Bundle Rod Heater - Image 1 - Industrial Heating Element by Subhot Enterprises
Bundle Rod Heater - Image 2 - Industrial Heating Element by Subhot Enterprises
Bundle Rod Heater - Image 3 - Industrial Heating Element by Subhot Enterprises
Bundle Rod Heater - Image 4 - Industrial Heating Element by Subhot Enterprises
Bundle Rod Heater - Image 5 - Industrial Heating Element by Subhot Enterprises
Bundle Rod Heater - Image 6 - Industrial Heating Element by Subhot Enterprises
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Key Features & Benefits

Up to 1250°C
1 kW to 75 kW
Customizable

Bundle Rod Heater

Furnace Heaters Made in India ISO 9001:2015

Bundle Rod Heaters are premium industrial heating elements specifically engineered for high-temperature furnaces and heavy-duty thermal processing applications. These advanced rod type heating elements feature a sophisticated construction comprising multiple terminal rods, a central support rod, and precision-engineered ceramic discs that form an efficient heating bundle capable of withstanding extreme operational demands.

Manufactured using superior ferrous alloy powder metallurgical elements, including FeCrAl Super, SAPM, FeCrAl HTM, NiCr 80/20 & NiCr 70/30 heating materials, these high temperature rod heaters deliver exceptional thermal performance, uniform heat distribution, and remarkable durability under continuous operation up to 1250°C. The rod bundle heater design incorporates SS 310 or Incoloy support rods and terminals, complemented by high-purity alumina ceramic discs and ceramic fiber components for superior structural integrity.

These high power rod heaters are available in an extensive power range from 1 kW to 75 kW, making them suitable for diverse industrial applications including primary aluminum holding and melting furnaces, galvanizing furnaces in steel industries, automotive heat treatment processes, annealing furnaces, carburizing furnaces, and sealed quench furnaces (SQF). The industrial rod heating bundle technology ensures optimal watt density distribution of 1 to 10 W/cm² with precise cold resistance tolerance of ≤3%.

Key advantages of these furnace rod heaters include their ability to operate in both horizontal and vertical mounting configurations, providing exceptional design flexibility for various furnace layouts. The advanced metallurgy and robust construction deliver significantly longer working life compared to conventional heating systems while maintaining consistent performance throughout their operational cycle.

As an environmentally conscious thermal oil heater alternative, Bundle Rod Heaters substantially reduce CO₂ emissions by eliminating flue gases associated with combustion-based systems. Their higher thermal efficiency minimizes energy consumption and heat losses, making them an ideal choice for industries seeking sustainable heating technologies without compromising operational performance. The heaters feature convenient temperature control capabilities, simplified assembly procedures, and reduced maintenance requirements, ensuring cost-effective long-term operation.

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Components of Bundle Rod Heater

Terminal Rod

Carries the power supply wiring. Usually made of FeCrAl, SS310 or INCOLOY. Number of rods depend upon the supply connection.

Center Rod

Used to provide central support to the heater. Usually made of FeCrAl, SS310 or INCOLOY. It is longer than the terminal rods.

Ceramic Disc

Used to encompass all the heating elements to form a bundle. Made of Alumina. Usually of flower shape.

Fiber Disc

Used to hold the terminal rods and central rod together. Inserted in the cold zone of the heater. Made of ceramic fiber.

Top Plate

Holds and supports terminal rods and central rod. Provides structural stability and secure mounting of the heater assembly.

Technical Specifications

Detailed technical specifications for Bundle Rod Heater with industry-leading performance standards

Product Specifications

Complete technical details and performance parameters

Parameter Specification
Heating Element Material
Primary specification
Ferrous alloy powder metallurgical element, FeCrAl Super, SAPM, FeCrAl HTM, NiCr 80/20 & NiCr 70/30
Premium quality
Power
1 kW to 75 kW (custom)
Energy efficient
Cold Resistance Tolerance
≤3%
Max. Temperature
up to 1250°C (custom)
High performance
Voltage
Up to 480V AC (custom)
Watt density
Up to 5W/cm²
All specifications are subject to customization based on application requirements.
ISO 9001:2015 CE Marked RoHS Compliant

Industrial Applications

Discover how Bundle Rod Heater delivers superior performance across diverse industrial sectors

Popular

Primary aluminium holding and melting furnace

Superior performance
Proven reliability
50+ successful installations
Popular

Galvanizing furnace in steel industries

High temperature resistance
Uniform heating
67+ successful installations
Popular

Heat treatment furnace in automotive industries

Reliable performance
Quality consistency
84+ successful installations

Annealing furnace

Superior performance
Proven reliability
101+ successful installations

Carburizing furnace

Superior performance
Proven reliability
118+ successful installations

SQF(Sealed Quench Furnace)

Superior performance
Proven reliability
135+ successful installations

Trusted Across Industries

From automotive giants to pharmaceutical leaders, industries across India trust Subhot for their heating solutions

Steel & Metal

Automotive

Chemical

Food & Beverage

Pharmaceutical

Research Labs

Key Features & Benefits

Experience the superior features that make Bundle Rod Heater the preferred choice for industrial heating

Reduces CO₂ emissions by eliminating flue gases

Eco-friendly heating with zero harmful emissions.

Convenient temperature control, assembly and maintenance

Precise temperature control for consistent results.

Strong heating ability and high efficiency

High efficiency design reduces energy costs.

Horizontal or vertical mounting options

Flexible mounting options for any space.

Minimized environmental impact

Sustainable technology for environmental goals.

Longer working life and better technical properties

Durable construction for long-lasting service.

Higher surface load & resistivity

Even heat distribution across surface.

Frequently Asked Questions

Bundle Rod Heaters are engineered for high-temperature industrial applications and can operate reliably at temperatures up to 1250°C. This makes them suitable for use in heat treatment furnaces, melting furnaces, and sealed quench furnaces where consistent and uniform heating is critical. Their robust design ensures stability even under prolonged high-temperature conditions.
Our Bundle Rod Heaters are available in a wide power range from 1 kW to 75 kW. This flexibility allows industries to select the right heater based on furnace size, load requirements, and specific application needs. From small-scale laboratory furnaces to heavy-duty industrial operations, the heaters are designed to deliver optimal performance.
Yes, Bundle Rod Heaters are fully customizable. We can modify critical parameters such as dimensions, watt density, power ratings, mounting configurations, and material specifications to suit your industrial heating requirements. Whether you need heaters for aluminium holding furnaces, steel galvanizing plants, or automotive heat treatment, we provide tailor-made heating solutions.
Bundle Rod Heaters are widely used in primary aluminium industries, steel galvanizing furnaces, automotive heat treatment processes, annealing furnaces, and carburizing furnaces. Their ability to withstand high temperatures, deliver uniform heating, and operate efficiently makes them essential in metallurgical, manufacturing, and thermal processing industries.
Our Bundle Rod Heaters are built using premium materials for durability and performance. The heating elements are made from ferrous alloy powder metallurgical elements, Super FeCrAl, or NiCr 80/20. Support rods and terminals are made of SS 310 or Incoloy, while insulation components such as ceramic discs are made of high-purity Alumina and fiber discs from ceramic fiber. This ensures long life and consistent operation in high-stress environments.
Yes, Bundle Rod Heaters offer flexible installation options and can be mounted in both horizontal and vertical positions. This adaptability makes them suitable for different furnace designs and space constraints, ensuring efficient utilization of heating zones without compromising performance.
Our Bundle Rod Heaters are designed with a cold resistance tolerance of ≤3%. This ensures stable electrical resistance, uniform heat output, and consistent performance throughout their operational life. Such precision helps industries maintain process accuracy in heat treatment applications.
Bundle Rod Heaters are available in standard voltage options of 240V AC and 480V AC. Custom voltage configurations can also be provided to match the electrical infrastructure of your facility. This ensures compatibility and safe integration with your furnace systems.
Bundle Rod Heaters are environmentally friendly compared to conventional combustion-based heating systems. They help reduce CO₂ emissions by eliminating flue gases, lower overall energy consumption due to higher efficiency, and minimize heat losses. This makes them an eco-conscious choice for industries aiming to adopt sustainable heating technologies.
Bundle Rod Heaters operate within a watt density range of 1 to 10 W/cm². This range provides efficient heat transfer, enhances heater lifespan, and minimizes the risk of element burnout. Selecting the appropriate watt density ensures long-term reliability for specific furnace operations.
The working life of Bundle Rod Heaters depends on operating temperature, load cycles, and maintenance practices. With proper usage, these heaters deliver a significantly longer lifespan compared to traditional heating systems, thanks to their advanced metallurgy, robust design, and resistance to high-temperature oxidation.
Yes, Bundle Rod Heaters are specifically designed for use in sealed quench furnaces and a wide range of heat treatment furnaces. The elements feature hairpin bends supported by ceramic discs, ensuring mechanical strength and reliability during continuous high-temperature operations.
Bundle Rod Heaters are designed for easy maintenance and assembly. Regular inspections of electrical connections, ceramic supports, and heating elements are recommended. Cleaning accumulated deposits, ensuring proper airflow, and checking resistance values help in extending the service life and maintaining efficient furnace performance.
The selection of a Bundle Rod Heater depends on factors such as operating temperature, furnace dimensions, required wattage, voltage compatibility, and mounting orientation. Our technical team can provide customized recommendations to ensure you get the most efficient and cost-effective solution for your heating needs.

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