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[China]
Address: Industry Park. JS, ZJ, China. 314100
Contact name:Tiffany
VIIPLUS INTERNATIONAL |
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The CuPb30 Layer Bimetal Bushing refers to a bushing made of a
bimetallic material consisting of copper (Cu) and lead (Pb) with a
Pb content of approximately 30%. This type of bushing has excellent
self-lubricating properties due to the presence of lead, which
helps reduce friction and wear during operation. Additionally, the
copper base provides good strength and conductivity, making it
suitable for various applications requiring high wear resistance
and electrical conductivity. The CuPb30 layer is typically applied
to the inner surface of the bushing, either by casting or other
metalworking techniques, to create a wear-resistant and
self-lubricating surface.
bimetal bearing with steel as backing and sintered CuPb30 as lining
layer. It has good performance in the anti-seizing shaft and
cover-up an alien substance due to the high lead composition. If
over plated certain soft alloy on the bushing, it can be used under
high speed and middle or low load,e.g.master bearing shell of the
internal combustion engine,connect-rod, and rocket arm bushing.
| Lead bronze alloy | CuPb30 | Temperature Max | 170℃ |
| Load capacity | 25N/mm² | Hardness alloy | HB30~45 |
The bimetal bushings-700 are bimetal sliding bushings with a steel
strip and sintered CuPb30 as the surface sliding layer.
These sliding bushings have good anti-locking protection and a high
proportion of lead, meaning that they can bind more dirt particles
and impurities, thereby preventing a seize-up.
| SURFACE MATERIAL | LOAD CAPACITY | RESISTANCE ALLOY RANGE | TEMPERATURE LIMIT |
|---|---|---|---|
| CuPb30 | 25 N/mm2 | HB30 HB45 | +170°C |
1. Sintered bronze powder: good abrasion resistance and excellent
bearing capacity.
2. Steel substrate: provides extremely high load-bearing capacity,
excellent heat dissipation.
3. The thickness of 0.002mm copper coating ensures good corrosion
resistance.
Max. Load P | Static | 280 N/mm2 |
Dynamic | 120 N/mm2 | |
Max. sliding speed V(m/s) | 2.5 m/s | |
Max. PV factor (N/mm2.m/s) | 2.8 N/mm2.m/s | |
Operating Temperature | Max. Greased | 150°C |
Max. Oil lubricated | 250°C | |
Coefficient of friction | Greased | 0.05~0.12μ |
Oiled | 0.04~0.12μ | |
Surface roughness (Ra) | ≤0.8 µm | |
Alloy Layer Hardness (HB) | 35-45 | |
Coeff. Of linear expansion | 19x10-6/K | |
The bimetal bushing-700 CuPb30 bimetal tractor and combine
harvester bushing is widely used in high speed and medium load
working situations, such as main motor bearing, connecting rod
bushing, rocket arm bushing and oil pump side plate etc.
Steel bearing with lead bronze lining bearing material for oil
lubricated applications. This material has a high load carrying
capacity and good fatigue properties. It is widely used in
automotive applications such as compressor, steering, power
steering, pedal bearings, kingpin bushings, tailgate pins,
mechanical handling and lifting equipment, hydraulic motors,
agricultural machinery etc.
| Chemical Compositions | |||
| Material | Alloy composition | International standard | Alloy hardness |
| Bimetal bushing 800 | JIS-LBC3/SAE-797 | CuPb10Sn10 | HB70-100 |
| Bimetal bushing720 | JIS-LBC6/SAE-799 | CuPb24Sn4 | HB45-70 |
| Bimetal bushing700 | JIS-KJ3/SAE-48 | CuPb30 | HB30-45 |
| Bimetal bushing20 | JIS-AJL/SAE-783 | AlSn20Cu | HB30-40 |
| Tech. Data | ||||
| Max. load | Static | 120N/mm2 | Alloy hardness | 240N/mm2 |
| Dynamic | 60N/mm2 | Temp. | -40°C~+250°C | |
| Max. speed (Lubricated) | 2m/s | Friction coefficient | 0.08~0.20 | |
| Max. PV | 2.8N/mm2*m/s | Thermal conductivity | 60W(m*k)-1 | |
| Breaking Load | 350N/mm2 | Coef. of thermal expansion | 14*10-6*k-1 | |
700 bimetal bearings are based on sheet steel, the surface-sintered
CuPb30Material products. The production due to the high lead
content, so both good anti-bite axis and foreign objects are
buried.
If the working surface is coated with soft alloy material, it can
be used as the main bearing of a high speed, medium and low load
internal combustion engine, connecting rod bushing and rocker arm
bushing.
