Silicon Nitride Bonded Silicon Carbide (NSiC) Roller
Silicon Nitride Bonded Silicon Carbide (NSiC) Roller
Product Overview
Our NSiC roller rods are high-performance ceramic rollers engineered for heavy-load conveying in high-temperature kilns and furnaces. Bonded with a silicon nitride (Si₃N₄) matrix, they offer superior mechanical strength, thermal shock resistance, and oxidation resistance, making them ideal for demanding continuous firing applications.
Key Properties
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Max Service Temperature: Up to 1,450°C (1,500°C intermittent)
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Excellent Thermal Shock Resistance: Withstands rapid temperature cycling without cracking
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High Load-Bearing Capacity: Superior flexural strength at elevated temperatures
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Outstanding Oxidation Resistance: Nitride bond provides long-term stability in oxidizing atmospheres
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Good Wear Resistance: Extended service life in abrasive environments
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Low Creep & Deformation: Maintains straightness and alignment over time
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Low Thermal Expansion: Minimizes stress during thermal cycling
Typical Specifications
| Parameter | Value |
|---|---|
| Bulk Density | ≥ 2.65 g/cm³ |
| Apparent Porosity | ≤ 17% |
| Flexural Strength (RT) | ≥ 80 MPa |
| Flexural Strength (1,200°C) | ≥ 70 MPa |
| Thermal Conductivity (1,000°C) | ≥ 16 W/m·K |
| CTE (RT–1,200°C) | ~5.0 × 10⁻⁶/°C |
| Max Operating Temp | 1,450°C |
Customization Options
We offer full customization to meet your specific kiln requirements:
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Diameter Range: 20mm – 80mm (custom sizes available)
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Length Range: Up to 4,000mm (longer lengths upon request)
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End Configurations: Flat, chamfered, threaded, stepped, or tapered ends
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Surface Finish: As-sintered or precision ground
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Tolerances: Tight dimensional control per your specifications
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Bore Options: Solid or hollow (with or without central bore)
Typical Applications
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Roller hearth kilns for ceramic tiles and sanitary ware
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Glass tempering and annealing lehrs
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Electronic ceramics and substrate sintering
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Battery material calcination furnaces
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Metal heat treatment and powder metallurgy lines