CSB塑料轴承产品
banner
banner
banner
CSB塑料轴承产品05
CSB塑料轴承产品04
EPB2 Plastic plain bearings

Product properties

● The solution of middle to low load application and economic effective requirement. It is also one of the low water absorbing materials

● Continuous working temperature: -40℃/+100℃

● Suitable for medium load operation

● Maintenance-free dry operation

● For wet conditions

● Low cost material for high quantities


  Flammability

Material properties 

Standard

Unit

CSB-EPB2

General properties

Color

-

-

Olive

Density 

ISO1183

g/cm3

1.39

Max. moisture absorption, 50%RH

ISO62

%

0.2

Max. water absorption

ISO62

%

0.4

Coefficient of sliding friction(steel)

ITS025

µ

0.07-0.20

Max. PV value

ITS026

N/mm2×m/s

0.45

Mechanical properties

Flexural modulus

ISO178

MPa

2400

Flexural strength

ISO178

MPa

60

Max. static load

ITS027

MPa

50

Max. dynamic load

ITS028

MPa

19

Shore hardness

ISO868

D

72

Physical and thermal properties

Long-term application temperature

ITS029

+100

Short-term application temperature 

ITS029

+150

Lowest application temperature

ITS029

-40

Thermal conductivity

ISO22007

W/m/K

0.25

Coefficient of thermal expansion 

ISO11359

K-1×10-5

10

UL94

Class

HB


Electrical properties 

Volume resistance

IEC60093

Ω·cm

>1012

Surface resistance 

IEC60093

Ω

>1011

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

EPB2 Plastic plain bearings
Dimensions

▊ PV value

The max PV value of the CSB-EPB2 plastic bearings 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 EPB2-1).

EPB2_01-Plastic plain bearings PV value.jpg

▊ Load, speed and temperature

CSB-EPB2 allows the Max static load of 50Mpa, The max compressive deformation rate under the max load is listed in Graph EPB2-2, The actual load capacity of bearing is slightly less than 50Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 1.0m/s) results into higher temperature (Tmax: 100℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB2-3 for such variation. 

EPB2_02-Plastic plain bearings load.jpgEPB2_03-Plastic plain bearings load and tepmerature.jpg

▊ Friction factor, wear and shaft material

▊ Friction factor 

Similar with most of the plastic bearings, the friction factor of CSB-EPB2 is increased along with the operation speed when the loading is stable (see Graph EPB2-4) and is decreased along with the loading increasing when the operation speed is stable (see Graph EPB2-5).  From Graph EPB2-6, it shows the friction factor of CSB-EPB2 is variable against different shaft surface roughness. The recommended shaft surface roughness is Ra0.3~0.6.

CSB-EPB2
Dry
Grease
Oil
Water
Friction coef. μ
0.07~0.20
0.09
0.04
0.04



EPB2_04-Plastic plain bearings friction and speed.jpgEPB2_05-Plastic plain bearings friction and load.jpgEPB2_06-Plastic plain bearings friction and surface roughness of shaft.jpg

▊ Wearing and shaft material

Graph EPB2-8 shows that CSB-EPB2 is rather suitable for hardened steel shaft and hardened chrome steel shaft under lower loading andGraph EPB2-7 shows that CSB-EPB2 wearing feature is better for oscillation operation than of rotation operation.

EPB2_07-Plastic plain bearings wear and shaft materials.jpgEPB2_08-Plastic plain bearings wear and load.jpg

▊ Chemical resistance

CSB-EPB2 is good at chemical resistance against weak acidic medium and various kinds of lubricants.

▊ Water absorption

The moisture absorption of CSB-EPB2 plastic plain bearings is 0.2% in standard atmosphere. The max. water absorption is 0.4% in water . These values are very low, CSB-EPB2 plastic plain bearings are very well suited for used in wet applications.

EPB2_09-Plastic plain bearings moisture absorption.jpg

▊ UV resistance

Disintegration could be possible for the material CSB-EPB2 after long period of exposing under the UV ray and therefore the performance of the material will be reduced.


▊ Installation tolerances

CSB-EPB2 Tolerances after pressfit

Diameter [mm]
CSB-EPB2 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-EPB® Plastic Bearings 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 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.

CSB-EPB2 Plastic Plain Bearings

Type PDF
Size 585KB
Time 09-2021
No. CSB/CAT.062E
download

1023

MediumEPB2 bearings resistance
AlcoholResistant
HydrocarbonsNot resistant
Greases. oilsResistant
FuelsResistant
Diluted acidsConditionally resistant
Strong acidsNot resistant
Diluted alkalisNot resistant
Strong alkalisNot 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.

+86-400-6633-096

Product News

Customer Services

Fast Services

CSB® More products
PCB Plastic clip bearings
PCB Plastic clip bearings

The self-lubricated bearing is developed specially for the metal plate fitting. It is made with the CSB-EPB3M material which is good at shock absorbtion and wear resistance...

more
PYB Small thickness  plastic bearings
PYB Small thickness plastic bearings

Thin-walled plastic bearing for quick installation. It is made with CSB-EPB3M material wich is flexible for dimension viriation. Alternative material CSB-EPB7 is also available for special wear resistance requirement.

more
CPB Clearance-free and preloaded bearings
CPB Clearance-free and preloaded bearings

● Clearance-free and preload design
● Adjustable fitting gap
● Maintenance-free
● Shock absorbing and no noise

more
FLB Plastic flange bearings
FLB Plastic flange bearings

Suitable for the application where the CSB® plastic clip bearing is hard to be located. The requirement of the fitting hole is not critical and the set screw could be secured without any risk of moving.

more
PEW Plastic flat springs
PEW Plastic flat springs

CSB® plastic wear resistance washer. Suitable for a fitting to the uncontrollable axial space in order to reduce the vabriation and noise during the operation.

more
PPR Plastic piston rings
PPR Plastic piston rings

Wear resistance piston ring specially developed for the pneaumatic pump industrial application. It is easier to be installed comparing with the PTFE piston ring. Standard materials available are EPB13, EPB19 and so on.

more
LCB Linear clip bearings
LCB Linear clip bearings

● Made of high anti-wear material EPB13;
● Maintenance-free, self lubricating;
● Chemical resistant;
● Dust resistant and quit running;

more
KER Knife edge rollers
KER Knife edge rollers

Self-lubricating, maintenance-free Low driving force Resistant to dust...

more