Jf-800 bimetal bushing
Jf-800 bimetal bushing
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Bimetal bushing. Wrapped composite sliding bearing, Copper-plated or tin-plated steel/bronze, DIN 1494 / ISO 3547, Maintenance-free, With lubrication pockets
Bimetal bearings, specifically those with a steel backing and a bronze overlay, are engineered for high-performance applications requiring excellent load capacity, wear resistance, and durability. The outer parts of these bearings are typically made from steel (e.g., AISI 1010), providing structural strength, while the inner parts consist of a steel shell with a bronze lining, often CuPb10Sn10, which offers superior wear resistance and load-carrying capability.
Steel (C 1010) Outer Layer
AISI 1010 carbon steel is a low-carbon steel that offers a balance of strength, ductility, and ease of machining, making it suitable for the outer structure of bimetal bearings. It has a nominal carbon content of 0.10%, which contributes to its relatively low strength but allows for increased strength through quenching and tempering if necessary. This steel is commonly used in applications requiring good formability and weldability, such as cold-headed fasteners and bolts.
Bronze (CuPb10Sn10) Inner Layer
The inner layer of these bearings is made from CuPb10Sn10, a high-leaded tin bronze alloy known for its excellent wear resistance, good emergency running properties, and high wear resistance. This material is commonly found in bearings operating under moderate loads and speeds, such as in electric motors and appliances. Its composition typically includes 78-82% copper, 9-11% tin, and 8-11% lead, providing a good balance of strength, wear resistance, and conformability.
Applications and Properties
Bimetal bearings with this material combination are particularly suitable for high specific loads with oscillating motion and low frequency, and they can perform well under rough operation conditions. They are used in a variety of applications, including automotive engines, construction equipment, and industrial machinery. These bearings can handle high torque loads and are available in various forms, including cylindrical, flanged, and thrust bushings.The CuPb10Sn10 layer can be further enhanced with lubrication pockets filled with solid lubricant to reduce wear and extend the lifespan of the bearing, making it ideal for applications where regular maintenance or lubrication is difficult.
Bimetal Bearing Bushing
Bimetal bearings combining AISI 1010 steel and CuPb10Sn10 bronze offer a robust solution for applications requiring high load capacity, durability, and resistance to wear. Their design allows for operation under challenging conditions, making them a reliable choice for a wide range of industrial applications.
Bimetallic bearing bushings are produced using high-quality composite material, low carbon steel, and sintered lead-bronze alloy, which can stand high sliding rates.
JF-800 bimetal bushing is based on steel and sintered with CuPb10Sn10 or CuSn6Zn6Pb3 as a lining layer. The strongest type of bimetal bushings and widely applicated in so many fields. This type has the best performance within the range of Cu-Pb alloy constructured bushing. Thereforce it has a wide application and is mostly suitable for where is middle speed and high impact etc.
Jf-800 bimetal bushing， A much cheaper but more efficient technology than nonferrous bushes.
JF800 bimetal bearing is a steel-copper alloy product made of CuPb10Sn10 or CuSn6Zn6Pb3 sintered on the surface of low carbon steel plate as matrix material. The product is a double alloy bearing capacity of a strong, heavy truck balance bridge bushing, gasket; Driving wheel of bulldozer; Automobile steel plate bushing, all use this product.
Recommended use occasions:
It is a kind of widely used sliding bearing with high load and low speed.
Technical parameters:
- Alloy layer material: CuPb10Sn10 or CuSn6Zn6Pb3
- Large load-bearing pressure: 65N/mm2
- High operating temperature: 260℃
- The hardness of alloy layer: HB70~100
JF-800 Bimetal sliding bearings are made from bronze and steel alloy. The soft bronze inner layer can provide good lubricating performance with oil grease, hard steel back can provide good support on the whole bearing and cut down the cost.
These bearings are primarily used for bearing arrangements where heavy loads have to be supported and where rotational or oscillating movements are relatively slow.
Technical Data
| Type/Performance Index | JF-800 | JF-720 | JF-700 | JF-20 | JF-930 |
| Max Load Capacity P(N/mm²) | 150 | 130 | 120 | 100 | 150 |
| Tensile Strength(N/mm²) | 185 | 150 | 200 | 200 | 185 |
| Max Sliding Speed(Oil Lubrication)V(m/s) | 5 | 10 | 15 | 25 | 5 |
| Friction Coefficient | 0.05~0.20 | 0.06~0.16 | 0.08~0.16 | 0.08~0.17 | 0.06~0.16 |
| Max PV Value Limit(Grease) | 2.8 | 2.8 | 2.5 | – | 2.8 |
| Max PV Value Limit(Oil) | 10 | 10 | 8 | 6 | – |
Application Characteristics
| Material Trademark | Using Conditions | Use Occasions |
| JF-800 | High resistance to fatigue strenth and load capacity,with high shock resistance good wearing and good corrosion resistance. | Fit for middle load,high speed,bushes,washer and connecting rod bearing in internal combustion engine used in machinical equipment and high shock bushing. |
| JF-720 | Good resistance to fatigue strength and high load capacity,good performance of sliding,liable to be corrupted by lubricationg oil. | Middle load middle speed,principle axis of internal combustion engine. |
| JF-700 | Good resistance to fatigue strength,load capacity,shock resistance. | Principle axis of internal combustion engine, connecting rod bushing. |
| JF-20 | Good performance of anti-seizing,covering eyewinker, soft alloy be plated on working surface. | High speed, middle or low load,principle axis internal combustion engine. |
| JF-930 | Moderate fatigue strength, and load capacity, good wrrosion resistance good performance of bearing sliding. | High speed, low load, internal combustion engine half bearing,bushing used in compressing and refrigerating machine. |
Bimetal Bearing Material Characterisitc
| Material Trademark | Alloy Composition | Alloy Hardness |
| JF-800 | CuPb10Sn10 | 70~100HB |
| JF-720 | CuPb24Sn4 | 45~70HB |
| JF-700 | CuPb30 | 30~45HB |
| JF-20 | AlSn20Cu | 30~40HB |
| JF-930 | CuPb6.5P0.1 | 69~90HB |
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