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CSB塑料轴承产品05
CSB塑料轴承产品04
EPB6A Plastic plain bearings

Product properties

● It is a PTFE and Silicon free material widely used in the food and packing machineries. 

● Continuous working temperature: -40℃/+80℃

● No special requirement on the surface roughness

● Low friction coefficient

● Applicable for flexible shaft

● FDA grade


Material properties 

Standard

Unit

CSB-EPB6A

General properties

Color

-

-

White

Density 

ISO1183

g/cm3

1.10

Max. moisture absorption, 50%RH

ISO62

%

1.5

Max. water absorption

ISO62

%

7.6

Coefficient of sliding friction(steel)

ITS025

µ

0.10-0.40

Max. PV value

ITS026

N/mm2×m/s

0.10

Mechanical properties

Flexural modulus

ISO178

MPa

1300

Flexural strength

ISO178

MPa

55

Max. static load

ITS027

MPa

35

Max. dynamic load

ITS028

MPa

12

Shore hardness

ISO868

D

70

Physical and thermal properties

Long-term application temperature

ITS029

+80

Short-term application temperature 

ITS029

+170

Lowest application temperature

ITS029

-40

Thermal conductivity

ISO22007

W/m/K

0.23

Coefficient of thermal expansion 

ISO11359

K-1×10-5

11

Flammability

UL94

Class

HB

Electrical properties 

Volume resistance

IEC60093

Ω·cm

>1013

Surface resistance 

IEC60093

Ω

>1012

*ITS: CSB company's internal test standards.   **Test temperatures are 23℃ unless otherwise stated.

EPB6A Plastic plain bearings
Dimensions

 PV value

The max PV value of the CSB-EPB6A plastic bearings is 0.1N/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 EPB6A-1).

EPB6A_01-Plastic plain bearings PV value.jpg

▊ Load, speed and temperature

CSB-EPB6A allows the Max static load of 35Mpa, The max compressive deformation rate under the max load is listed in Graph EPB6A-2, The actual load capacity of bearing is slightly less than 35Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 0.6m/s) results into higher temperature (Tmax: 80℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB6A-3 for such variation. 

EPB6A_02-Plastic plain bearings load.jpgEPB6A_03-Plastic plain bearings load and tepmerature.jpg

▊ Friction factor, wear and shaft material

 Friction factor

CSB-EPB6A Bearing Friction factor is increased along with the increasing of the operation speed under certain loading (See Graph EPB6A-4).  The friction factor of CSB-EP3M is decreased along with the loading increasing not over 10Mpa (see Graph EPB6A-5).  The friction factor will not change much along with the speed when the loading is over 10Mpa. The Graph EPB6A-6 shows that the bearing could achieve its best performance when the counter shaft surface roughness is around Ra0.3 to Ra0.6.

CSB-EPB6A
Dry
Grease
Oil
Water
Friction coef. μ
0.10~0.40
0.09
0.04
0.04



EPB6A_04-Plastic plain bearings friction and speed.jpgEPB6A_05-Plastic plain bearings friction and load.jpgEPB6A_06-Plastic plain bearings friction and surface roughness of shaft.jpg

 Wearing and shaft material

Graph EPB6A-7 and Graph EPB6A-8 show the test results of the material CSB-EPB6A running against different shaft materials. The test result induces that the wearing is considerably affected by the different shaft materials. It is recommended to use hard chrome steel shaft for this material. Graph EPB6A-7 shows CSB-EPB6A is commonly suitable for oscillation operation but it features well for the rotation operation when the shaft material is hard chrome and it is good for oscillation operation when the shaft material is carbon steel steel.

EPB6A_07-Plastic plain bearings wear and shaft materials.jpgEPB6A_08-Plastic plain bearings wear and load.jpg

 Chemical resistance

CSB-EPB6A is good at chemical resistance against weak acidic medium and various kinds of lubricants.

 Water absorption

The moisture absorption of CSB-EPB6A plastic plain bearings is 1.5% in standard atmosphere. The max. water absorption is 7.6% in water. The application environment has to be considered due to the high water absorbtion properties.

EPB6A_09-Plastic plain bearings moisture absorption.jpg

 UV resistance

When CSB-EPB6A is exposed into the UV ray, the material performance stays stable.


▊ Installation tolerances

CSB-EPB6A Tolerances after pressfit

Diameter [mm]
CSB-EPB6A E10 [mm]
Housing H7 [mm]
Shaft h9 [mm]
>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


CSB-EPB6A Plastic Plain Bearings

Type PDF
Size 583KB
Time 09-2021
No. CSB/CAT.062E
download

1214

CSB-EPB® Plastic Bearings Finder[V2.1] is based on the analysis and calculation of a large number of test data in CSB® laboratory. You can calculations material data by entering parameters such as bearing load, speed, and temperature, and finally output material adaptation data.
Because the system calculate and analyze based on lab data, it can't exactly meet the ractual use requirements absolutly. The system data verification has certain limitations; CSB® recommends that the bearing must be tested again to verify whether it meets the actual use requirements.
CSB-EPB® Plastic Bearings Finder output data information is only for design reference, and can not be used as the final standard for determining the bearing material conformity, If you have any questions, please contact CSB® sales engineers.

CSB-SFP® Semi-finished Products Finder[V2.0] is based on the analysis and calculation of a large number of test data in CSB® laboratory. You can calculations material data by entering parameters such as bearing load, speed, and temperature, and finally output material adaptation data.
Because the system calculate and analyze based on lab data, it can't exactly meet the ractual use requirements absolutly. The system data verification has certain limitations; CSB® recommends that the products must be tested again to verify whether it meets the actual use requirements.
CSB-SFP® Semi-finished Products Finder output data information is only for design reference, and can not be used as the final standard for determining the bearing material conformity, If you have any questions, please contact CSB® sales engineers.

MediumEPB6A bearings resistance
AlcoholResistant
HydrocarbonsResistant
Greases. oilsResistant
FuelsResistant
Diluted acidsConditionally resistant
Strong acidsNot resistant
Diluted alkalisResistant
Strong alkalisConditionally resistant
CSB® Bearing Material Chemical Resistance

Please select bearing material and medium...

CSB® bearing material chemical resistance data is a comparison test result of the CSB chemistry laboratory using laboratory specimens or similar chemicals at room temperature 23 ℃, without considering the impact of other temperatures and chemical medium mixtures on the chemical resistance of CSB® bearing materials ; Therefore, this data can only act as a reference. CSB® recommends that the chemical resistance of actual parts should be tested under application conditions and verify the suitability of the bearings.

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