Si3N4 Cylindrical Rollers Specification:
Material: SI3N4
Diameter :4mm with tolerance (0~ -0.002)
Length: 5 mm with tolerance (0~ -0.18)
Grade: G2
radius ：0.3
Silicon Nitride Material Features:
High hardness, high strength, wear resistance, corrosion resistance, high temperature(1200°), good thermal diffusivity, good thermal shock resistance(avoid the temperature changing rapidly), good insulativity, low density. The comprehensive properties are best in most of structure ceramic.
Silicon Nitride Data For Your Reference :
| Properties of Silicon Nitride (Si3N4) Ceramics | ||
| Item | Unit | Typical Values |
| Physical Properties | ||
| Density | g/cm3 | >3.2 |
| Mechanical Properties | ||
| Rockwell Hardness | HRA90 | |
| Vickers Hardness (Hv50) | HV0.5 | >1550 |
| Modulus of Elasticity | Gpa | 290 |
| Flexural Strength | Mpa | >600 |
| Compressive Strength | Mpa | 2500 |
| Fracture toughness | Mpam1/2 | >6.0 |
| Thermal Properties | ||
| Maximum use temperature | °C | 1200 |
| Thermal Conductivity | W/(m.k) | 15-20 |
| Thermal Expansion Coefficient | 10-6/°C | >3.1 |
| Thermal Shock Resistance | T°C | 500 |
| Specific Heat Capacity | KJ/kg.K | 700 |
| Electrical Properties | ||
| Dielectric Strength | KV/mm | 1 |
| Dielectric Constant | Er | |
| Volume Resistivity at 20°C | Ω.cm | 1.0X1012 |
Application of Si3N4 Ceramic Roller :
Balls for check valves and Hybrid Ball bearing
Cylinderical rollers for Hybried Roller Bearing and Fuel Pumps
Cam Rollers for Engines and Fuel Pumps
Machinery, electronic, semiconductor, chemical, petroleum, smelt.
Specific application: Welding shaft, electronic substrate, plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.
For Ceramic Material :
We provide alumina ceramic, zirconia ceramic, silicon nitride (Si3N4) ceramic, macor (mica glass ) ceramic, aluminum nitride (AIN) ceramic, silicon carbide (SiC) ceramic, boron nitride (BN) ceramic, quartz ceramic, mullite ceramic, cordierite ceramic etc.
Request for Quotation
