Bushings are mechanical components that provide a cushioning or mounting point between two parts, reducing friction and allowing movement in various applications. Several bushings are available, each designed to suit a specific purpose. Flanged bushings are mechanical components with a flange or rim at one end, which provides additional support and helps to keep the bushing in place. These bushings reduce friction and allow movement between two parts while controlling axial movement. The flange serves as a stopping point, preventing the bushing from moving too far in one direction.

Know About Flange Bushings


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Flanged Bushing Types: Explore Varieties For Every Application

Plain flanged bushing

  • This is the most basic type of flanged bushing, consisting of a cylindrical sleeve with a flange at one end. It provides support and reduces friction between moving parts. These bushings are often used in low-load and low-speed applications.
  • Industries – general machinery, automotive applications, and consumer products.

Bronze flanged bushing

  • Bronze flanged bushings are made from bronze and are known for their excellent wear resistance and compatibility with various lubricants. They are often used in applications requiring high load capacity and corrosion resistance.
  • Industries – automotive, aerospace, marine, and industrial equipment industries.

Plastic flanged bushing

  • Plastic flanged bushings are made from nylon, PTFE (Teflon), or other polymers. They are self-lubricating and can handle high speeds and various temperatures. These bushings are often used in applications where low friction and noise are essential.
  • Industries – food processing, pharmaceuticals, electronics, and automotive.

Spherical flanged bushing

  • Also known as spherical plain or spherical bearings, these bushings have a spherical inner ring designed to accommodate angular misalignment and axial loads. They are commonly used in linkage and suspension systems.
  • Industries – automotive suspension systems, agricultural machinery, and industrial equipment.

Needle roller flanged bushing

  • These bushings incorporate needle rollers to provide high load-carrying capacity in a compact design. They are used in applications with limited space and heavy radial loads.
  • Industries – automotive transmissions, heavy machinery, and industrial equipment.

Thrust flanged bushing

  • Thrust-flanged bushings are designed to handle axial loads and are often used in applications where there is movement along the axis of the shaft. They help transmit thrust forces while reducing friction.
  • Industries – automotive and aerospace industries.

Oil-impregnated flanged bushing

  • These bushings are often made from sintered metal and are impregnated with oil. They provide self-lubrication and are used in applications where continuous lubrication is challenging.
  • Industries – appliances, power tools, and small motors.

Self-lubricating flanged bushing

  • These bushings have a special lining or coating that provides lubrication, reducing the need for external lubrication. They are often used in applications where maintenance and lubrication are complex.
  • Industries – automotive steering systems, industrial machinery, and hydraulic systems.

Bimetal flanged bushing

  • Bimetal bushings have two metal layers, typically a steel backing with a bronze or other low-friction layer. They combine the strength of steel with the self-lubricating properties of the bronze layer.
  • Industries – automotive engines, construction equipment, and agricultural machinery.

Split flanged bushing

  • Split flanged bushings can be split along one side to facilitate installation and removal without disassembling other components.
  • Industries – power transmission, conveyor systems, and equipment maintenance applications.
Bronze Flanged Bushing

Sizing Options For Various Applications

  • Inside diameter (ID): This is the measurement of the inner bore of the bushing, which determines the size of the shaft or pin that will fit inside the bushing. The ID is a critical dimension for proper fit and alignment.
  • Outside diameter (OD): The outside diameter measures the flange’s outer surface or the bushing’s widest point. The OD determines the housing size or bore where the flanged bushing will be mounted.
  • Flange diameter: The flange diameter refers to measuring the circular flange at the end of the bushing. It is crucial for proper seating and support within the housing or mounting surface.
  • Flange thickness: The flange thickness measures the vertical distance from the flange’s outer edge to the bushing’s body. It affects the stability and support provided by the flange.
  • Flange width: The flange width is the horizontal measurement of the flange’s width. It contributes to the overall stability and load-bearing capacity of the flanged bushing.
  • Overall length: The length is the measurement from the back of the flange to the opposite end of the bushing. It determines how deep the bushing will be mounted into the housing or bore.
  • Bushing length: The bushing size refers to the portion of the bushing that extends beyond the flange. It affects how much the bushing is in contact with the shaft or pin.
  • Clearance and tolerance: Flanged bushings are manufactured with specific tolerances to ensure proper fit and function. These tolerances dictate the allowable deviation from the nominal dimensions and can affect the amount of play or interference between the bushing and the mating parts.
  • Material thickness: The thickness of the bushing’s body is vital for determining its load-bearing capacity and durability. Different applications may require bushings of varying material thicknesses.
  • Shaft and housing fit: Flanged bushings are designed to provide specific fits between the shaft and housing. Common fits include clearance fit (loose fit), interference fit (tight fit), and transition fit (in-between fit). The fit choice depends on factors like load, speed, and temperature.

Choosing Wisely: Select The Perfect Flanged Bushing For Optimal Performance

Their wide-ranging utility across industries underscores the significance of flanged bushings. Companies like Zetwerk hold the potential to revolutionize the procurement and supply chain process. Facilitate manufacturers by ensuring stringent quality control; they can streamline the availability of flanged bushings and other essential components.

Ultimately, selecting the right flanged bushing hinges upon a holistic understanding of the application’s requirements. Careful consideration of load-bearing capabilities, operational conditions, lubrication needs, and potential environmental challenges culminates in the optimal choice. In this manner, flanged bushings exemplify the intersection of precision engineering, material science, and practical innovation, underpinning the seamless functioning of machinery and systems across many industries.

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Flanged bushings are press-fitted into a housing or bore, with the flange positioned to prevent axial movement. The flange serves as a reference point for proper positioning during installation. Lubrication might be necessary to reduce friction and ensure smooth operation.

Flanged bushings are generally better suited for applications with lower radial and higher axial loads. Consider alternative bearing solutions, such as ball or roller bearings, if your application requires significant radial loads.

Some flanged bushings have seals or wipers to protect the bearing surface from contamination. These designs help extend the bushing’s lifespan in applications where dirt, dust, or other particulates might be present.

Metal flanged bushings can experience thermal expansion or contraction with temperature changes. Design considerations, such as proper clearance, can help accommodate these changes without compromising performance.

Yes, there are international standards and guidelines related to flanged bushings.
Some of the prominent standards organizations and documents include,
ISO (International Organization for Standardization)
ASTM International (formerly known as the American Society for Testing and Materials)
SAE International (Society of Automotive Engineers)
DIN (German Institute for Standardization)
BSI (British Standards Institution)