EPB15 Plastic Plain Bearings

CSB Plastic is one of the leading China epb15 plastic plain bearings manufacturers and suppliers,Website:http://www.csbbearings.com, and also a professional epb15 plastic plain bearings factory and company, we are always at your services.EPB15 Plastic Plain Bearings● Good wear resistance and with low hardness and roughness requirement for the shaft material. The wear resistance of the material will not be weekend even under the dust environment.● Continuous working temperature: -40℃～100℃;● Maintenance-free dry operation;● Small wear off amount against various shaft materials;● Lower friction;● Low water absorption.The Material Data SheetTypical ItemStandardUnitCSB-EPB15DensityISO1183g/cm³1.35ColorYellowDynamic friction /steel(dry)0.05-.015Max. PV (dry)N/mm²×m/s0.9Max. roatating velocitym/s1.5Max. oscillating velocitym/s1.1Max. linear velocitym/s8.0Tensile strengthISO527MPa130Compressive strength (Axial)MPa70E-moduleISO527MPa4000Max. static pressure of the surface, 20℃MPa70Shore hardnessISO868D77Continuous work temperature℃-40/100Short-time work temperature℃-40/180Thermal conductivityASTME1461W/m×k0.25Linear coef. of thermal expansionASTMD696K-1×10-57Moisture absorption RH50/23℃ASTMD570%1.3Max. water absorption, 23℃%0.5FlammabilityUL94HBVolume resistivityIEC60093Ωcm>1015Surface resistivityIEC60093Ω>1012PV Value of BearingsThe max PV value of the CSB-EPB15 series bearing is 0.9N/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 EPB15-1).The Relation of Load, Speed and TemperatureCSB-EPB15 allows the Max static load of 70Mpa, The max compressive deformation rate under the max load is listed in Graph EPB15-2, The actual load capacity of bearing is slightly less than 70Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 1.5m/s) results into higher temperature (Tmax: 100℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB15-3 for such variation.The Friction Factor,Wearing and shaft materialFriction Factor  Graph EPB15-4 shows that the friction factor of CSBEPB15 is not sensitive to the operation speed and Graph EPB15-5 shows that the friction factor is CSB-EPB15 is decreased along with the loading increasing and become stable when the loading is over 20Mpa. Graph EPB15-6 tells that the friction factor of CSB-EPB15 is also not sensitive to the shaft roughness but we still recommend the shaft roughness to be Ra0.3~0.6.CSB-EPB15DryGreaseOilWaterFriction coef. μ0.05~0.150.090.040.04Wearing and shaft materialGraph EPB15-7 shows that the wearing of CSB-EPB15 is sensitive to different materials under rotation operation with the loading of 2Mpa. It is suitable for hardened shaft, high speed steel shaft and hardened chrome steel shaft in the rotation operation. Hardened chrome steel shaft is the best choice for CSB-EPB15(Graph EPB15-8). The wearing will be decreased as long as the loading increasing.Chemical ResistanceCSB-EPB15 is good at chemical resistance against weak acidic medium and various kinds of lubricants.Water AbsorbabilityThe water absorb rate of CSB-EPB15 is 1.3% under the atmospheric pressure while it is 6.5% when the material is immerged into water. The application environment has to be considered because of its water absorb properties.UV ResistanceCSB-EPB15 can maintain its color unchanged when it is exposed into the UV ray. The material performance stays stable.Bearing InstallationCSB-EPB15 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>80～120+0.072～+0.2120～+0.0350～-0.087>120～180+0.085～+0.2450～+0.0400～-0.100