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The Material Data Sheet

Material Properties Standard Unit EPB5Z
Density ISO1183 g/cm3 1.40
color

Brown
Max. moisture absorption at +23℃ /RH50%
ASTMD570 % 0.3
MAX. water absorption

% 1.1
Dynamic friction /steel(dry)


0.05-0.15
MAX.PV(dry)
N/mm2×m/s 1.0
Flexural modulus
ISO178 MPa 2500
Flexural strength at  +23℃ ISO178 MPa 90
Compressive strength

MPa 65
MAX.static pressure of the surface,+20
MPa 150
Shore hardness
ISO868 D 81
Continuous work temperature

-100/+250
Short-time work temperature

-100/+310
Thermal conductivity
ASTME1461 W/m*k 0.6
Linear coef. of thermal expansion at +23℃ ASTMD696 K-1×10-5 4
Flammability UL94
VO
Volume resistivity IEC60093 Ωcm 1×1011
Surface resistivity IEC60093 Ω 1×1011


Standard bearings
  • EPB5Z 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-EPB5Z series bearing is 1.0N/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 EPB5Z-1).

The Relation of Load, Speed and Temperature

CSB-EPB5Z allows the Max static load of 150Mpa, The max compressive deformation rate under the max load is listed in Graph EPB5Z-2, The actual load capacity of bearing is slightly less than 150Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 1.5m/s) results into higher temperature (Tmax: 250℃) which decreases the load capacity of the bearing. Please refer to the Graph EPB5Z-3 for such variation.

The Friction Factor,Wearing and shaft material

Friction Factor
Graph EPB5Z-4 shows that the friction factor of CSBEPB5Z is initially increased along with the operation speed increasing when the loading is stable but when the speed reaches over 0.2m/s, it is decreased along with the operation speed increasing. Graph EPB5Z-5 shows that the friction factor of CSB-EPB5Z is decreasing along with the loading increasing when the operation speed is stable. The best shaft roughness for this material is Ra0.4~0.7.

CSB-EPB5Z
Dry
Grease
Oil
Water
Friction coef. μ
0.05~0.15
0.09
0.04
0.04


Wearing and shaft material

Graph EPB5Z-7 and Graph EPB5Z-8 shows that the wearing speed of CSB-EPB5Z is similar with most of the other materials under lower loading but it will be much better when the loading is higher. It also tells that the hardened steel shaft is good for CSB-EPB5Z bearings. Graph EPB5Z-8 shows the wearing rate is less in oscillation operation than in rotation operation especially when the loading is over 20Mpa. Heat-treated steel shaft is recommended in rotation operation and stainless steel and hardened chrome steel shaft is recommended in oscillation operation.

Chemical Resistance

CSB-EPB5Z is good at chemical resistance against mild base, weak acidic medium and various kinds of lubricants.

Water Absorbability

The water absorb rate of CSB-EPB5Z is less than 0.3% under the atmospheric pressure while it is 1.1% when the material is immerged into water. The material performance and dimensions of the material is stabilized for the applications under humid environment.

UV Resistance

The material performance of CSB-EP5Z will be lowered if it is exposed in the UV ray for long period.

Bearing Installation

CSB-EPB5Z 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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