Engineered for high precision applications. A popular choice among bearing designers and other precision product applications. Silicon nitride balls are non-corrosive, anti-magnetic, and excel in low noise. Silicon nitride ball applications can be found in helicopter rotors, aircraft turbines, high speed mixers in chemical reaction vessels, machine tolling, dental drills and vacuum pumps.
| Diameter range: | 0,5 mm – 80 mm |
| Grades: | ISO 3290 G3-G20 |
| Hardness according to Vickers: | < 1600(HV10) |
| Temperature resistance: | < 1.300°C |
| Density: | 3,21 g/cm³ |
Silicon Nitride
Engineered for high precision applications, silicon nitride ceramic balls deliver unsurpassed performance in critical components such as hybrid bearings.
Specified for use in such high-technology industries as aerospace and defense, high-spec ceramic balls feature these advanced characteristics:
Lightweight Silicon Nitride weighs 60% less than steel which reduces centrifugal force, skidding and wear under high speed and acceleration.
Superior Surface Finish, Ra 0. 1 7-0.25 maximum micro inches ‘ may extend L-10 life to as much as 100 times that of steel bearings.
High Temperature Hardness is twice that of steel. These all-ceramic balls retain their strength and hardness up to 1800 degrees F.
Silicon Nitride is further characterized by its low density of 3.2 g/cc, high flexural strength of 1.0 GPa, and fracture toughness of 6 MPa/M2.
These outstanding properties, together with manufacturing standards regarding sphericity, diameter tolerance, and surface finish, make silicon nitride balls ideal for high performance ball bearings.
Material Analysis
| Material Analysis | ||
| Property/Material | Silicon Nitride | |
| Chemistry (wt%) | 87% Si3N4 13% Other |
|
| Transverse RuptureStrength (kN/mm2) | 0.85 | |
| Ultimate CompressiveStrength (kN/mm2) | 4 | |
| Ultimate TensilStrength (kN/mm2) | 0,35 | |
| Modulus ofElasticity (kN/mm2) | 310 | |
| Fracture Toughness(K1c)MPa/m | 6-8 | |