EPB11 Plastic plain bearings - CSB® Plastic Bearing Technology

Product properties

● Wear resistance material with low friction factor without PTFE and Silicon. It comforms to the FDA standard and could be contacted with food directly. It is suitable for the applications in water or with the temperature under -100℃. If the working temperature is higher than 50℃, additional locating ring is neccessary

● Continuous working temperature: -100℃/+70℃

● Suitable for low load

● Low operation speed and low noise

● No PTFE and silicon, FDA grade

Material properties	Standard	Unit	CSB-EPB11
General properties
Color	-	-	White
Density	ISO1183	g/cm³	0.96
Max. moisture absorption, 50%RH	ISO62	%	0.1
Max. water absorption	ISO62	%	0.1
Coefficient of sliding friction(steel)	ITS025	µ	0.05-0.15
Max. PV value	ITS026	N/mm²×m/s	0.20
Mechanical properties
Flexural modulus	ISO178	MPa	1200
Flexural strength	ISO178	MPa	25
Max. static load	ITS027	MPa	25
Max. dynamic load	ITS028	MPa	6
Shore hardness	ISO868	D	62
Physical and thermal properties
Long-term application temperature	ITS029	℃	+70
Short-term application temperature	ITS029	℃	+100
Lowest application temperature	ITS029	℃	-100
Thermal conductivity	ISO22007	W/m/K	0.20
Coefficient of thermal expansion	ISO11359	K^-1×10^-5	19
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.

Standard products

Sleeve bearing

Flange bearing

Thrust washer

EPB11 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-EPB11 plastic bearings is 0.2N/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 EPB11-1).

EPB11_01-Plastic plain bearings PV value.jpg

▊ Load, speed and temperature

CSB-EPB11 allows the Max static load of 25Mpa, The max compressive deformation rate under the max load is listed in Graph EPB11-2, The actual load capacity of bearing is slightly less than 25Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 0.5m/s) results into higher temperature (Tmax: 70℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB11-3 for such variation.

EPB11_02-Plastic plain bearings load.jpg EPB11_03-Plastic plain bearings load and tepmerature.jpg

▊ Friction factor, wear and shaft material

▊ Friction factor

Graph EPB11-4 and Graph EPB11-5 shows that the friction factor of CSB-EPB11 is not considerably variable against the changing of the loading and operation speed because there is no Fluorine and Silicon in this material and therefore its low friction feature is completely depended on the material Features. Graph EPB11-6 shows that the friction factor of CSB-EPB11 is sensitive to the shaft roughness. The shaft roughness of Ra0.2~0.6 is recommended for the best performance of CSB-EPB11 bearings.

CSB-EPB11	Dry	Grease	Oil	Water
Friction coef. μ	0.05~0.15	0.09	0.04	0.04

EPB11_04-Plastic plain bearings friction and speed.jpg EPB11_05-Plastic plain bearings friction and load.jpg EPB11_06-Plastic plain bearings friction and surface roughness of shaft.jpg

▊ Wearing and shaft material

From the testing result to different materials shows in Graph EPB11-7 and Graph EPB11-8, it is found CSB-EPB11 is the best choice for hardened chrome steel shaft. Graph EPB11-7 tells that CSB-EPB11 is with better feature in rotation operation than in oscillation operation when the loading is lower than 6Mpa and the wearing feature of oscillation operation is better than of rotation operation when loading is higher than 6Mpa.

EPB11_07-Plastic plain bearings wear and shaft materials.jpg EPB11_08-Plastic plain bearings wear and load.jpg

▊ Chemical resistance

CSB-EPB11 is good at chemical resistance against mild base, weak acidic medium and various kinds of lubricants.

▊ Water absorption

The moisture absorption of CSB-EPB11 plastic plain bearings is 0.1% in standard atmosphere. The max. water absorption is 0.1% in water. These values are very low, CSB-EPB11 plastic palin bearings is very well suited for used in water.

▊ UV resistance

The material performance of CSB-EPB11 will be lowered if it is exposed in the UV ray for long period.

▊ Installation tolerances

CSB-EPB11 Tolerances after pressfit

Diameter [mm]	CSB-EPB11 D11 [mm]	Housing H7 [mm]	Shaft h9 [mm]
>0～3	+0.020～+0.080	0～+0.010	0～-0.025
>3～6	+0.030～+0.105	0～+0.012	0～-0.030
>6～10	+0.040～+0.130	0～+0.015	0～-0.036
>10～18	+0.050～+0.160	0～+0.018	0～-0.043
>18～30	+0.065～+0.195	0～+0.021	0～-0.052
>30～50	+0.080～+0.240	0～+0.025	0～-0.062
>50～80	+0.100～+0.290	0～+0.030	0～-0.074

CSB-EPB11 Plastic Plain Bearings

Type PDF

Size 575KB

Time 09-2021

No. CSB/CAT.062E

download

1452

工程塑料轴承查找器 — CSB-EPB®

CSB-EPB® Plain bearings finder V2.1

view tools

▊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.

自润滑半成品查询器 — CSB-SFP®

CSB-SFP® Semi-finished Products Finder V2.0

view tools

▊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.

Medium	EPB11 bearings resistance
Alcohol	Resistant
Hydrocarbons	Resistant
Greases. oils	Resistant
Fuels	Conditionally resistant
Diluted acids	Resistant
Strong acids	Not resistant
Diluted alkalis	Resistant
Strong alkalis	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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