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self lubricating bearings

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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

The following sections provide an overview of the various bushing types, their designs, and the different versions available:

  • Solid Bronze Bushings: These bushings are crafted from a solid piece of bronze, offering durability and robustness.
  • Sintered Bronze Bushings: Made through a sintering process, these bushings are porous and can be impregnated with lubricants.
  • Wrapped Bronze Bushings: Constructed by wrapping a thin layer of bronze around a backing material, these bushings are versatile and easy to install.
  • PTFE Composite Bushings: These bushings combine PTFE with other materials, providing excellent frictional properties.
  • POM Composite Bushings: Incorporating polyoxymethylene (POM), these bushings are known for their high strength and low friction.
  • PTFE Polyamide Bushings: A blend of PTFE and polyamide enhances the wear resistance and load-bearing capacity of these bushings.
  • Self-lubricating Graphite Bushing: Embedded with graphite, these bushings provide continuous lubrication, reducing maintenance needs.

Additionally, there’s an Oversized Bearing Type – Cast Bronze Bushing, which is specifically designed to accommodate larger applications and provide enhanced load-bearing capacity.

From a supplier’s perspective, there are various designs and variants of bronze bushings, including self-lubricating bronze bushings made in China, catering to a wide range of applications and industries.

Definition of a Bushing: A bushing is typically a removable cylindrical lining that serves several purposes: it can limit the size of an opening, reduce wear, or act as a guide, such as in the case of a mechanical shaft sleeve bushing part.

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We’re Your Partner From Prototyping to Production and Beyond

We provide a variety of services to assist you in creating functional prototypes and transitioning to production components. Manufacture custom parts as needed, utilizing various materials for self-lubricating bearings. Reach out to us to benefit from our expert applications engineering team’s production capabilities.

  • Industry specialists are equipped to manage your manufacturing requirements at every phase of product development.

  • Provides top-notch, on-demand self-lubricating bearings for both prototypes and production components.

  • A wide selection of materials, including bronze alloy grades and metal bearing substances, is at your disposal.

slide bearing bushing

Metal-Polymer Bearing

Bushing

 

 

Oil Impregnated Bronze Bushing

and Bearing

85%

Product Quality Index

92%

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