Plain bearings are essential components in mechanical systems that support rotating or sliding parts. They come in different types, such as split and monolithic designs, each suited to specific applications. To enhance the performance of the bearing surface, a friction-reducing material is often applied to the inner diameter. This layer, known as the bearing lining, can be made from various materials, resulting in bimetallic or even trilayered bushings. Bearing data refers to the combined information about the bearing itself and its lining. These materials play a crucial role in determining the performance and longevity of the bearing. The primary failure mode of a bearing bush is wear, which is influenced by factors like the journal’s material, the type of bearing material used, the lubricant, and the overall operating conditions. Therefore, selecting the right bearing material is key to maximizing the service life and efficiency of sliding bearings. Common bearing materials include: 1) **Metal Materials**: Such as bearing alloys (e.g., tin-based or lead-based white metals), bronze, aluminum alloys, and zinc alloys. These materials offer good wear resistance, high plasticity, and excellent thermal conductivity, making them suitable for heavy-duty and high-speed applications. 2) **Porous Metal Materials**: Often produced through powder metallurgy, these materials have a porous structure that allows them to absorb and retain lubricating oil. When soaked in oil, they become self-lubricating, reducing the need for external lubrication and improving long-term performance. 3) **Non-Metallic Materials**: Including plastics such as phenolic resin, nylon, and PTFE. These materials provide good compressive strength, wear resistance, and self-lubricating properties. However, they tend to have poor heat dissipation, limiting their use in high-temperature environments. Bearing alloys, also known as white metals, are typically composed of tin, lead, or antimony. Their unique properties make them ideal for heavy-load and high-speed applications. They offer excellent anti-galling characteristics, oil absorption, and good running-in behavior. Porous metal materials, on the other hand, are known for their ability to hold lubricants within their structure, providing consistent and long-lasting lubrication. This makes them particularly useful in applications where maintenance is difficult or inconvenient. Plastic bearings, while not as strong as metallic ones, are lightweight, corrosion-resistant, and can operate in both oily and watery environments. Their self-lubricating nature reduces friction and wear, but their thermal conductivity is lower compared to metal options. In summary, choosing the right bearing material depends on several factors, including load, speed, temperature, and lubrication conditions. Understanding the properties and applications of different bearing materials helps ensure optimal performance and reliability in mechanical systems.
Recommended for Friends: Comments | Close Window
Refractory anchoring brick refers to have a specific shape in the industrial kiln shell or support the lining of the steel structure installed, and buried in the refractory lining of its anchoring and linking role of clay, high alumina and other refractory bricks. It has the characteristics of high strength, good resistance to scouring and high resistance to spalling.
Anchor brick for heating furnace,Coal chemical kiln anchoring bricks,Refractory anchoring bricks for heating furnac
Huixian Xinwei Refractories Co. , https://www.xinweirefractory.com