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Bronze-based rolled bearings, as an essential mechanical component, play an irreplaceable role in the machinery industry due to their unique material characteristics and wide range of applications. Here’s a detailed introduction to bronze-based rolled bearings:
Material Characteristics
Bronze-based rolled bearings primarily use the tin bronze alloy CuSn8 as their main material, which exhibits excellent physical and chemical properties. The addition of tin enhances the alloy’s strength and hardness while maintaining adequate ductility and toughness. These material characteristics enable bronze-based rolled bearings to withstand significant loads and impacts, offering a prolonged service life.
Surface Features
The surface of bronze-based rolled bearings undergoes a rolling process, creating diamond-shaped oil pockets. These pockets are not only aesthetically pleasing but also crucial for storing grease, providing continuous lubrication during operation. This helps reduce friction between the bearing and the shaft, decreasing wear and enhancing the bearing’s operational efficiency and lifespan.
Performance Advantages
- High Fatigue Strength: Bronze-based rolled bearings exhibit excellent fatigue resistance under cyclic loads, thanks to the good elasticity and toughness of the material. This prevents fatigue fractures during prolonged operation.
- Strong Load-Bearing Capacity: Due to the high strength and hardness of the bronze alloy, these bearings can withstand significant radial and axial loads. This makes them suitable for high-load, low-speed situations like agricultural, construction, and engineering machinery.
- Good Corrosion Resistance: The bronze alloy has excellent corrosion resistance, allowing long-term use in humid and corrosive environments without significant performance degradation. This ensures stable performance in harsh conditions.
- Strong Wear Resistance: The high surface hardness of bronze-based rolled bearings provides strong wear resistance. Even under high-speed or heavy-load conditions, the bearings maintain a low wear rate, extending their service life.
Application Areas
Due to their exceptional performance features, bronze-based rolled bearings are widely used in high-load, low-speed applications such as agricultural, construction, and engineering machinery. In these fields, bearings must withstand significant loads and impacts while requiring good wear and corrosion resistance. Bronze-based rolled bearings meet these demands, providing reliable support and transmission functions for various mechanical equipment.
In summary, with their unique material properties and broad application spectrum, bronze-based rolled bearings hold a significant position in the machinery industry. As technology advances and manufacturing processes improve, the performance of these bearings will be further enhanced, offering superior service in even more sectors.
Bronze-wrapped bushings are made of entirely bronze CuSn8. Because of material properties, the working surface is rolled with diamond Indentations (standard Indentations) or stamped oil grooves according to detailed application. And it also has good Performance of anti-corrosion caused by chemicals and environments…
Lubricating hole bronze bushing is Indentations on the working surface, which Through-holes substitute. These holes will allow greater capacity to collect lubricant, which builds up a lubrication film at the start of the movement and reduce friction. It is suitable for high-load, lower-speed applications like construction, Transport, and agriculture machinery…
CuSn8 wrapped bronze bearing
Bronze Rolled Bearing Technical Data
Performance | Data | |
Maximum load | Static load | 120N/mm² |
Dynamic load | 40N/mm² | |
Line speed | 2.5m/s | |
Maximum PV value | 2.8N/mm²・m/s | |
Coefficient of friction | 0.08~0.25 | |
Operating temperature | -100℃~+200℃ | |
Thermal Conductivity | 60W/m・K | |
Thermal expansion coefficient | 15×-6/K |
Bronze Rolled Bearing Data parameter
Standard diameter Standard Dia. |
Bushing outer diameter O.D.Size |
Matching seat hole Housing Bore |
Bushing ID I.D.Size |
Matching shaft diameter Matching Shaft Diameter |
---|---|---|---|---|
10~18 | +0.065 +0.030 |
+0.018 0 |
+0.046 0 |
– 0.016 – 0.043 |
18~30 | +0.075 +0.035 |
+0.021 0 |
+0.052 0 |
– 0.020 – 0.020 |
30~50 | +0.085 +0.045 |
+0.025 0 |
+0.062 0 |
– 0.025 – 0.064 |
50~80 | +0.100 +0.055 |
+0.030 0 |
+0.074 0 |
– 0.030 – 0.076 |
80~120 | +0.120 +0.070 |
+0.035 0 |
+0.087 0 |
– 0.036 – 0.090 |
120~180 | +0.170 +0.100 |
+0.400 0 |
+0.100 0 |
– 0.043 – 0.106 |
180~250 | +0.210 +0.130 |
+0.046 0 |
+0.115 0 |
– 0.050 – 0.122 |
250~315 | +0.260 +0.170 |
+0.052 0 |
+0.130 0 |
– 0.056 – 0.137 |
Types of bronze bushings, sleeve bushing material selection
The bushing (bearing), a type of plain bearing
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