EPB13 Plastic Plain Bearings

CSB Plastic is one of the leading China epb13 plastic plain bearings manufacturers and suppliers,Website:http://www.csbbearings.com, and also a professional epb13 plastic plain bearings factory and company, we are always at your services.EPB13 Plastic Plain Bearings● Low friction and high wear resistance. It could maintain a good stable wear resistance and friction factor for the rotation, linear and oscilation movement. It has no critical hardness requirement to the shaft.● Continuous working temperature: -50℃～90℃;● Maintenance-free dry operation;● Small wear off amount against various shaft materials;● Lower friction;● Suitable for soft shaft;The Material Data SheetTypical ItemStandardUnitCSB-EPB13   DensityISO1183g/cm³1.48   ColorYellow   Dynamic friction /steel(dry)0.05-.015   Max. PV (dry)N/mm²×m/s0.4   Max. roatating velocitym/s1.5   Max. oscillating velocitym/s1.1   Max. linear velocitym/s8.0   Tensile strengthISO527MPa75   Compressive strength (Axial)MPa60   E-moduleISO527MPa2400   Max. static pressure of the surface, 20℃MPa35  Shore hardnessISO868D74   Continuous work temperature℃-50/90   Short-time work temperature℃-50/120   Thermal conductivityASTME1461W/m×k0.25   Linear coef. of thermal expansionASTMD696K-1×10-59   Moisture absorption RH50/23℃ASTMD570%0.2   Max. water absorption, 23℃%1.2   FlammabilityUL94HB   Volume resistivityIEC60093Ωcm>1013   Surface resistivityPV Value of BearingsThe max PV value of the CSB-EPB13 series bearing 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 EPB13-1).The Relation of Load, Speed and TemperatureCSB-EPB13 allows the Max static load of 35Mpa, The max compressive deformation rate under the max load is listed in Graph EPB13-2, The actual load capacity of bearing is slightly less than 35Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 1.5m/s) results into higher temperature (Tmax: 90℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB13-3 for such variation.The Friction Factor,Wearing and shaft materialFriction Factor  CSB-EPB13 Bearing friction factor varies only little amount along with the operation speed changing (See Graph EPB13-4). When the operation speed is relatively stable, the friction factor varies a lot while the load is less than 10Mpa (see Graph EPB13-5). At the same time, it does not vary much when the loading is greater than 10Mpa. Rough surface may result into the increasing of friction factor of the CSB-EPB13 material but when the roughness of the surface is greater than Ra0.5, the friction factor will remain relatively stable again. The recommended shaft surface roughness is Ra0.1~Ra0.4 for the CSB-EPB13 material.CSB-EPB13DryGreaseOilWaterFricton coefficientμ0.05~0.150.090.040.04Wearing and shaft materialTest of the bearing against various shaft materials shows that the material CSB-EPB13 features the best performance where the shaft material is hard chrome steel with loading less than 2Mpa. (See Graph EPB13-7). Therefore, the higher the load is increased, the wearresistance of the bearing will be better against the stainless steel shaft. Refer to Graph EPB13-8, the material CSB-EPB13 is suitable for rotation operation. Ether to be used under rotation operation or the oscillation operation, it is the best suitable material for the application against hard chrome steel shaft.Chemical ResistanceCSB-EPB13 is good at chemical resistance against mild base, weak acidic medium and various kinds of lubricants.Water AbsorbabilityThe water absorb rate of CSB-EPB13 is 0.2% under the atmospheric pressure while it is 1.2% when the material is immerged into water. With its low water absorbability, the material is suitable for humid environment applications.UV ResistanceCSB-EPB13 can maintain its color unchanged when it is exposed into the UV ray. The hardness, Compressive strength and wear resistance of the material is also stable under such condition.Bearing InstallationCSB-EPB13 The Interfit Tolerance        Diameter 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>80～120+0.072～+0.2120～+0.0350～-0.087>120～180+0.085～+0.2450～+0.0400～-0.100