Product Features

● Good wear resistance material suitable for high load and oscilation motions. It is an economic solution for high load applications

● Continuous working temperature: -40℃/+135℃

● Suitable for high load operation

● Good for oscillating operation

● Good impact resistance

● Comtainment prevention ability

Material properties	Standard	Unit	CSB-EPB12
General properties
Color	-	-	Black
Density	ISO1183	g/cm³	1.32
Max. moisture absorption, 50%RH	ISO62	%	0.9
Max. water absorption	ISO62	%	4.9
Coefficient of sliding friction(steel)	ITS025	µ	0.05-0.20
Max. PV value	ITS026	N/mm²×m/s	0.55
Mechanical properties
Flexural modulus	ISO178	MPa	2200
Flexural strength	ISO178	MPa	100
Max. static load	ITS027	MPa	75
Max. dynamic load	ITS028	MPa	43
Shore hardness	ISO868	D	83
Physical and thermal properties
Long-term application temperature	ITS029	℃	+135
Short-term application temperature	ITS029	℃	+155
Lowest application temperature	ITS029	℃	-40
Thermal conductivity	ISO22007	W/m/K	0.24
Coefficient of thermal expansion	ISO11359	K^-1×10^-5	5
Flammability	UL94	Class	HB
Electrical properties
Volume resistance	IEC60093	Ω·cm	>10¹¹
Surface resistance	IEC60093	Ω	>10¹¹

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

Sleeve bearing

Flange bearing

Thrust washer

EPB12 Plastic plain bearings

Part no.:

d1 [mm]：

d2 [mm]：

L_h13 [mm]：

d3_d13 [mm]：

T [mm]：

d1-max. [mm]：

d1-min. [mm]：

d2-max. [mm]：

d2-min. [mm]：

T max. tolerance [mm]：

T min. tolerance [mm]：

Max. shaft [mm]：

Min. shaft [mm]：

Max. housing [mm]：

Min. housing [mm]：

*Lead time [wsk]：

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Dimensions

▊ PV value

The max PV value of the CSB-EPB12 plastic bearings is 0.55N/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 EPB12-1).

EPB12_01-Plastic plain bearings PV value.jpg

▊ Load, speed and temperature

CSB-EPB12 allows the Max static load of 75Mpa, The max compressive deformation rate under the max load is listed in Graph EPB12-2, The actual load capacity of bearing is slightly less than 75Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 1.0m/s) results into higher temperature (Tmax: 135℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB12-3 for such variation.

EPB12_02-Plastic plain bearings load.jpg EPB12_03-Plastic plain bearings load and tepmerature.jpg

▊ Friction factor, wear and shaft material

▊ Friction factor

Graph EPB12-4 shows that the friction factor of CSB-EPB12 is not considerably affected by the operation speed when the loading is stable. At the meantime, Graph EPB12-5 shows that the friction factor of CSB-EPB12 is not considerably affected by the loading when the operation speed is stable. This bearing is the only typical material whose friction factor is not sensitive to the operation speed and loading. Graph EPB12-6 tells that the fiction factor of CSB-EPB12 will not be affected by the shaft roughness when the shaft roughness is better than Ra0.4. The recommended Shaft roughness is Ra0.1~0.4.

CSB-EPB12	Dry	Grease	Oil	Water
Friction coef. μ	0.05~0.20	0.09	0.04	0.04

EPB12_04-Plastic plain bearings friction and speed.jpg EPB12_05-Plastic plain bearings friction and load.jpg EPB12_06-Plastic plain bearings friction and surface roughness of shaft.jpg

▊ Wearing and shaft material

Graph EPB12-7 and Graph EPB12-8 tells that CSB-EPB12 is suitable for both hard chrome steel shaft and hardened steel shaft. Graph EPB12-8 shows that the wearing feature of CSB-EPB12 is better in oscillation operation than in rotation operation. Hardened chrome steel shaft and hardened steel shaft is the better choice under oscillation operation and hardened steel shaft and hardened chrome steel shaft is the better choice under rotation operation.

EPB12_07-Plastic plain bearings wear and shaft materials.jpg EPB12_08-Plastic plain bearings wear and load.jpg

▊ Chemical resistance

CSB-EPB12 is good at chemical resistance against weak acidic medium and various kinds of lubricants.

▊ Water absorption

The moisture absorption of CSB-EPB12 plastic plain bearings is 0.9% in standard atmosphere. The max. water absorption is 4.9% in water. The application environment has to be considered due to the high water absorbtion properties.

EPB12_09-Plastic plain bearings moisture absorption.jpg

▊ UV resistance

CSB-EPB12 can become brittle and lost its impact resistance when it is exposed into UV ray for a certain period of time.

▊ Installation tolerances

CSB-EPB12 Tolerances after pressfit

Diameter [mm]	CSB-EPB12 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

Medium	EPB12 bearings resistance
Alcohol	Resistant
Hydrocarbons	Resistant
Greases. oils	Resistant
Fuels	Resistant
Diluted acids	Conditionally resistant
Strong acids	Not resistant
Diluted alkalis	Resistant
Strong alkalis	Conditionally 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.

CSB-EPB12 Plastic Plain Bearings 1866

Time 09-2021

Type PDF

No. CSB/CAT.062E

Size 586KB

1866

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CSB-EPB®

Plain bearings finder v2.1

view tools

CSB-EPB® Plain bearings finder V2.1

▊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.

Use Tools

CSB-SFP®

Semi-finished Products Finder V2.0

view tools

DURAPLAS® Semi-finished Products Finder V2.0

▊DURAPLAS® 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.
▊DURAPLAS® 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.

Use Tools

Product Features

▊ PV value

▊ Load, speed and temperature

▊ Friction factor, wear and shaft material

▊ Friction factor

▊ Wearing and shaft material

▊ Chemical resistance

▊ Water absorption

▊ UV resistance

▊ Installation tolerances

CSB-EPB®

CSB-EPB® Plain bearings finder V2.1

CSB-SFP®

DURAPLAS® Semi-finished Products Finder V2.0

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