Abrasion Resistance Silicon Nitride Ceramics Insulating Ceramic Roller High Durability
Custom High Toughness Silicon Nitride Ceramic Roller Si₃N₄ Cylindrical Roller Insulating Post
High‑performance silicon nitride ceramic rollers feature high fracture toughness, low density, high hardness, excellent wear‑resistance and thermal shock resistance. Good electrical insulation and corrosion‑resistant properties. Custom dimensions and precision grinding are available for bearing assemblies, machinery wear‑parts and high‑speed operating conditions.
Silicon Nitride Rolling/Insulationg Post
Our silicon nitride (Si₃N₄) ceramic rollers are advanced structural ceramic components manufactured by pressureless sintering or gas‑pressure sintering technology. Silicon nitride achieves an excellent balance of high hardness and high fracture toughness, overcoming the brittleness problem of many other ceramic materials.
Compared with steel rollers, silicon nitride ceramic rollers have much lower density, which greatly reduces centrifugal force under high‑speed rotation. It retains stable mechanical properties at elevated temperatures, res‑ists oxidation, most corrosive media and thermal shock. The material is electrically insulating and non‑magnetic, making it ideal for harsh working environments where metal parts fail quickly.
We provide standard size rollers as well as fully custom‑made products: custom diameter, length, cylindricity, surface roughness. Precision grinding and lapping are performed to achieve tight dimensional tolerances for high‑precision assembly.
Si3N4 Ceramic Parts are a man made compound synthesized through several different chemical reaction methods. they are pressed and sintered by well developed methods to produce a ceramic with a unique set of outstanding properties. The material is dark gray to black in color and can be polished to a very smooth reflective surface, giving parts with a striking appearance.
■ Superior High-temperature Stability
Main Applications:
High-temperature furnace protection tubes, thermocouple insulating sleeves, metallurgical molten metal conveying and shielding tubes, semiconductor thermal processing equipment, new energy high-temperature modules, chemical anti-corrosion piping and industrial high-temperature insulating structural parts.
Silicon Nitride Material Sheet
| Properties | Units | Silicone Nitride | |
| Mechanical | Density | gm/cc | 3.2 |
| Porosity | % | 0 | |
| Flexural Strength | Mpa | 830 | |
| Compressive Strength | Mpa | 2500 | |
| Elastic Modulus | Gpa | 310 | |
| Poisson's Ratio | / | 0.27 | |
| Hardness | kg/mm2 | 1580 | |
| Fracture Toughness KIC | Mpa *m 1/2 | 6.1 | |
| Thermal | Heat Conductivity | W/ m*k | 30 |
| Coefficient of Thermal Expansion | 10⁻⁶/K | 3.3 | |
| Specific Heat | j/kg*K | / | |
| Thermal Shock Resistance | °C | / | |
| Max UseTemperature | °C | 1400 | |
| Electrical | Dielectric Strength | ac-kv/mm | / |
| Dielectric Constant | / | 8 | |
| Loss Tangent | / | / | |
| Volume Resistivity | ohm•cm | >1014 | |
Features:
● High Hardness
Silicon nitride exhibits extremely high hardness, making it suitable for fields such as wear-resistant and cutting tools.
● Excellent Wear Resistance
Silicon nitride ceramic exhibits outstanding wear resistance, making it suitable for applications in high-wear environments.
● Superior Insulating Performance
Silicon nitride ceramic possesses excellent electrical insulation properties and chemical stability, making it widely used in the electronics and semiconductor industries.
● High Temperature Stability
It can maintain stability in high-temperature environments, making it suitable for applications like high-temperature heaters and furnaces.
Applications:
Rotating ball bearings and rollers bearings
Cutting tools
Engine components: valves, rocker arm pads, seal faces
Induction heating coil supports
Turbine blades, vanes, buckets
Welding and brazing jigs
Heating element components
Crucibles
Metal tube forming rolls and dies
TIG / Plasma welding nozzles
Weld positioners
Precision shafts and axles in high-wear environments
Thermocouple sheaths and tubes
Semiconductor process equipment
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.