Metric Bronze Bushing
DALON self-lubricating sintered bronze bushing are manufactured of pressed copper and tin powders by sintered technology and impregnated with lubricating oil and high porosity (20-25% in volume). The oil contained in the porosity provides a constant lubrication between bearing and shaft, the system does not need any additional external lubricant, allows this type of sintered bronze bushing to work under hydrodynamic conditions. which resulting in a very low friction coefficient and maintenance-free for general engineering applications.
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Product Introduction
DALON Metric Bronze Bushing PROPERTIES
|
GENERAL |
|
Unit |
Value |
|
Maximum load, p |
Static Dynamic |
N/mm2 N/mm2 |
20 10 |
|
Operating temperature |
Min Max |
°C °C |
-180 +300 |
|
Minimum density |
|
g/cm3 |
6.2 |
|
Minimum apparent porosity |
|
% |
20 |
|
Maximum sliding speed, U |
m/s |
0.1 - 6.0 * |
|
|
Maximum pU factor |
N/mm2 x m/s |
0.1 - 1.8 * |
|
|
Coefficient of friction |
|
0.05 - 0.25 * |
|
|
Surface roughness, Ra |
µm |
≤ 0.3 - ≤ 0.6 |
|
|
Surface hardness |
HB |
> 240 - > 355 |
|
DALON Metric Bronze Bushing MATERIAL STRUCTURE
|
MATERIAL CODE |
BASIC METAL |
ALLOY COMPOSITION |
|
Bronze based |
CuSn9010/ SAE841 ASTM B438-70; SintA50/CuSnPb663 |
Cu87.5~90.5,Fe1.0max,Sn9.5~10.5; CuSn663 |
Standard material specifications include: SAE 841 (CuSn9010), ASTMB 438 Grade 1 Type II,
CuSn 6-6-3, Sint B 50 & Standard impregnating oil conforms to SAE 30 specifications
Sintered Bronze and iron based self-lubricating bushings are made of two different functions:
The metallic alloy structure which supports and transfers the mechanical loads
The oil lubricant or graphite contents which separates two surfaces in relative motion and to reduce friction.
metric bronze bushing
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