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The Material Data Sheet

Material Properties Standard Unit EPB1
Density ISO1183 g/cm3 1.51
color

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

% 0.5
Dynamic friction /steel(dry)


0.08-0.20
MAX.PV(dry)
N/mm2×m/s 0.6
Flexural modulus
ISO178 MPa 2500
Flexural strength at  +23℃ ISO178 MPa 80
Compressive strength

MPa 75
MAX.static pressure of the surface,+20
MPa 70
Shore hardness
ISO868 D 77
Continuous work temperature

-50/+110
Short-time work temperature

-50/+170
Thermal conductivity
ASTME1461 W/m*k 0.3
Linear coef. of thermal expansion at +23℃ ASTMD696 K-1×10-5 8
Flammability UL94
HB
Volume resistivity IEC60093 Ωcm 1×1014
Surface resistivity IEC60093 Ω 1×1015


Standard bearings
  • EPB1 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-EPB1 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 EPB1-1).

The Relation of Load, Speed and Temperature

CSB-EPB1 allows the Max static load of 70Mpa, The max compressive deformation rate under the max load is listed in Graph EPB1-2, The actual load capacity of bearing is slightly less than 70Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax:1.0m/s) results into higher temperature (Tmax: 110℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB1-3 for such variation.

The Friction Factor,Wearing and shaft material

Friction Factor
Graph EPB1-4 shows that as the same as most of the slide bearing materials, the friction factor of CSB-EPB1 is increasing along with the rotation speed under a certain loading while as shown in figure EPB1-5, it is decreased along with the increasing of loading when the operation speed is stable. From figure EPB1-6, it is found that the most suitable shaft roughness is Ra0.2 to Ra0.6.Smoother shaft or rougher shaft may result into friction factor increasing.

CSB-EPB1 Dry
Grease
Oil
Water
Friction coef.μ
0.08~0.20
0.09
0.04
0.04


Wearing and shaft material

Graph EPB1-7 shows the wearing is considerably affected by the shaft materials. Heat-treated steel shaft and carbon steel shaft is good for this bearing material. CSB-EPB1 is suitable for hardened chrome steel and hardened steel shaft in oscillation operation and is suitable for hardened chrome steel and hardened steel shaft in rotation operation.

Chemical Resistance

CSB-EPB1 is good at chemical resistance against weak acidic medium and various kinds of lubricants.

Water Absorbability

The water absorb rate of CSB-EPB1 is 0.2% under the atmospheric pressure while it is 0.5% when the material is immerged into water. With its low water absorbability, the material is suitable for humid environment applications.

UV Resistance

Disintegration could be possible for the material CSBEPB1 after long period of exposing under the UV ray and therefore the performance of the material will be reduced.

Bearing Installation

CSB-EPB1 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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