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The Material Data Sheet

Material Properties Standard Unit EPB6
Density ISO1183 g/cm3 1.45
color

White
Max. moisture absorption at +23℃ /RH50%
ASTMD570 % 0.2
MAX. water absorption

% 1.1
Dynamic friction /steel(dry)


0.05-0.18
MAX.PV(dry)
N/mm2×m/s 0.3
Flexural modulus
ISO178 MPa 2300
Flexural strength at  +23℃ ISO178 MPa 75
Compressive strength

MPa 65
MAX.static pressure of the surface,+20
MPa 30
Shore hardness
ISO868 D 74
Continuous work temperature

-40/+80
Short-time work temperature

-40/+120
Thermal conductivity
ASTME1461 W/m*k 0.2
Linear coef. of thermal expansion at +23℃ ASTMD696 K-1×10-5 10
Flammability UL94
HB
Volume resistivity IEC60093 Ωcm 1×1012
Surface resistivity IEC60093 Ω 1×1015


Standard bearings
  • EPB6 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-EPB6A series bearing is 0.1N/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 EPB6A-1).

The Relation of Load, Speed and Temperature

CSB-EPB6A allows the Max static load of 20Mpa, The max compressive deformation rate under the max load is listed in Graph EPB6A-2, The actual load capacity of bearing is slightly less than 20Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 0.6m/s) results into higher temperature (Tmax: 80℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB6A-3 for such variation.


The Friction Factor,Wearing and shaft material

Friction Factor
CSB-EPB6A Bearing Friction factor is increased along with the increasing of the operation speed under certain loading (See Graph EPB6A-4). The friction factor of CSBEP3M is decreased along with the loading increasing not over 10Mpa (see Graph EPB6A-5). The friction factor will not change much along with the speed when the loading is over 10Mpa. The Graph EPB6A-6 shows that the bearing could achieve its best performance when the counter shaft surface roughness is around Ra0.3 to Ra0.6.

CSB-EPB6A
Dry
Grease
Oil
Water
Friction coef. μ
0.05~0.18
0.09
0.04
0.04


Wearing and shaft material

Graph EPB6A-7 and Graph EPB6A-8 show the test results of the material CSB-EPB6A running against different shaft materials. The test result induces that the wearing is considerably affected by the different shaft materials. It is recommended to use hard chrome steel shaft for this material. Graph EPB6A-8 shows CSB-EPB6A is commonly suitable for oscillation operation but it features well for the rotation operation when the shaft material is hard chrome and it is good for oscillation operation when the shaft material is carbon steel steel.

Chemical Resistance

CSB-EPB6A is good at chemical resistance against weak acidic medium and various kinds of lubricants.

Water Absorbability

The water absorb rate of CSB-EPB6A is 1.5% under the atmospheric pressure while it is 7.6% when the material is immerged into water. The application environment has to be considered because of its water absorb properties.

UV Resistance

When CSB-EPB6A is exposed into the UV ray, the material performance stays stable.

Bearing Installation

CSB-EPB6A The Interfit Tolerance

Diameter mm
Tolerance after fit 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
>80~120
+0.072~+0.212
0~+0.035
0~-0.087
>120~180
+0.085~+0.245
0~+0.040
0~-0.100

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Bearing Design System

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