EPB23 Plastic plain bearings - CSB® Plastic Bearing Technology

Product properties

● High temperature and wear resistance material comforms to FDA regulation. It is suitable for the food machinery where the food is directly contacted with the material under the high temperature of 180℃

● Continuous working temperature: -100℃/+180℃

● Good wear resistance under high load

● For food industry under high temperature

● No special requirement on the surface roughness

● FDA standard

Material properties	Standard	Unit	CSB-EPB23
General properties
Color	-	-	Blue
Density	ISO1183	g/cm³	1.42
Max. moisture absorption, 50%RH	ISO62	%	0.6
Max. water absorption	ISO62	%	1.9
Coefficient of sliding friction(steel)	ITS025	µ	0.10-0.20
Max. PV value	ITS026	N/mm²×m/s	0.40
Mechanical properties
Flexural modulus	ISO178	MPa	2000
Flexural strength	ISO178	MPa	110
Max. static load	ITS027	MPa	60
Max. dynamic load	ITS028	MPa	26
Shore hardness	ISO868	D	76
Physical and thermal properties
Long-term application temperature	ITS029	℃	+180
Short-term application temperature	ITS029	℃	+210
Lowest application temperature	ITS029	℃	-100
Thermal conductivity	ISO22007	W/m/K	0.24
Coefficient of thermal expansion	ISO11359	K^-1×10^-5	8
Flammability	UL94	Class	V0
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.

Standard products

Sleeve bearing

Flange bearing

Thrust washer

EPB23 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]：

Shop now

Dimensions

▊ PV value

The max PV value of the CSB-EPB23 plastic bearings is 0.4N/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 EPB23-1).

EPB23_01-Plastic plain bearings PV value.jpg

▊ Load, speed and temperature

CSB-EPB23 allows the Max static load of 60Mpa, The max compressive deformation rate under the max load is listed in Graph EPB23-2, The actual load capacity of bearing is slightly less than 60Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 1.0m/s) results into higher temperature (Tmax: 180℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB23-3 for such variation.

EPB23_02-Plastic plain bearings load.jpg EPB23_03-Plastic plain bearings load and tepmerature.jpg

▊ Friction factor, wear and shaft material

▊ Friction factor

CSB-EPB23 Bearing Friction factor is not so sensitive to the operation speed (see Graph EPB23-4). The friction factor is considerably decreased along with the loading increasing and it will be turned to be stable when the loading reaches 20Mpa. Graph EPB23-5 shows the friction factor of the bearing is also not sensitive to the shaft roughness but we still recommend that the roughness of the shaft should be neither too smooth nor too rough. It is recommended to keep the roughness of the shaft to be within the range of Ra0.6 to Ra0.9.

CSB-EPB23	Dry	Grease	Oil	Water
Friction coef. μ	0.10~0.20	0.09	0.04	0.04

EPB23_04-Plastic plain bearings friction and speed.jpg EPB23_05-Plastic plain bearings friction and load.jpg EPB23_06-Plastic plain bearings friction and surface roughness of shaft.jpg

▊ Wearing and shaft material

Graph EPB23-7 shows that the CSB-EPB23 material is not sensitive with different materials under the rotating operation. It is suitable for hard shaft and high speed steel shaft as well as hard chrome steel shaft. Graph EPB23-8 shows that the hard chrome steel shaft is most suitable for using CSB-EPB23 bearing because the wearing speed is not sensitive when the loading is increased. From the Graph EPB23-8, it shows that CSB-EP23 features different performance.

EPB23_07-Plastic plain bearings wear and shaft materials.jpg EPB23_08-Plastic plain bearings wear and load.jpg

▊ Chemical resistance

CSB-EPB23 is good at chemical resistance against weak acidic medium and various kinds of lubricants.

▊ Water absorption

The moisture absorption of CSB-EPB23 plastic bearings is 0.6% in standard atmosphere. The max. water absorption is 1.9% in water. These values are so low that design changes due to absorption are only necessary in extreme applications.

EPB23_09-Plastic plain bearings moisture absorption.jpg

▊ UV resistance

The color of CSB-EPB23 could be dimmed when it is exposed into the UV ray. The material performance stays stable.

▊ Installation tolerances

CSB-EPB23 bushing tolerances after pressfit

Diameter [mm]	Inner diameter F10 [mm]	Housing H7 [mm]	Shaft h9 [mm]
>0～3	+0.006～+0.046	0～+0.010	0～-0.025
>3～6	+0.010～+0.058	0～+0.012	0～-0.030
>6～10	+0.013～+0.071	0～+0.015	0～-0.036
>10～18	+0.016～+0.086	0～+0.018	0～-0.043
>18～30	+0.020～+0.104	0～+0.021	0～-0.052
>30～50	+0.025～+0.125	0～+0.025	0～-0.062
>50～80	+0.030～+0.150	0～+0.030	0～-0.074
>80～120	+0.036～+0.176	0～+0.035	0～-0.087
>120～180	+0.043～+0.203	0～+0.040	0～-0.100

工程塑料轴承查找器 — CSB-EPB®

Plain Bearings Finder

view tools

▊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.

自润滑半成品查询器 — CSB-SFP®

Rods and plates Finder

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.

CSB-EPB23 Plastic Plain Bearings

Type PDF

Size 576KB

Time 09-2021

No. CSB/CAT.062E

download

1108

Medium	EPB23 bearings resistance
Alcohol	Resistant
Hydrocarbons	Conditionally resistant
Greases. oils	Resistant
Fuels	Resistant
Diluted acids	Resistant
Strong acids	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.

+86-400-6633-096

Online Tools

Product News

Customer Services

CSB® More products

EPB5A Plastic plain bearings

Continuous working temperature: -100℃/+250℃. Suitable for high load and lovo speed operation. High load capacity at higher temperature. Good chemical resistance. FDA grade.

EPB11 Plastic plain bearings

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...

EPB6A Plastic plain bearings

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...

EPB6 Plastic plain bearings

It is a wear resistance material for working temperature lower than 80℃. The application is for the condition where the shaft hardness is not critical. The white color of the material is also commonly used...