In industrial manufacturing environments where precision, automation, and continuous production are essential, the roller hearth furnace stands out as one of the most versatile and efficient furnace types. These furnaces offer consistent temperature control, high throughput, and excellent surface quality, making them ideal for atmosphere heat treatment, sintering, bright annealing, and stress relieving processes. As trusted roller hearth furnace manufacturers in India, Maan Global Industries offers state-of-the-art thermal systems tailored to automotive, aerospace, metallurgical, forging, and bearing industries. Our systems are designed for both ferrous and non-ferrous components, operating under controlled atmospheres or in air.
What Is a Roller Hearth Furnace?
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A roller hearth furnace is a continuous heat treatment system in which components are transported through the heated chamber on rollers. These rollers are driven by a motorized chain or gear mechanism, ensuring continuous and smooth movement of parts through multiple temperature zones.
Key characteristics:
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Fully automated material handling
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Continuous or semi-continuous operation
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Precise thermal uniformity
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Atmosphere or air heating compatibility
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Configurable for gas-fired or electric heating
Leading manufacturers of roller hearth furnaces design systems that meet both high-volume production needs and stringent metallurgical quality standards.
Why Choose Roller Hearth Furnace Manufacturers in India?
| Feature | Benefit |
|---|---|
| Continuous Processing | Ideal for mass production lines |
| Uniform Heating | Multiple zones ensure ±5°C temperature uniformity |
| Automated Material Flow | Eliminates manual loading/unloading, reducing labor costs |
| Atmosphere Control | Nitrogen, hydrogen, or endo gas ensures bright surface finishes |
| Energy Efficient | Recuperative burners or insulation reduce operating costs |
| Versatility | Supports hardening, annealing, brazing, tempering, sintering |
Working with experienced roller hearth furnace manufacturers in India ensures furnace designs that match your product geometry, process cycle, and gas requirements.
Construction Details by Manufacturers of Roller Hearth Furnaces
As expert manufacturers of roller hearth furnaces, Maan Global Industries provides robust mechanical and thermal design including:
Structural Frame
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Fabricated mild steel structure with reinforced chamber wall
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Internal lining of ceramic fiber and high-alumina refractory bricks
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SS radiant tubes or muffles for atmosphere protection (if applicable)
Roller Conveyor System
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Water-cooled or ceramic rollers
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Drive system: AC motors with VFD and reduction gearbox
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Roller pitch and speed: Configurable based on part size and cycle time
Heating System
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Electric: NiCr, MoSi₂, or graphite elements
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Gas-Fired: High-velocity burners with temperature zoning
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Zones: Pre-heating, soaking, and cooling sections
Atmosphere Control
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Inert: N₂, Ar, or He
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Reactive: Endo gas, NH₃, H₂
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Gas flow meters, dew point controllers, and oxygen analyzers integrated
Bright Annealing Furnace Manufacturers
Technical Specifications – Roller Hearth Furnaces
| Parameter | Specification Range |
|---|---|
| Temperature Range | 300°C – 1250°C |
| Load Size | Customizable (50 mm to 2000 mm width) |
| Throughput | 100 kg/hr to 5000 kg/hr |
| Heating Method | Electric or Gas-fired |
| Control System | PLC + HMI with SCADA |
| Atmosphere Support | N₂, Ar, H₂, Endo, NH₃ |
| Zones | 2 to 7 zones |
| Cooling | Forced air, water-jacketed, or inert gas |
| Rollers | Water-cooled SS / Ceramic / Graphite |
| Drive System | VFD-controlled chain or gear drive |
As one of the most experienced roller hearth furnace manufacturers in India, we deliver systems compliant with ISO, CE, and AMS2750 standards.
Types of Roller Hearth Furnaces by Maan Global Industries
1. Atmosphere Roller Hearth Furnace
Used for heat treatment under protective gases to avoid oxidation, decarburization, and scaling.
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Applications: Bright annealing, sintering, carburizing
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Gases: Nitrogen, hydrogen, endo gas
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Industries: Tooling, automotive, aerospace
2. Continuous Roller Hearth Furnace
Designed for mass production lines with uninterrupted material flow.
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Used for forging, fasteners, bearings
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Integrated with automated loading/unloading systems
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Zonal heating and cooling with temperature feedback
3. Bright Annealing Roller Hearth Furnace
Built with sealed chambers and pure hydrogen/nitrogen atmosphere for surface-sensitive materials.
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Ideal for: Stainless steel coils, tubes, wires
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Chamber: Sealed with SS muffles, dew point < –40°C
Applications Served by Roller Hearth Furnace Manufacturers in India
| Industry | Heat Treatment Application | Furnace Type |
|---|---|---|
| Automotive | Gear and bearing annealing | Atmosphere roller hearth |
| Aerospace | Titanium or Inconel solution treatment | Continuous roller hearth |
| Tool & Die | Hardening and tempering of dies | Electric roller hearth |
| Forging | Stress relieving of forged components | Gas-fired roller hearth |
| Bearings & Fasteners | Bright annealing under hydrogen | Sealed roller hearth with N₂/H₂ |
Leading manufacturers of roller hearth furnaces customize these systems for high-precision treatment and throughput optimization.
How Roller Hearth Furnaces Work – Step-by-Step Process
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Component Loading
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Parts are placed directly on the conveyor rollers or trays.
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Input can be batch-fed or automated using a loader.
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Heating Zones
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Furnace is divided into multiple zones, each with its own temperature control.
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Roller speed and residence time are adjusted to achieve uniform heating.
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Atmosphere Conditioning (Optional)
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Gas is purged continuously to maintain dew point, oxygen content, and pressure.
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Integrated analyzers maintain desired gas composition.
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Soaking and Cooling
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Parts are soaked at target temperature (e.g., 850–1100°C).
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Cooled in downstream section under atmosphere or forced air.
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Discharge
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Parts exit via roller system into unloading bay or conveyor
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Can be integrated with pick-and-place robots or transfer arms
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Case Study – Continuous Roller Hearth Furnace for Automotive Supplier
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Client: Tier-1 automotive bearing manufacturer, Pune
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Furnace Type: Sealed atmosphere roller hearth
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Temp Range: 1050°C for 6 hours soak
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Gas Used: Hydrogen + Nitrogen blend with dew point controller
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Roller Width: 1000 mm
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Throughput: 800 kg/hr
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Outcome:
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Achieved mirror-finish annealed bearings
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Surface oxidation reduced by 95%
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Cycle time reduced by 40% compared to batch furnaces
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This project showcases our capability as leading roller hearth furnace manufacturers in India for automotive-grade heat treatment.
Why Choose Maan Global – Top Roller Hearth Furnace Manufacturers in India
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Custom Engineering: From 100 kg/hr lab scale to 5000 kg/hr production lines
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Turnkey Support: Layout planning, gas train design, automation
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Advanced Atmosphere Systems: Gas analyzers, dew point sensors, flow control
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Automation Ready: VFD drives, PLC, HMI, SCADA, IoT connectivity
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Global Standards: ISO, CE, AMS compliance, customer audit support
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AMC + Service: Thermocouple calibration, roller maintenance, remote diagnostics
Our reputation as one of the top roller hearth furnace manufacturers in India is built on deep thermal expertise, client-centric engineering, and precision manufacturing.
Contact the Leading Manufacturers of Roller Hearth Furnaces
Ready to upgrade your production line with an energy-efficient, high-throughput, atmosphere-controlled heat treatment system?
Maan Global Industries—trusted manufacturers of roller hearth furnaces—offers end-to-end design, fabrication, installation, and support across India and abroad. Whether it’s for bright annealing, hardening, or stress relieving, our roller hearth furnace solutions are built to outperform and last.
Email: mail@maanglobalindustries.com
Call / WhatsApp: +91-8882490101
