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JF Size
    Type for Bi-Metaltic Bushing Grooves and Indents
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    Lock Types for Bi-Metaltic Bushing
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    The designing of oil indentations
In order to fully lubricate the bush when in the performance, the indentations with size as follow are recommended. They should be manufactured according to the standard below if without special requirements.
Bush O.DMore than to14~2222!4440~5050~100100~180
Lubricating hole33367
The lubricating hole should be away from butt joint and loading area and designed to be easy-oil-feding as well.


    Normal thickness of the JF bimetal and their tolerances
Tolerance Thickness11.522.533.545
Thickness of steel
backing
0.611.41.92.32.83.24
Thickness of bronze
leyer
0.40.50.60.60.70.70.81.0
Manufactuable wall
thickness
1+0.25
+0.15
1.5+0.25
+0.15
2+0.25
+0.15
2.5+0.25
+0.15
3+0.25
+0.15
3.5+0.25
+0.15
4+0.25
+0.15
4+0.25
+0.15
Manufactued wall
thickness
1-0.0251.5-0.032-0.0352.5-0.043-0.0453.5-0.054-0.0554-0.06


    JF JF Bimetel Bushing chemical composition
Tolerance ThicknessJF-800JF-720JF-700JF-20
Cu余量 Remainder余量 Remainder余量 Remainder0.7~1.3
Pb9.0~11.021.0~27.026.0~33.0-
Sn9.0~11.03.0~4.50.517.5~22.5
Zn0.50.50.5-
P0.10.10.1 
Fe0.70.70.70.7
Ni0.50.50.50.1
Sb0.20.20.2-
Ai---余量 Remainder
Si---0.7
Mn---0.7
Ti---0.2
其它 Other0.50.50.50.5


    JFBimetel Bushing Physical properties
Physical propertiesJF-800JF-720JF-700JF-20
Max. static load pressure
N/mm2
150130120100
Tensile strength
N/mm2
150150200200
Max. speed(oil) m/s5101525
Friction coef(Oill)0.06~0.140.06~0.160.08~0.160.08~0.17
PV limit
N/mm2 m/s
Grease2.82.82.5-
Oil101086
Sapphire Fatigue Calss Mpa12511510585
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