EPB17A Plastic Plain Bearings

CSB Plastic is one of the leading China epb17a plastic plain bearings manufacturers and suppliers,Website:http://www.csbbearings.com, and also a professional epb17a plastic plain bearings factory and company, we are always at your services.EPB17A Plastic Plain Bearings● The application solution for high speed and middle to low load. The wear resistance will be stable under the aforementioned application condition and good chemical resistance. When the temperature is higher than 260℃,additional location ring is neccessary.● Continuous working temperature: -200℃～260℃;● Maintenance-free dry operation;● High surface speed and middle load;● High chemical resistance.The Material Data SheetTypical ItemStandardUnitCSB-EPB17A   DensityISO1183g/cm³1.98   ColorYellow   Dynamic friction /steel(dry)0.10-0.20   Max. PV (dry)N/mm²×m/s0.3   Max. roatating velocitym/s2.0   Max. oscillating velocitym/s1.4   Max. linear velocitym/s5.0   Tensile strengthISO527MPa12   Compressive strength (Axial)MPa8   E-moduleISO527MPa800   Max. static pressure of the surface, 20℃MPa20  Shore hardnessISO868D65   Continuous work temperature℃-200/260   Short-time work temperature℃-200/310   Thermal conductivityASTME1461W/m×k0.25   Linear coef. of thermal expansionASTMD696K-1×10-510   Moisture absorption RH50/23℃ASTMD570%<0.1   Max. water absorption, 23℃%<0.1   FlammabilityUL94V0   Volume resistivityIEC60093Ωcm>1015   Surface resistivityIEC60093Ω>1015PV Value of BearingsThe max PV value of the CSB-EPB17A 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 EPB17A-1).The Relation of Load, Speed and TemperatureCSB-EPB17A allows the Max static load of 8Mpa, The max compressive deformation rate under the max load is listed in Graph EPB17A-2, The actual load capacity of bearing is slightly less than 8Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 3.0m/s) results into higher temperature (Tmax: 260℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB17A-3 for such variation.The Friction Factor,Wearing and shaft materialFriction Factor   Graph EPB17A-4 shows that the friction factor of CSBEPB17A is initially increased along with the operation speed increasing when the loading is stable but when the speed reaches over 0.25m/s, it is decreased along with the operation speed increasing. Graph EPB17A-5 shows that the friction factor of CSB-EPB17A is decreasing along with the loading increasing when the operation speed is stable. The best shaft roughness for this material is Ra0.4~0.6(Graph EPB17A-6).CSB-EPB17ADryGreaseOilWaterFriction coef. μ0.10~0.200.090.040.04Wearing and shaft materialGraph EPB17A-7 shows that the wearing speed of CSBEPB17A is similar with most of the other materials under lower loading but it will be much better when the loading is higher. It also tells that the hardened steel, hardened chrome steel or stainless steel shaft is good for CSBEPB17A bearings. Graph EPB17A-7 shows the wearing rate is less in oscillation operation than in rotation operation.Chemical ResistanceCSB-EPB17A is good at chemical resistance against weak acidic medium and various kinds of lubricants.Water AbsorbabilityThe water absorb rate of CSB-EPB17A is less than 0.1% under the atmospheric pressure while it is less than 0.1% when the material is immerged into water. The material performance and dimensions of the material is stabilized for the applications under humid environment or even in the water.UV ResistanceCSB-EPB17A can maintain its performance to be stable even exposed in the UV ray for long period.Bearing InstallationCSB-EPB17A The Interfit ToleranceDiameter mmTolerance after fit E10Fit Housing H7Fit Shaft h9>0～3+0.014～+0.0540～+0.0100～-0.025>3～6+0.020～+0.0680～+0.0120～-0.030>6～10+0.025～+0.0830～+0.0150～-0.036>10～18+0.032～+0.1020～+0.0180～-0.043>18～30+0.040～+0.1240～+0.0210～-0.052>30～50+0.050～+0.1500～+0.0250～-0.062>50～80+0.060～+0.1800～+0.0300～-0.074