Product Details
Si₃N₄ Deep Groove Ball Bearing
Parameter characteristics
Product Details
Si₃N₄ Deep Groove Ball BearingDimensional Table
|
Bearing Model |
Overall Dimensions(mm) |
Mounting Dimensions(mm) |
Weight (kg) (Ref.) |
|||||||||
|
d |
D |
B |
r（Min） |
da（Min） |
da（Max） |
Da（Max） |
ra（Max） |
ZrO₂ |
Si₃N₄ |
plastic |
SUS |
|
|
6301 |
12 |
37 |
12 |
1 |
17 |
18 |
32 |
1 |
0.046 |
0.025 |
0.012 |
0.06 |
Product Features
Silicon Nitride (Si3N4) all-ceramic bearings have the characteristics of anti-magneticinsulation, wear-resisting and corrosion-resistant, oil-freeself-lubricating, high temperature and cold resistance and so on. Compared with zirconia (ZrO2) material, Zirconia (Zirconia) material is suitablefor higher speed and load capacity, worse working condition and higher ambient temperature. The expansion caused by temperature differencedoes not occur when the long-term service temperature is between 100℃and 800℃. At the same time can provide for high-speed high-precision high-tifnes spindle precision ceramic bearings, the highest manufacturing accuracy upto P4 to UP class. Slicon nitride full ceramicbearing rings and rolling elements are made ofsilicon nitride (Si3N4)ceramics. Polytetraazide (PTFE) is used as the standard equipment for theretainer, and GRPA66-25, PEEK, Pl, and phenolic cloth bakelite pipes are also commonly used.
Product Configuration
|
Inner And Outer Ring |
Sl3N4 ( Silicon nitride ) |
|
Cage |
PTFE ( Poly tetra fuoroethylene )、PEEK ( polyetheretherketone )、PA ( Polyamide )、UPE(Ultra-high molecular weight polyethylene)、SUS( stainless steel ) |
|
Ball |
Sl3N4 ( Silicon nitride )、SSlC ( Silicon carbide ) |
|
Seal |
Open、ZZ、2RS |
Properties of Rare Earth Ceramics
| Properties | Unit | B4C | 99A1203 | ZrA-20% | ZrO2 | Si3N4 | SIC |
| 密度density | g/cm³ | 2.4~2.51 | 3.7~3.99 | 5.5 | 6 | 3.2 | 3.2 |
| Hardness | Kg/mm | 2700~3200 | 2300~2700 | 1470~1500 | 1300~1500 | 1700~2700 | 2350~2450 |
| Bending strength | MPa | 350~400 | 300~400 | 700 | 1000~1500 | 900 | 450~800 |
| Compressive strength | MPa | 1800~2500 | 2800~3500 | 2000 | 2000 | 3500 | 2250~3000 |
| Fracture Toughness | Mpa ·m-3/2 | 6 | 2~4 | 5~6 | 11 | 7 | 4~5 |
| Weibull modulus | GPa | >7 | >10 | >15 | >15 | >6 | |
| Elastic modulus | GPa | 407 | 260 | 210 | 320 | 410 | |
| Poisson's ratio | 0.2 | 0.23 | 0.3 | 0.26 | 0.16 | ||
| Coefficient of thermal expansion | ×10-6/℃ | 4.5 | 6.5~8.6 | 9.4 | 10.5 | 3.2 | 4.3 |
| Thermal shock resistance | △T℃ | 200 | 470 | 250 | 500 | 350 | |
| Resistance | Ω/cm² | 0.3~0.8 | >10~10 | >10 | >10 | >10 | 100~2 |
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Our Capabilities
R&D Design: Scientific design analysis through CAE software. Machining: From raw materials to finished parts. Assembly and testing: Mechanized assembly system and performance testing.
Our Quality
Each component of Xuchang Jingong balanced suspension assembly is made of high-quality domestic raw materials and processed by high-quality and highly skilled employees of Xuchang Jingong.
Our Technology
The R&D center has established a functional positioning of "strengthening platform construction, cultivating core technologies; focusing on process optimization, serving production markets; focusing on user value, and leading market demand".
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