Ceramic Furnace Supports

Ceramic Furnace Supports are refractory structural components used to support, separate, and position shelves, setters, trays, workpieces, and fixtures during high-temperature processing. They are also commonly specified as kiln posts, ceramic support pillars, furnace spacers, or kiln furniture supports.
We manufacture custom supports from mullite, high-alumina, and high-purity alumina ceramics, with material and geometry selected according to operating temperature, mechanical load, furnace atmosphere, heating/cooling rate, and service cycle. Standard and drawing-based OEM/ODM production is available for kiln-furniture distributors, furnace manufacturers, wholesalers, and industrial processors. 

Actual specifications depend on ceramic grade, geometry, load, atmosphere, and thermal cycle. Final values are confirmed during technical evaluation.

High-Temperature Structural Stability
Mullite and alumina provide high-temperature strength and dimensional stability. Proper material selection helps maintain load-bearing performance during repeated thermal cycles.
Controlled Thermal Expansion
Mullite offers relatively low thermal expansion and good thermal-shock resistance, while alumina provides higher-temperature capability and mechanical strength. Selecting the appropriate grade helps reduce thermal-stress-related cracking.
Load-Optimized Design
Post diameter, wall thickness, contact area, height, and unsupported span all influence load distribution. We evaluate these factors when reviewing custom drawings to help match the support to the actual furnace application.
Consistent Dimensions
Controlled forming, sintering, and precision grinding help maintain repeatable dimensions. Consistent post height is particularly important for multi-layer kiln furniture because uneven supports can cause shelf tilting and non-uniform loading. 

Mullite Ceramic: Suitable for applications requiring low thermal expansion, thermal-shock resistance, and stable high-temperature performance.
High-Alumina Ceramic: Recommended where higher mechanical strength, wear resistance, electrical insulation, and temperature capability are required.
High-Purity Alumina ≥99%: Designed for demanding high-temperature applications requiring high chemical stability and resistance to aggressive furnace environments. 

Send us your 2D/3D CAD drawing, PDF, dimensions, or physical sample. We support custom solid and hollow posts, slotted structures, interlocking designs, grooves, holes, and other application-specific geometries.

For an accurate quotation, please provide:

• Ceramic grade or required Al₂O₃ content
• Operating and peak temperature
• Load per support
• Furnace atmosphere
• Heating/cooling cycle
• Dimensions and tolerances
• Required quantity

For repeat orders, approved drawings and specifications can be retained as production references to improve batch-to-batch consistency. 

Our production process includes raw-material control, forming, high-temperature sintering, precision grinding/machining, and final dimensional and visual inspection according to the approved specification.
Upon request, we can provide available COA/MDS documentation and dimensional inspection reports for qualification and purchasing review.
Products are protected with suitable internal cushioning and reinforced export cartons or fumigation-free wooden crates, depending on product size, quantity, and transportation method. Packaging is designed to reduce breakage risk during international shipment.

Industrial Applications

• Ceramic and technical ceramic firing
• Tunnel and batch kilns
• Kiln furniture systems
• Laboratory high-temperature furnaces
• Powder metallurgy and sintering
• Electronic ceramic processing
• Battery-material thermal processing
• Glass and refractory applications