Core Value: The Electric Furnace Ceramic Radiant Heater (also known as a Bobbin Heater or Ceramic Core Element) is the workhorse of heavy industrial heating. Designed to be inserted into a metal or ceramic radiant protection tube, this heater delivers massive thermal energy to furnaces and tanks through indirect radiation. Its modular segmented ceramic design allows for high flexibility and extreme durability. The key advantage is its maintenance-friendly nature: the heater core can be removed and replaced without draining the tank or cooling down the furnace completely, maximizing uptime. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE and UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS for precise resistance uniformity.
- ✓ Indirect Heating: Heating wire is protected inside a tube, preventing contact with corrosive furnace atmospheres or liquids.
- ✓ Easy Maintenance: Replace the element without draining the tank or depressurizing the system.
- ✓ High Temperature: Capable of element temperatures up to 1000°C (1832°F) for heat treatment.
- ✓ Robust Construction: High-grade Steatite or Cordierite ceramic bobbins resist thermal shock.
- ✓ Long Life: Heavy gauge NiCr 80/20 or FeCrAl wire ensures low surface load and extended lifespan.
- ✓ Versatile Installation: Suitable for horizontal or vertical mounting (with anchored wire supports).
- ✓ Reliable Quality: 30+ YEARS MANUFACTURING EXPERIENCE ensures coil pitch consistency.
- ✓ Quality Assured: UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS.
- ✓ Global Standards: CE, LVD, RoHS, ISO 9001 certified.
Technical Specifications & Performance Data
| Parameter | Standard Value | Customizable Range | Notes |
|---|---|---|---|
| Element Type | Ceramic Bobbin Heater | – | Exposed Coils on Ceramic |
| Diameter | 30mm – 120mm | Custom Sizes | Fits inside Radiant Tube |
| Length | 300mm – 3000mm | Up to 6000mm | Modular Assembly |
| Power Rating | 1kW – 15kW | Up to 50kW | High Power Capability |
| Voltage Rating | 230V / 400V / 480V | Up to 600V | 3-Phase or 1-Phase |
| Wire Material | NiCr 80/20 (Standard) | FeCrAl (Kanthal A1) | Selected by Temp Req |
| Ceramic Material | Steatite / Cordierite | High Alumina | Excellent Dielectric Strength |
| Max Temp | 800°C (Tank) / 1000°C (Furnace) | 1200°C | Element Surface Temp |
| Cold Zone | Customizable | – | Protects terminal box |
| Warranty | 1 Year Standard | Quality assured | COMPREHENSIVE QUALITY ASSURANCE |
Industrial Applications & Solutions
- Heat Treatment Furnaces: Annealing, hardening, and tempering steel. The radiant tube protects the products from combustion gases (if gas heated previously) or protects the element from carbon potential in carburizing furnaces.
- Bitumen & Oil Storage Tanks: Heating viscous fluids. The low watt density on the radiant tube surface prevents the oil from carbonizing (coking), while the heater itself runs hot and efficient.
- Industrial Ovens: Baking and curing processes. Provides large-area uniform radiation heat source.
- Zinc/Galvanizing Baths: Keeping metal molten. Ceramic heaters provide the necessary high power without direct contact with the molten metal.
- Air Heaters: Inserted into pipes for heating flowing air. The open coil design allows for good heat transfer to the air stream.
HT-Heater vs Standard Market Heaters
| Feature | HT-Heater (Factory Standard) | Cheap Market Standard | Your Advantage |
|---|---|---|---|
| Wire Support | Deep Groove Ceramics | Shallow Grooves | Prevents coil sagging/shorting |
| Wire Gauge | Heavy Gauge Wire | Thin Wire | Longer life, handles expansion |
| Ceramic Quality | High-Purity Steatite | Standard Clay | Higher thermal shock resistance |
| Assembly | Center Rod Support | Loose Stack | Rigid structure for insertion |
| Manufacturing Experience | 30+ YEARS EXPERIENCE | New factories | Proven engineering design |
| Quality Assurance | MULTIPLE RIGOROUS QUALITY CHECKS | Visual only | ZERO DEFECT DELIVERY |
Installation & Integration Guidelines
- Radiant Tube Fitment: Ensure the heater diameter is roughly 10-15mm smaller than the ID of the radiant tube to allow for easy insertion and removal after thermal expansion.
- Orientation: For horizontal installation, align the ceramic segments so the coils are supported properly. For vertical installation, ensure the heating wire is anchored to prevent it from slumping to the bottom over time.
- Terminal Box: We typically supply these heaters with a vented terminal box to keep the connections cool. Ensure the cold zone length is sufficient to pass through the furnace insulation wall.
- Replacement: Isolate power, remove the terminal cover, disconnect wires, and simply pull the ceramic core out. Insert the new one. No need to stop the main process flow in tank applications.
Customer Success Stories
Case 1: Heat Treatment Plant (Germany)
Application: Carburizing furnace for automotive gears.
Challenge: Carbon buildup was shorting out exposed heating elements.
Solution: Electric Radiant Heaters (Elements inside sealed tubes).
Results: MAINTENANCE INTERVAL INCREASED 4X. “Isolating the element from the carbon atmosphere saved us. HT-Heater UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS.”
Case 2: Bitumen Tank Farm (Canada)
Application: Maintaining asphalt temperature in winter.
Challenge: Replacing immersion heaters required draining 50,000 gallons of product.
Solution: Pipe-insert Ceramic Bobbin Heaters.
Results: REPLACEMENT TIME: 30 MINS. “We replaced a heater while the tank was full. 30+ YEARS MANUFACTURING EXPERIENCE really pays off in design.”
Case 3: Aluminum Foundry (Japan)
Application: Holding furnace temperature maintenance.
Challenge: Need consistent 700°C without dross buildup on heaters.
Solution: High-power radiant heaters in SiC tubes.
Results: CLEAN METAL & STABLE TEMP. “Excellent radiant efficiency and quality assurance.”
Pricing & Procurement Options
Standard Production: MOQ 10 pieces. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE ensures consistent quality. Discounts for 50+ units. Standard models in stock.
Lead Times: Standard: 7-10 days production. Custom: 10-15 days. Samples: 5-7 days. Rush service available for urgent requirements.
Global Logistics: Worldwide shipping via UPS, DHL, FedEx, EMS, TNT or the shipping agent as your request. Every shipment backed by 30+ YEARS MANUFACTURING EXPERIENCE.
Sample Orders: Available for testing. Contact sales for pricing. All samples UNDERGO MULTIPLE RIGOROUS QUALITY CHECKS.
Global Certifications & Compliance
- CE Marking
Conforms to European directives - LVD Compliance
Electrical safety requirements - RoHS Compliant
Environmentally safe materials - ISO 9001
Rigorous quality control processes
Quality Documentation: Certificate of Conformity and resistance test reports available. Every unit UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS before shipment.
Comprehensive After-Sales Support
Warranty: 1 Year Standard Warranty against manufacturing defects.
Technical Support: Assistance with surface load calculations and radiant tube sizing.
Service Network: BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE. Global technical support available.
Ready to Optimize Your Furnace Heating?
Next Steps:
- 📧 Request Custom Quote – Specify diameter, length, and KW
- 🔧 Free Radiant Tube Review – Ensure proper fitment
- 📦 Order Test Unit – Verify ease of replacement
- 📞 Contact Furnace Experts – Response within 2 hours
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