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The Material Data Sheet

Material Properties Standard Unit EPB14
Density ISO1183 g/cm3 2.13
color

Black
Max. moisture absorption at +23℃ /RH50%
ASTMD570 % <0.1
MAX. water absorption

% <0.1
Dynamic friction /steel(dry)


0.08-0.18
MAX.PV(dry)
N/mm2×m/s 0.3
Flexural modulus
ISO178 MPa 790
Flexural strength at  +23℃ ISO178 MPa 13
Compressive strength

MPa 8
MAX.static pressure of the surface,+20
MPa 8
Shore hardness
ISO868 D 65
Continuous work temperature

-200/+260
Short-time work temperature

-200/+310
Thermal conductivity
ASTME1461 W/m*k 0.25
Linear coef. of thermal expansion at +23℃ ASTMD696 K-1×10-5 12
Flammability UL94
VO
Volume resistivity IEC60093 Ωcm 1×104
Surface resistivity IEC60093 Ω 1×103


Standard bearings
  • EPB14 Plastic Plain Bearings,Metric size
  • Product code:
  • Inner diameter d1[mm]:
  • Outer diameter d2[mm]:
  • Height L[mm]:
  • Flanges outer diameter d3[mm]:
  • Flanges thickness t[mm]:
  • d1-Min.tolerance[mm]:
  • d1-Max.tolerance[mm]:
  • d2-Min.tolerance[mm]:
  • d2-Max.tolerance[mm]:
  • L-Min.tolerance[mm]:
  • L-Max.tolerance[mm]:
  • Shaft-Min.tolerance[mm]:
  • Shaft-Max.tolerance[mm]:
  • Housing-Min.tolerance[mm]:
  • Housing-Max.tolerance[mm]:

PV Value of Bearings

The max PV value of the CSB-EPB14 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 EPB14-1).

The Relation of Load, Speed and Temperature

CSB-EPB14 allows the Max static load of 8Mpa, The max compressive deformation rate under the max load is listed in Graph EPB14-2, The actual load capacity of bearing is slightly less than 8Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 2.0m/s) results into higher temperature (Tmax: 260℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB14-3 for such variation.

The Friction Factor,Wearing and shaft material

Friction Factor
The coefficient of friction decreases like the wear resistance with increasing surface speed. In contrast, a higher surface speed has less impact on the coefficient of friction of CSB-EPB14 bearing (Graph EPB14-4 and EPB14-5). From the figure EPB14-6, we could see that the friction factor is variable against the changing of shaft roughness. The recommended shaft roughness is Ra0.3~0.5.

CSB-EPB14
Dry
Grease
Oil
Water
Friction coef. μ
0.03~0.15
0.09
0.04
0.04


Wearing and shaft material

The shaft material is an important media for the bearing wearing but CSB-EPB14 is suitable for almost all kinds of shaft materials. Graph EPB14-7 shows that the wearing feature of CSB-EPB14 is excellent when the shaft material are hardened chrome steel or hardened steel. Graph EPB14-7 shows that the material CSB-EPB14 is most suitable for the rotation operation.

Chemical Resistance

Chemical Resistance of CSB-EPB14 is very good. It can work well in the heavy acid of 65%.

Water Absorbability

The water absorb rate of CSB-EPB14 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 Resistance

CSB-EPB14 can maintain its performance to be stable even exposed in the UV ray for long period.

Bearing Installation

CSB-EPB14 The Interfit Tolerance

Diameter mm
The Interfit Tolerance E10
Fit Housing H7
Fit Shaft h9
>0~3
+0.014~+0.054
0~+0.010
0~-0.025
>3~6
+0.020~+0.068
0~+0.012
0~-0.030
>6~10
+0.025~+0.083
0~+0.015
0~-0.036
>10~18
+0.032~+0.102
0~+0.018
0~-0.043
>18~30
+0.040~+0.124
0~+0.021
0~-0.052
>30~50
+0.050~+0.150
0~+0.025
0~-0.062
>50~80
+0.060~+0.180
0~+0.030
0~-0.074


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