EPB12 Plastic Plain Bearings

CSB Plastic is one of the leading China epb12 plastic plain bearings manufacturers and suppliers,Website:http://www.csbbearings.com, and also a professional epb12 plastic plain bearings factory and company, we are always at your services.EPB12 Plastic Plain Bearings● Good wear resistance material suitable for high load and oscilation motions. It is an economic solution for high load applications.● Continuous working temperature: -40℃～130℃;● Suitable for high load operation;● Good for oscillating operation;● Good impact resistance;● Comtainment prevention ability.The Material Data SheetTypical ItemStandardUnitCSB-EPB12   DensityISO1183g/cm³1.40   ColorBlack  Dynamic friction /steel(dry)0.05-.020  Max. PV (dry)N/mm²×m/s0.6  Max. roatating velocitym/s1.0   Max. oscillating velocitym/s0.7   Max. linear velocitym/s5.0   Tensile strengthISO527MPa115   Compressive strength (Axial)MPa95   E-moduleISO527MPa4300   Max. static pressure of the surface, 20℃MPa100  Shore hardnessISO868D83   Continuous work temperature℃-40/130   Short-time work temperature℃-40/170   Thermal conductivityASTME1461W/m×k0.25   Linear coef. of thermal expansionASTMD696K-1×10-55   Moisture absorption RH50/23℃ASTMD570%0.9   Max. water absorption, 23℃%4.9   FlammabilityUL94HB   Volume resistivityIEC60093Ωcm>1015   Surface resistivityIEC60093Ω>1012PV Value of BearingsThe max PV value of the CSB-EPB12 series bearing is 0.6N/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 EPB12-1).Relation of Load, Speed and TemperatureCSB-EPB12 allows the Max static load of 100Mpa, The max compressive deformation rate under the max load is listed in Graph EPB12-2, The actual load capacity of bearing is slightly less than 100Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 1.0m/s) results into higher temperature (Tmax: 130℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB12-3 for such variation.The Friction Factor,Wearing and shaft materialFriction Factor  Graph EPB12-4 shows that the friction factor of CSBEPB12 is not considerably affected by the operation speed when the loading is stable. At the meantime, Graph EPB12-5 shows that the friction factor of CSBEPB12 is not considerably affected by the loading when the operation speed is stable. This bearing is the only typical material whose friction factor is not sensitive to the operation speed and loading. Graph EPB12-6 tells that the fiction factor of CSB-EPB12 will not be affected by the shaft roughness when the shaft roughness is better than Ra0.4. The recommended ShaftCSB-EPB12DryGreaseOilWaterFriction coef. μ0.05~0.200.090.040.04Wearing and shaft materialGraph EPB12-7 and Graph EPB12-8 tells that CSBEPB16 is suitable for both hard chrome steel shaft and hardened steel shaft. Graph EPB12-8 shows that the wearing feature of CSB-EPB16 is better in oscillation operation than in rotation operation. Hardened chrome steel shaft and hardened steel shaft is the better choice under oscillation operation and hardened steel shaft and hardened chrome steel shaft is the better choice under rotation operation.Chemical ResistanceCSB-EPB12 is good at chemical resistance against weak acidic medium and various kinds of lubricants.Water AbsorbabilityThe water absorb rate of CSB-EPB12 is 0.9% under the atmospheric pressure while it is 4.9% when the material is immerged into water. The application environment has to be considered because of its water absorb properties.UV ResistanceCSB-EPB12 can become brittle and lost its impact resistance when it is exposed into UV ray for a certain period of time.Bearing InstallationCSB-EPB12 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