JDB-1U is based on CuZn24Al6 and takes oil in inner grooves to work. It can be used in low speed because of larger load, longer life and higher HB than Al-Cu bearing. Now JDB-1U is mostly used under low, middle and high load. Due to its superb high hardness, when under high load, it over performs than other JDB type. Not suitable for water, acid, alkali circumstances. Most suitable for the supporting position of hoisting machine, e.g. bulldozer supporter, hoister supporter, reeling machine supporter etc.

 Supply types: Cylinder, flange, Washer and so on. If you are interested in this product. Please send us your drawing or samples. So that we can quote you our price accurately and timely.


Material Specification
Base Material Hardness Similar Foreign Code Application conditions
CuZn24Al6Mn4 HB230~270 International
So 1338		 ASTM Germany Japan
JIS		 High Load, Low speed, Commonly used
CuZn24Al6Fe3Mn3 B30~90
 C86300		 DIN1709
 CuZn25Al5/2.0598		 H5102
 HBsC4

Base Material Component
% Cu Al Fe Mn Ni P Si Sn Zn
Normal 63 5 3 3 　 　 　 　 rest
Maximum 67 7 4 5 3 0.2 0.2 0.1 rest
Minimum 60 3 1.5 2.5 　 　 　 　 rest


Physical Characteristic
Load Capacity Friction Coef (μ) Temperature max PV Limit Speed Limit(dry) SpeedLimit (oil)
100N/mm2 <0.16 -40~300≧ 1.65N/mm2 0.4m/s 5m/s

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