EPB9 Plastic Plain Bearings

Product Details

EPB9 Plastic Plain Bearings

Self-lubricated material with good elctricity conductivity.Mainly used with the high load and electricity conductive evironment.

Continuous working temperature: -40?~130?;

Specially use for static electricity existing environment;

Suitable for low speed operation;

Higher load capacity.

The Material Data Sheet

Typical Item	Standard	Unit	CSB-EPB9
Density	ISO1183	g/cm³	1.24
Color			Black
Dynamic friction /steel(dry)			0.10-0.40
Max. PV (dry)		N/mm²×m/s	0.3
Max. roatating velocity		m/s	0.8
Max. oscillating velocity		m/s	0.6
Max. linear velocity		m/s	3.0
Tensile strength	ISO527	MPa	250
Compressive strength (Axial)		MPa	100
E-module	ISO527	MPa	11000
Max. static pressure of the surface, 20?		MPa	105
Shore hardness	ISO868	D	84
Continuous work temperature			-40/130
Short-time work temperature			-40/180
Thermal conductivity	ASTME1461	W/m×k	0.6
Linear coef. of thermal expansion	ASTMD696	K-1×10-5	11
Moisture absorption RH50/23?	ASTMD570	%	1.8
Max. water absorption, 23?		%	8.4
Flammability	UL94		HB
Volume resistivity	IEC60093	Ocm	>103
Surface resistivity	IEC60093	O	>103

PV Value of Bearings

The max PV value of the CSB-EPB9 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 EPB9-1).

The Relation of Load, Speed and Temperature

CSB-EPB9 allows the Max static load of 105Mpa, The max compressive deformation rate under the max load is listed in Graph EPB9-2, The actual load capacity of bearing is slightly less than 105Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 0.8m/s) results into higher temperature (Tmax: 130?) which decreases the load capacity of the bearing. Please refer to the Graph EPB9-3 for such variation.

The Friction Factor,Wearing and shaft material

Friction Factor
Graph EPB9-4 shows that the friction factor of CSB-EPB9 is much higher than those of other materials because the electronic conductive fiber is embedded into the bearing material. It is induced that the friction performance will be better when the bearing is lubricated. Graph EPB9-5 shows that the friction factory is decreasing along with the loading increasing and Graph EPB9-6 shows that the friction factor is increasing along with the shaft roughness increasing when the shaft roughness is between Ra0.1 to Ra0.5. This effecting will be less when the shaft roughness is between Ra0.5 to Ra1.6.

CSB-EPB9	Dry	Grease	Oil	Water
Friction coef. µ	0.10~0.40	0.09	0.04	0.04

Wearing and shaft material

Graph EPB9-7 shows the different results of the material against different shaft materials. It induces that the bearing material is good for hard chrome steel shaft under low loading operation condition and good for hardened carbon steel shaft under high loading rotation operation.

Chemical Resistance

CSB-EPB9 is good at chemical resistance against weak acidic medium and various kinds of lubricants.

Water Absorbability

The water absorb rate of CSB-EPB9 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-EPB9 is exposed into the UV ray, the material performance stays stable.

Bearing Installation

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

CSB Plastic is one of the leading China epb9 plastic plain bearings manufacturers and suppliers, and also a professional epb9 plastic plain bearings factory and company, we are always at your services.

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