Negotiable
The date of payment from buyers deliver within days
Zhejiang
Long-term effective
2018-08-03 19:42
480
Company Profile
Zhejiang CSB Plastic Bearing Technology Co.,LtdBy certification [File Integrity]
Contact: csbep(Mr.)
Email:
Telephone:
Phone:
Area: Zhejiang
Address: Zhejiang
Website: http://www.csbbearings.com/ http://csbep.sec66.com/
EPB25 Plastic Plain Bearings
Good wear resistance material under high temperature of 180 ?. Better wear resistance for the rotation application and it has no critical requirement about the shaft hardness.
Continuous working temperature: -100?~180?;
Maintenance-free dry operation;
Suitable in high load;
Lower friction.
The Material Data Sheet
Typical Item |
Standard |
Unit |
CSB-EPB25 |
Density |
ISO1183 |
g/cm³ |
1.44 |
Color |
Yellow |
||
Dynamic friction /steel(dry) |
0.08-.020 |
||
Max. PV (dry) |
N/mm²×m/s |
0.45 |
|
Max. roatating velocity |
m/s |
1.30 |
|
Max. oscillating velocity |
m/s |
1.00 |
|
Max. linear velocity |
m/s |
4.00 |
|
Tensile strength |
ISO527 |
MPa |
55 |
Compressive strength (Axial) |
MPa |
60 |
|
E-module |
ISO527 |
MPa |
2200 |
Max. static pressure of the surface, 20? |
MPa |
60 |
|
Shore hardness |
ISO868 |
D |
80 |
Continuous work temperature |
-100/180 |
||
Short-time work temperature |
-100/210 |
||
Thermal conductivity |
ASTME1461 |
W/m×k |
0.24 |
Linear coef. of thermal expansion |
ASTMD696 |
K-1×10-5 |
7 |
Moisture absorption RH50/23? |
ASTMD570 |
% |
0.3 |
Max. water absorption, 23? | % | 1.6 | |
Flammability |
UL94 |
V0 |
|
Volume resistivity |
IEC60093 |
Ocm |
>1013 |
Surface resistivity |
IEC60093 |
O |
>1010 |
PV Value of Bearings
The max PV value of the CSB-EPB25 series bearing is 0.45N/mm2*m/s which determines the load capacity of bearing is inversely proportional to the speed. Please refer to the chart for more detailed information (Graph EPB25-1).
The Relation of Load, Speed and Temperature
CSB-EPB25 allows the Max static load of 60Mpa, The max compressive deformation rate under the max load is listed in Graph EPB25-2, The actual load capacity of bearing is slightly less than 60Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 1.3m/s) results into higher temperature (Tmax: 180?) which decreases the load capacity of the bearing. Please refer to the Graph EPB25-3 for such variation.
The Friction Factor,Wearing and shaft material
Friction Factor
Graph EPB25-4 shows that the friction factor of CSBEPB25 is not sensitive to the operation speed and Graph EPB25-5 shows that the friction factor is CSB-EPB25 is decreased along with the loading increasing and become stable when the loading is over 20Mpa. Graph EPB25-6 tells that the friction factor of CSB-EPB25 is also not sensitive to the shaft roughness but we still recommend the shaft roughness to be Ra0.7~0.9.
CSB-EPB25 |
Dry |
Grease |
Oil |
Water |
Friction coef. µ |
0.05~0.15 |
0.09 |
0.04 |
0.04 |
Wearing and shaft material
Graph EPB25-7 shows that the wearing of CSB-EPB25 is sensitive to different materials under rotation operation with the loading of 2Mpa. It is suitable for hardened shaft, high speed steel shaft and hardened chrome steel shaft in the rotation operation. Hardened chrome steel shaft is the best choice for CSB-EPB25(Graph EPB25-8). The wearing will be decreased as long as the loading increasing.
Chemical Resistance
CSB-EPB25 is good at chemical resistance against weak acidic medium and various kinds of lubricants.
Water Absorbability
The water absorb rate of CSB-EPB25 is 0.3% under the atmospheric pressure while it is 1.6% when the material is immerged into water. The application environment has to be considered because of its water absorb properties.
UV Resistance
CSB-EPB25 can maintain its color unchanged when it is exposed into the UV ray. The material performance stays stable.
Bearing Installation
CSB-EPB25 The Interfit Tolerance
Diameter mm |
Tolerance after fit E10 |
Fit Housing H7 |
Fit Shaft h9 |
>0~3 |
+0.014~+0.054 |
0~+0.010 |
0~-0.025 |
>3~6 |
+0.020~+0.068 |
0~+0.012 |
0~-0.030 |
>6~10 |
+0.025~+0.083 |
0~+0.015 |
0~-0.036 |
>10~18 |
+0.032~+0.102 |
0~+0.018 |
0~-0.043 |
>18~30 |
+0.040~+0.124 |
0~+0.021 |
0~-0.052 |
>30~50 |
+0.050~+0.150 |
0~+0.025 |
0~-0.062 |
>50~80 |
+0.060~+0.180 |
0~+0.030 |
0~-0.074 |
>80~120 |
+0.072~+0.212 |
0~+0.035 |
0~-0.087 |
>120~180 |
+0.085~+0.245 |
0~+0.040 |
0~-0.100 |
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