軸承常用材料性能表/Comparision of bearing material technical data
性能 Technical data |
單位 |
Gcr15 |
9Cr18 |
Si3N4 |
ZrO2 |
密度 ρDensity |
g/cm3 |
7.8 |
7.9 |
3.2 |
6 |
熱膨脹 Coefficient of expansion |
10-6℃ |
11.5 |
17 |
3.0 |
10.5 |
泊松比 μ Poisson ratio |
0.3 |
0.3 |
0.26 |
0.3 |
|
彈性模量 E modulus of elastcity |
Gpa |
208 |
200 |
320 |
210 |
硬度 HV Hardness |
800 |
700 |
1700 |
1300 |
|
抗壓強度 indentation strength |
Mpa |
3600 |
2000 |
||
抗彎強度 σ Flexural strength |
Mpa |
2400 |
2600 |
900 |
1000 |
?性 Kc impact strength |
Nm/cm2 |
20 |
25 |
7 |
11 |
比電阻 Ω specific resistivity |
mm2/m |
1 |
0.7 |
1018 |
1015 |
熱導率 λ Thermal conductivity |
W/mk |
30-40 |
15 |
3.5 |
2.5 |
比熱 specific heat |
j/KgK |
450 |
450 |
800 |
400 |
使用溫度 MAX temperature |
℃ |
120 |
150 |
1000 |
800 |
耐腐蝕 anti-corrossion |
無none |
弱week |
強strong |
強strong |
|
統動接觸疲勞失效形式 Destiry Model |
剝落peel off |
剝落peel off |
剝落peel off |
剝落/斷裂peel off /break |
|
磁性Anti-magnetism |
有 none |
有 none |
無 good |
無 good |
|
尺吋穩定性 Dimension stability |
差not good |
差not good |
好good |
好good |
|
絕緣性 insulate properties |
不絕緣not good |
不絕緣not good |
好good |
好good |
常用工程塑料軸承材料性能表/Basis propertises of staple engineer plastic
材料 material |
HDPE |
PP |
POM |
PA6 |
PA66 |
PVDF |
PPS |
PTFE |
PEEK |
PI |
長時間使用溫度℃ |
90 |
100 |
110 |
100 |
100 |
150 |
230 |
240 |
260 |
300 |
密度密度 ρDensity |
0.96 |
0.91 |
1.42 |
1.13 |
1.14 |
1.7 |
1.35 |
2.2 |
1.3 |
1.35 |
拉應力 (Mpa)Tensile strength at yieid |
25 |
30 |
70 |
85 |
80 |
50 |
75 |
25 |
95 |
|
抗拉強度(Mpa)Tensile strength at break |
35 |
4.6 |
116 |
|||||||
球壓硬度(Mpa)Ball indentation headn |
50 |
80 |
170 |
160 |
170 |
80 |
190 |
30 |
||
滑動磨擦系數 |
0.29 |
0.3 |
0.34 |
0.38-0.45 |
0.35-0.42 |
0.3 |
0.08-0.1 |
0.3-0.38 |
0.3-0.38 |
|
沖擊?性(KJ/m2) |
無none |
無none |
無none |
無none |
無none |
無none |
50 |
無none |
無none |
75 |
滑動磨損(μ/km)side wear |
11 |
1.6 |
0.23 |
0.9 |
21 |
0.3-0.38 |
||||
融化溫度℃ Vicat softening temp. |
130 |
165 |
175 |
220 |
260 |
172 |
280 |
327 |
343 |
|
玻璃化轉變溫度(℃)DSC/Tg |
-95 |
-18 |
-60 |
-60 |
-72 |
-18 |
-90 |
-20 |
-143 |
|
最高使用溫度(短時間) ℃ |
90 |
140 |
150 |
160 |
170 |
150 |
260 |
260 |
300 |
350 |
線膨脹系數(10-5/K) |
13-15 |
17 |
10 |
8 |
8 |
13 |
5 |
12 |
5 |
4.9 |
介電常數(106HZ) |
2.4 |
2.3 |
3.7 |
3.7-7 |
3.6-5 |
8 |
2.1 |
3.3 |
3.1 |
|
體積電阻(Ω.cm)Volume resistivity |
＞1015 |
＞1014 |
＞1014 |
＞1013 |
＞1012 |
＞1014 |
＞1013 |
＞1016 |
＞1016 |
＞1017 |
自然風化特性Anti-weathering |
不耐 |
不耐 |
不耐 |
不耐 |
不耐 |
可耐 |
不耐 |
可耐 |
不耐 |
可耐 |
工程塑料材質對照表
PTFE |
聚四氟乙烯 |
U HMW-PE |
超高分子量聚乙烯 |
PVDF |
聚二氟乙烯 |
PPS |
聚苯硫醚 |
PEEK |
聚醚醚酮 |
PP |
聚丙烯 |
POM |
聚甲醛 |
ABS |
聚苯乙烯 |
PE |
聚乙烯 |
PA66 |
尼龍66 |
HDPE |
高密度聚乙烯 |
PA6 |
尼龍6 |
HMW-PE |
高分子量聚乙烯 |
PVC |
氟乙烯 |
各式陶瓷球/不銹鋼球/玻璃球/塑料球常用規格表
Ceramic Balls/Stainless Balls/Glass Balls/Plastic Balls size
規格(英吋) |
規格(mm) |
規格(英吋) |
規格(mm) |
2 |
3/32 |
2.382 |
|
w1/8” |
3.175 |
5/32” |
3.969 |
3/16” |
4.763 |
7/32” |
5.556 |
1/4” |
6.35 |
17/64” |
6.747 |
7 |
9/32” |
7.144 |
|
5/16” |
7.938 |
11/32” |
8.731 |
3/8” |
9.525 |
13/32” |
10.319 |
7/16” |
11.112 |
29/64” |
11.509 |
15/32” |
11.906 |
12 |
|
31/64” |
12.303 |
1/2” |
12.7 |
17/32” |
13.494 |
14 |
|
5/8” |
15.875 |
21/32” |
16.670 |
3/4” |
19.05 |
25/32” |
19.845 |
7/8” |
22.225 |
15/16” |
23.812 |
1” |
25.4 |
26.988 |
|
1-1/8” |
28.575 |
30.163 |
|
1-1/4” |
31.75 |
1-3/8” |
34.925 |
35 |
1-1/2” |
38.1 |
|
1-7/8” |
47.625 |
2” |
50.8 |