Metal-Polymer Composite Bearing Bush, often referred to as Bronze Bushing or Oilless Bearing, is a technologically advanced component widely used in various industrial machinery. This type of bearing is designed with a unique combination of materials and features that contribute to its high performance and low maintenance requirements.

Here’s a breakdown of its elements:

1. Metal-Polymer Composite: The metal-polymer composite design involves integrating a metal base with a polymer coating. This combination allows the bearing to have the strength and durability of metal, along with the low friction and flexibility of polymer. This results in a bearing that can withstand high loads and still operate smoothly with minimal friction.
2. Bronze Bushing: The term “bronze bushing” refers to the bronze material often used as the metal component of the composite. Bronze is known for its excellent durability, resistance to wear and corrosion, and ability to handle high loads.
3. Oilless Bearing: This is another term used to describe this type of bearing, emphasizing its self-lubricating properties. These bearings are designed with lubricant embedded within the polymer layer. This allows the bearing to continuously provide its own lubrication during operation, reducing the need for regular manual lubrication. This feature makes the bearing virtually maintenance-free and enhances its operational efficiency.

Metal-Polymer Composite Bearing Bush, or Bronze Bushing Oilless Bearing, is a high-performance and low-maintenance component. Its unique design makes it suitable for a wide range of applications in various industries, including automotive, industrial machinery, and many more.

The SF-2Y Boundary Bearings are an environmentally-friendly innovation in the realm of machine components. These bearings are a lead-free alternative developed from the established SF-2 series, featuring improvements designed to enhance their performance and longevity.

They are specifically designed for applications that require strict adherence to environmental regulations, making them ideal for industries aiming for greener operations. This makes the SF-2Y series a significant advancement in achieving sustainable and eco-friendly manufacturing.

Despite being lead-free, SF-2Y maintains the same structural integrity and functional performance as its predecessor, the SF-2. This is achieved through a combination of advanced materials and engineering design.

A key feature of these bearings is the provision of lubrication indents. These are pre-lubricated recesses that allow the bearing to work for extended periods without the need for additional oil. This not only reduces the need for regular maintenance but also contributes to their environmentally-friendly profile by reducing oil usage and potential spillage.

As such, the SF-2Y series is often referred to as a Marginal Lubricating Lead-Free Bush or Non-Lead Boundary Lubrication Bearing. These names highlight the unique features of these bearings, namely their capacity for self-lubrication and the absence of lead in their composition.

SF-2Y Boundary Bearings are a significant step forward in the pursuit of greener manufacturing. They offer high performance and durability while adhering to environmental standards, making them an ideal choice for eco-conscious industries.

The SF-2Y is a non-lead boundary lubrication bearing, which has been improved based on the SF-2X model. This bearing is specifically designed to be used in applications where lead is not permitted or desirable. It is structured in multiple layers, each contributing to its unique properties.

The layers include:

1. POM (Polyoxymethylene or Polyformaldehyde): This is the top layer of the bearing, with a thickness of about 0.3 to 0.5mm. This material is renowned for its high strength, rigidity, and resistance to wear, making it an excellent choice for bearing surfaces. It is also lead-free, conforming to stringent environmental standards. The color of this layer is typically yellow.
2. Porous Bronze (CuSn8Zn3): Underneath the POM layer is a layer of porous bronze, with a thickness ranging from 0.2 to 0.3mm. The bronze material acts as a strong and durable support for the POM layer, and its porous structure allows it to store and release lubricant as needed.
3. Steel Backing (ST12 or DC01): The steel backing gives the bearing its core strength and structural integrity. The thickness of this layer ranges from 0.4 to 2.2mm. It supports the bronze layer and provides the strength to withstand heavy loads.
4. Copper or Tin Plating: The steel backing is further coated with a thin layer of copper or tin plating (0.005 to 0.008mm thick). This layer provides additional protection against corrosion, extending the bearing’s lifespan.

the SF-2Y non-lead boundary lubrication bearing, with its specific material composition and structure, is a robust and environmentally-friendly solution for a variety of applications requiring high strength, wear resistance, and minimal maintenance.

Metal-Polymer Plain Bearings Grease Lubricated,RED color.Find more CYLINDRICAL BUSHES:www.viiplus.com

Movement applications using bearings can be found in every industry: slow and fast applications, light and heavy applications, abrasive and clean applications. Every industry has its own preference for a bearing type, for example sliding bearings, and every application in turn has its preference for specific variants such as a POM sliding bearing. Viiplus Industrie are dealers for very high quality POM sliding bearings.

Sliding layer POM with or without lubricant indents
for machining Porous Bronze Sinter Steel Back,Metric bearings and imperial bushings made to order:

Material Structure

Metal-Polymer Composite Bushing Material
Steel Back + Porous Bronze Sinter +
POM with Lubrication Indents

Characteristics