 15 m |
| Dust control | Excellent, fully sealed trough | Good, possible cover-plate leakage |
| Capacity per cross-section | Excellent, en-masse effect 2–3× | Good, limited by filling degree |
| Abrasive material | Excellent, chain above material, AR liner | Moderate, flight wear against trough |
| Hot material (>120°C) | Excellent, forged chain up to 300°C | Limited, flight integrity affected |
| Hanger bearing maintenance | None in material zone | Required every 2–3 m |
| Capital cost (short, low TPH) | Slightly higher | Lower, simpler construction |
Need a screw conveyor for shorter, lower-capacity runs? U-Trough Screw Conveyor → · Tubular Screw Conveyor →
Recent Drag Chain Conveyor Installations
Four recent projects, biomass, fly ash, cement, and rice husk, with engineering parameters and results.
Biomass Fuel Handling System
Mixed wood chips and rice husk conveyed 45 m horizontally from outdoor covered storage to boiler feed. Enclosed MS drag chain with large-pitch HD chain, UHMWPE liner, sealed cover to protect against rain ingress.
- 45 m single section, no intermediate drive
- Zero overflow events in 18 months
Fly Ash Conveyor to Silo
Fly ash transferred 30 m horizontally from ESP collection screws to storage silo, replacing an open belt conveyor that had failed PCB inspection twice. Sealed inlet/outlet flanges and gasketed inspection doors.
- PCB dust reading 0.015 mg/m³ vs 10 mg/m³ limit
- No non-compliance in 22 months
Cement Plant Conveyor
Cold clinker at 80–110°C transferred 35 m from cooler discharge to silo at 80 TPH, 3-shift operation. Heavy-duty forged chain, AR400 liner, PLC integration with kiln DCS.
- AR400 liner: 40% wear at 18-month inspection
- Zero chain replacement, no clinker holdup
Rice Husk Conveyor
Low-density fibrous rice husk conveyed 28 m from storage to boiler feed, replacing a screw conveyor that had blocked during commissioning. Large-pitch wide flights and UHMWPE liner.
- Zero blockage over 20 months
- Minimal liner wear with fibrous material
Why Choose Neo Conveyors?
Every drag chain conveyor is engineered from your material data, chain type, trough cross-section, liner, and drive specified for abrasiveness, bulk density, temperature, and required TPH. In-house design and fabrication at Ghaziabad.
In-House Design Since 2007
Trough cross-section, chain type, liner thickness, and motor torque calculated from your material data, not adapted from a standard product.
1,000+ Installations
18+ years of drag chain projects across cement, power, biomass, rice milling, sugar, and mining industries.
All 5 Types In-House
Horizontal, inclined, enclosed, heavy-duty, and Redler types, no third-party subcontracting of fabrication.
PAN India, Own Engineers
Installation, chain fitting, alignment, liner fitting, and PLC setup by our own engineers, no third-party erection.
GA Drawing With Every Quote
Trough cross-section, chain type, and inlet/outlet positions included at no extra charge.
Spares & AMC Support
Replacement chain links, flight bars, sprockets, and liner sections stocked for all standard trough sizes.
Frequently Asked Questions
What is a drag chain conveyor?
A drag chain conveyor, also called a Redler conveyor or en-masse conveyor, uses a continuous chain with attached flight bars moving through a fully enclosed rectangular trough. The flights drag bulk material along the trough floor, while an en-masse column of material also fills the space between flights, giving very high capacity per trough cross-section with complete dust containment from inlet to outlet.
What materials can drag chain conveyors handle?
Fly ash, coal fines, cement clinker, limestone powder, biomass chips, wood chips, rice husk, bagasse, grain, fertilizer granules, mineral powders, sand, and any dry to semi-dry bulk material with particle size up to 50 mm. Heavy-duty forged chain versions handle highly abrasive clinker, coal, and minerals, and hot material up to 300°C.
What is the difference between a drag chain conveyor and a screw conveyor?
Drag chain conveyors cover longer distances, up to 60 metres per section, with higher capacity per trough cross-section, and no hanger bearings in the material zone. Screw conveyors are simpler and lower cost for short runs under 15 metres. Choose drag chain for longer distances, higher capacity, abrasive materials, or full dust enclosure over long runs.
Can drag chain conveyors handle abrasive materials?
Yes, this is a primary reason they're chosen over screw conveyors for abrasive duty. The chain runs above the material, so only the flight bars and trough liner contact it directly. Forged drop chain and AR400 liner handle clinker, coal, and mineral powders 3 to 5 times longer between major maintenance than an equivalent screw conveyor.
What capacities are available?
Up to 200 TPH standard. Trough width, height, chain speed, and en-masse filling degree are calculated from your material's bulk density, required TPH, and conveyor length, with a free capacity calculation and GA drawing included in every quotation.
Can it be customised?
Yes, every drag chain conveyor is made to order. Trough width, length, inclination, chain type, liner material, construction material, number of inlets and outlets, and drive system are all specified for your material and site.
Do you install drag chain conveyors across India?
Yes, PAN India installation by our own engineers, serving cement plants in Rajasthan, MP, and AP; thermal power plants across UP, Haryana, and Maharashtra; biomass plants across Punjab, Haryana, and UP; and mining facilities across Odisha, Chhattisgarh, and Jharkhand. Standard lead time is 4 to 8 weeks from order confirmation.
What is the price of a drag chain conveyor in India?
Price depends on trough width, conveyor length, chain type, liner material, construction material, number of inlets and outlets, inclination, and drive specification. Contact us at +91-9654112235 for a no-obligation quotation.
Drag Chain Conveyor — Service Locations Across India
Manufactured at our Ghaziabad facility, installed and commissioned by our own engineers at cement plants, power plants, biomass facilities, rice mills, sugar plants, and mineral processing units across all Indian states.
Uttar Pradesh
Ghaziabad (HQ), Noida, Greater Noida, Lucknow, Kanpur, Agra, Meerut, Moradabad, Mathura, Aligarh, Bareilly, Gorakhpur, Varanasi
Delhi NCR & Haryana
New Delhi, Gurugram, Faridabad, Manesar, Bhiwadi, Bawal, Neemrana, Sonipat, Panipat, Ambala, Hisar, Karnal, Yamunanagar
Punjab & HP/Uttarakhand
Ludhiana, Amritsar, Jalandhar, Patiala, Bathinda, Mohali, Baddi, Solan, Haridwar, Roorkee, Rudrapur, Dehradun
Rajasthan & Gujarat
Jaipur, Jodhpur, Udaipur, Kota, Ajmer, Alwar, Ahmedabad, Surat, Vadodara, Rajkot, Gandhinagar, Bharuch, Vapi
Maharashtra & MP/Chhattisgarh
Mumbai, Pune, Nagpur, Nashik, Aurangabad, Thane, Indore, Bhopal, Jabalpur, Pithampur, Raipur, Bhilai, Korba
South & East India
Hyderabad, Chennai, Bangalore, Coimbatore, Kochi, Visakhapatnam, Kolkata, Howrah, Durgapur, Bhubaneswar, Patna, Ranchi, Jamshedpur
Request a Free Quote — GA Drawing Included
Share your material name, bulk density, particle size, required TPH, conveyor length, and inclination. Our engineers calculate trough size, chain type, liner, and motor, GA drawing included within 24–48 hours, no charge.
