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[China]
Address: Industry Park. JS, ZJ, China. 314100
Contact name:Tiffany
VIIPLUS INTERNATIONAL |
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Steel CuPb10Sn10 bimetal bearing bushes are widely used in the
connecting rods of automotive engines due to their exceptional wear
resistance and load-bearing capabilities. These bushes are composed
of a steel backing with a CuPb10Sn10 alloy overlay, which provides
superior tribological properties for engine applications.
The steel backing offers strength and rigidity, while the
CuPb10Sn10 overlay exhibits excellent sliding properties, high
fatigue strength, and good thermal conductivity. The copper-based
alloy is composed of copper, lead (Pb), and tin (Sn) in a 10% each
ratio, which provides a balance between strength, ductility, and
wear resistance.
The bimetal construction of these bearing bushes allows for the
optimal combination of material properties. The steel backing
ensures durability and rigidity, while the CuPb10Sn10 overlay
provides the necessary tribological characteristics for efficient
engine operation. This combination of materials results in a
bearing bush that can withstand the high temperatures, pressures,
and dynamic loads generated by the reciprocating motion of the
connecting rod.
In addition to their material properties, the precision
manufacturing process ensures that the bearing bushes fit precisely
into the connecting rod and crankshaft journals. This precise fit
reduces friction and wear, improving engine efficiency and
durability.
Overall, Steel CuPb10Sn10 bimetal bearing bushes are a reliable
choice for automotive engine connecting rods. Their superior wear
resistance, load-bearing capabilities, and precise fit make them
essential components for ensuring the smooth and efficient
operation of automotive engines.
For bitzer semi-hermetic compressor crankshaft bushingBIMETAL BEARINGS CUPB30 CATALOG.pdf
Bimetallic bearings to the high-quality low-carbon steel substrate, the surface of the sintered copper alloy having a low friction characteristic (CuPb10Sn10, CuPb6Sn6Zn3, CuPb24Sn4, CuPb30, AlSn20Cu, CuSn8Ni) as
a wear layer bearing copper alloy surfaces can be processed in
accordance with the use of a variety of conditions need type tank,
oil hole, oil hole, so as to fit in unsustainable fuel refueling or
difficult situations. Secondary extrusion material through the
secondary sintering can be a good bonding strength and optimum carrying capacity.
Material | Steel + CuPb10Sn10 |
Typical Application | con-rod of automobile engines, engineering, and agriculture machinery, heavy-duty construction machinery, etc. |
Max Dynamic Load | 140N/mm² |
Max Line Speed (Grease) | 2.5m/s |
Max PV Value Limit (Grease) | 2.8N/mm².m/s |
Friction Coefficient (Grease) | 0.05~0.15 |
Max Line Speed (Oil) | 5m/s |
Max PV Value (Oil) | 10N/mm².m/s |
Friction Coefficient (Oil) | 0.04~0.12 |
Max Working Temperature | Grease 150ºC, Oil 250ºC |
Mating Axis | Hardness ≥53HB, Roughness Ra=0.32~0.63 |
Alloy Layer Hardness | 60-90HB |
Thermal Conductivity | 47W/MK |
Coefficient Of Linear Expansion | 18×10-6/K |
We can also develop according to customers special request while out of this table | |
| Nominal Thickness | Tolerances+ of Series B (non-machinable) | Tolerances of Series C (non-machinable) |
| 1.0 | -0.025 | +0.25 +0.15 |
| 1.5 | -0.030 | +0.25 +0.15 |
| 2.0 | -0.035 | +0.25 +0.15 |
| 2.5 | -0.040 | +0.30 +0.15 |
| 3.0 | -0.045 | +0.30 +0.15 |
| 3.5 | -0.050 | +0.30 +0.15 |
The standard sizes are fitted with lubrication indents on the running surface. For standard bearings is normally the steel backing copper plated
to improve the corrosion resistance. The layer of lead bronze makes it possible to use these bearings
with relatively long lubrication intervals.
Bimetal-bearings can be manufactured with a thicker lead bronze layer for
applications where the bearing has to be machined after mounting.
The material of the layer can be fitted to the special needs of the
application in question.
Steel Backing and Leaded Bronze Overlay
Steel + CuPb10Sn10 with indents
| Material: | Copper plated steel backing, lead bronze layer (CuPb10Sn10) |
| Yield point: | (Rp0,2) ca 240 N/mm2 |
| Tensile strength: | (Rm) ca 350 N/mm2 |
| Hardness: | ca 90 – 110 HB |
| Friction: | Depends on the material and the performance of the layer. |
| Max speed: | 3,0 m/s |
| Temperature range: | -100 / +260 °C |
| Load | Speed |
| Ca: 240 N/mm2 | 0 m/s |
| 120 N/mm2 | 0,01 m/s |
| 40 N/mm2 | 2,0 m/s |
Rather a high load capacity.
Possibility to machine the inside diameter after mounting.
High-level thermal conductivity.
Good chemical resistance.
Wide range of temperature.
| Dry | Poor |
| Oil-lubricated | Good |
| Grease lubricated | Very Good |
| Water lubricated | Poor |
| Process fluid lubricated | Poor |
