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The Material Data Sheet

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

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

% 1.2
Dynamic friction /steel(dry)


0.05-0.20
MAX.PV(dry)
N/mm2×m/s 0.3
Flexural modulus
ISO178 MPa 2200
Flexural strength at  +23℃ ISO178 MPa 75
Compressive strength

MPa 60
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
  • EPBH 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-EPBH 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 EPBH-1).

The Relation of Load, Speed and Temperature

CSB-EPBH allows the Max static load of 30Mpa, The max compressive deformation rate under the max load is listed in Graph EPBH-2, The actual load capacity of bearing is slightly less than 30Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax:0.8m/s) results into higher temperature (Tmax:80℃) which decreases the load capacity of the bearing. Please refer to the Graph EPBH-3 for such variation.

The Friction Factor,Wearing and shaft material

Friction Factor
CSB-EPBH friction factor is not sensitive to the operation speed and bearing loading (see Graph EPBH-4 and Graph EPBH-5). The above features are the most common considerations for the bearing material selection. The friction of CSB-EPBH could be maintained at a relatively lower level so that the good wearing features are guaranteed. From the Graph EPBH-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-EPBH
Dry
Grease
Oil
Water
Friction coef.μ
0.05~0.20
0.09
0.04
0.04


Wearing and shaft material

The shaft material is an important media for the bearing wearing but CSB-EPBH is suitable for almost all kinds of shaft materials. Graph EPBH-7 and Graph EPBH-8 show that the wearing feature of CSB-EPBH is excellent when the shaft material are hardened chrome steel or hardened steel or hardened Aluminum.

Chemical Resistance

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

Water Absorbability

The water absorb rate of CSB-EPBH is 0.2% under the atmospheric pressure while it is 1.2% when the material is immerged into water. With its low water absorbability, the material is suitable for humid environment applications.

UV Resistance

CSB-EPBH can maintain its color unchanged when it is exposed into the UV ray. The hardness, Compressive strength and wear resistance of the material is also stable under such condition.

Bearing Installation

CSB-EPBH 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

“CSB”, “CSB-EPB”, “CSB-LIN”, “CSB-FWB”, “CSB-LMS”, “CSB-BAL”, “CSB-RPM”, “CSB-PEC”, “CSB-PCC”,“CSB-PCB”, “CSB-PYB”, “CSB-PEW”,“CSB-FLB”,“CSB-PPR”,“CSB-CPB”,“CSB-SRB” , “CSB-SFP”and “CSB-PRB” are legally protected trademarks in China and in case also in foreign countries.