High quality Full Complement Balls Ceramic Plain Bearings is offered by China manufacturers Top Bearings. Buy Full Complement Balls Ceramic Plain Bearings which is of high quality directly with low price.
High quality Full Complement Balls Ceramic Plain Bearings is offered by China manufacturers Top Bearings. Buy Full Complement Balls Ceramic Plain Bearings which is of high quality directly with low price.
Material: |
Si3N4 |
Density: |
3.2 G/cm3 |
Material Of Rings & Balls: |
Full Si3N4 Ceramic Material |
HV Hardness: |
1700 HRC |
Coefficient Of Expansion: |
3.20 10^-6/℃ |
The Highest Temperature: |
1000℃ |
High Light: |
full ceramic bearings, ceramic balls for bearings |
Full Ceramic Bearings of full complement balls of Si3N4 material has an add-ball gap on its side. Because using no cage design, Full Complement Balls Of Si3N4 Ceramic Bearings is able to install more ceramic balls than the standard construction, so the heavier radial load ability could be increased more. In addition, to avoid the limited of the cage material, Full Complement Balls Of Si3N4 Ceramic Bearings has more corrosion resistance and higher temperature application than the full ceramic bearing of ceramic cage. This series of Full Complement Balls Of Si3N4 Ceramic Bearings is not for high-speed circumgyration, so the side with gap shouldn’t be installed on enduring axial load side. As there are add-balls gaps in the inner and outer rings, Full Complement Balls Of Si3N4 Ceramic Bearings couldn’t be used in more axial load application. The highest temperature of recommendation is 1000℃.
Technical data |
unit |
GCr15 |
9Cr18 |
Si3N4 |
AL203 |
ZrO2 |
Density |
g/cm³ |
7.8 |
7.9 |
3.2 |
3.95 |
6 |
a Coefficient of expansion |
10^-6/℃ |
11 |
17 |
3.2 |
9.1 |
10.5 |
E modulus of elasticity |
Gpa |
208 |
200 |
320 |
380 |
210 |
μ Poisson ratio |
0.3 |
0.3 |
0.26 |
0.27 |
0.3 |
|
HV Hardness |
800 |
700 |
1700 |
1800 |
1300 |
|
δ Flexural strength |
Mpa |
2400 |
2600 |
900 |
220 |
1000 |
δ Compressive Strength |
MPa |
2000 |
1500 |
3500 |
||
Kc Impact strength |
Nm/cm² |
20 |
25 |
7 |
3.5 |
11 |
λ Thermal conductivity |
W/mk |
30-40 |
15 |
3.5 |
25 |
2.5 |
Ω Specific resistivity |
mm²/m |
1 |
0.75 |
10^18 |
10^8 |
10^5 |
Specific heat |
J/KgK |
450 |
450 |
800 |
880 |
400 |
Application temperature |
℃ |
120 |
150 |
1000 |
1850 |
800 |
Anti-corrossion |
No |
poor |
Good |
Good |
Good |
|
Cycle stress |
10*10^6 |
10*10^6 |
50*10^6 |
30*10^6 |
50*10^6 |
|
Destroy model |
peel |
peel |
peel |
fracture |
peel/fracture |
|
Anti-magnetism |
Yes |
Yes |
No |
No |
No |
|
Dimension stability |
bad |
poor |
Good |
Good |
Good |
|
Insulate properties |
No insulation |
No insulation |
Good |
Good |
Good |
Material |
HDPE |
PP |
POM |
PA66 |
PVDF |
PPS |
PTFE |
PEEK |
Long-time working temp. |
90 |
100 |
110 |
100 |
150 |
230 |
260 |
280 |
Density |
g/cm3 |
0.91 |
1.42 |
1.14 |
1.77 |
1.35 |
2.18 |
1.32 |
Ball indentation hardness |
50 |
80 |
170 |
170 |
80 |
190 |
30 |
|
Tensile stress |
25 |
30 |
70 |
80 |
50 |
75 |
25 |
95 |
Sliding friction coefficient |
0.29 |
0.3 |
0.34 |
0.35-0.42 |
0.3 |
0.08-0.1 |
0.3-0.38 |
|
Melted temperature |
130 |
165 |
175 |
260 |
172 |
280 |
327 |
343 |
Short-time highest application temperature |
90 |
140 |
150 |
170 |
150 |
260 |
260 |
300 |
Coet of Inear expansion (10^-5/K) |
13-15 |
17 |
10 |
8 |
13 |
5 |
12 |
5 |
Dielectric constant at 1 Mhz(10^6HZ) |
2.4 |
2.25 |
3.7 |
3.6-5 |
8 |
2.1 |
3.2-3.3 |
|
Volume resisrivity (Ω·cm) |
>10^15 |
>10^24 |
>10^14 |
10^13 |
10^12 |
>10^13 |
10^14 |
10^13 |
flammability UL94 |
+ |
+ |
- |
(+) |
(+) |
- |
+ |
+ |
Anti-weathering |
- |
- |
- |
- |
- |
- |
+ |
- |
Note: + =resistant; (+) =partly resistant; - =non-resistant |