EPB9 Plastic Plain Bearings
EPB9 Plastic Plain Bearings
Self-lubricated material with good elctricity conductivity.Mainly used with the high load and electricity conductive evironment.
Continuous working temperature: -40?~130?;
Specially use for static electricity existing environment;
Suitable for low speed operation;
Higher load capacity.
The Material Data Sheet
Dynamic friction /steel(dry)
Max. PV (dry)
Max. roatating velocity
Max. oscillating velocity
Max. linear velocity
Compressive strength (Axial)
Max. static pressure of the surface, 20?
Continuous work temperature
Short-time work temperature
Linear coef. of thermal expansion
Moisture absorption RH50/23?
|Max. water absorption, 23?||%||8.4|
PV Value of Bearings
The max PV value of the CSB-EPB9 series bearing is 0.3N/ 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 EPB9-1).
The Relation of Load, Speed and Temperature
CSB-EPB9 allows the Max static load of 105Mpa, The max compressive deformation rate under the max load is listed in Graph EPB9-2, The actual load capacity of bearing is slightly less than 105Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 0.8m/s) results into higher temperature (Tmax: 130?) which decreases the load capacity of the bearing. Please refer to the Graph EPB9-3 for such variation.
The Friction Factor,Wearing and shaft material
Graph EPB9-4 shows that the friction factor of CSB-EPB9 is much higher than those of other materials because the electronic conductive fiber is embedded into the bearing material. It is induced that the friction performance will be better when the bearing is lubricated. Graph EPB9-5 shows that the friction factory is decreasing along with the loading increasing and Graph EPB9-6 shows that the friction factor is increasing along with the shaft roughness increasing when the shaft roughness is between Ra0.1 to Ra0.5. This effecting will be less when the shaft roughness is between Ra0.5 to Ra1.6.
|Friction coef. µ||0.10~0.40||0.09||0.04||0.04|
Wearing and shaft material
Graph EPB9-7 shows the different results of the material against different shaft materials. It induces that the bearing material is good for hard chrome steel shaft under low loading operation condition and good for hardened carbon steel shaft under high loading rotation operation.
CSB-EPB9 is good at chemical resistance against weak acidic medium and various kinds of lubricants.
The water absorb rate of CSB-EPB9 is 1.5% under the atmospheric pressure while it is 7.6% when the material is immerged into water. The application environment has to be considered because of its water absorb properties.
When CSB-EPB9 is exposed into the UV ray, the material performance stays stable.
Tolerance after fit E10
Fit Housing H7
Fit Shaft h9
CSB Plastic is one of the leading China epb9 plastic plain bearings manufacturers and suppliers, and also a professional epb9 plastic plain bearings factory and company, we are always at your services.