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Bushings are essential components in various mechanical applications, and selecting the appropriate bushing material is crucial for optimal performance and durability. Factors such as load, temperature, chemical resistance, and wear characteristics need to be considered when selecting bushing materials. Materials such as bronze, steel, PTFE, and UHMW are commonly used in various applications, and the selection of the appropriate material depends on the specific requirements of the application.

PTFE composite bushings conform to ISO 3547:2006 and are ready for installation.Any re-sizing of the bore, i.e. the sliding surface, will reduce the service life of the bushings and should only be done in exceptional cases. If re-sizing is necessary, the bore should be calibrated, using a mandrel/resizing tool . Because various criteria, like material and wall thickness of the housing as well as the deviation of cylindrical form, have to be taken into consideration, Viiplus recommends using a calibrated mandrel to re-size the bore. After resizing, bushing bore expansion tests and application field tests should be undertaken prior to the release of a final product. Guideline values for the requisite interference of the calibrating mandrel as a function of the desired widening of the bushing bore for various bushing bore diameters can be obtained from diagram 1. The diagram is based on tests with bushings of different sizes and valid for bushings mounted in a housing.with an outside diameter DG = 2* bushing outside diameter D . If mandrel expansion tests show that the bore is too wide, the calibrating mandrel should be reground and the tests repeated on new bushings.

Discover our plain bearings: Flange bearings, sleeve bushings, and thrust washers. Customizable bushing materials available. Our products are wear-resistant, maintenance-free, and designed to withstand dirt, dust, and corrosion.

Explore Bearing Technology, Plain Bearings & Bushings, And Discover Tailored Design Tips For Industries Such As Agriculture, Automotive, Food And Beverage, Energy, Construction And Industrial Sectors, Robotics, Supply Chain, And Beyond.

The steel backing and the sintered tin/bronze layer are the primary factors in determiningthe chemical resistance of Viiplus composite plain bearings, as the sliding (covering) layersare resistant to most chemicals. The covering layer is virtually inert because of its PTFEcontent, although at elevated temperatures molten alkali metals and free fluorine will attack it. The acetal resin-covering layer of the POM composite bearing is largely resistant to organic substances. At room temperature the sintered tin/bronze structure has good resistance to sea water, steam, atmospheric influences, salt solutions and sulphuric acid, but not to oxidizing acids or media containing ammonia.All exposed surfaces of the steel backing are electrolytically tin-plated but this provides only limited protection against corrosion in most applications. In cases where the bearings are to be exposed to corrosive media, or where there is a danger of corrosion in the contact between the steel backing and the housing material, the backing can be protected by a nickel, chromium or zinc coating applied electrolytically. Further details can be supplied on request.

Comprehensive Design Manuals Brimming With Self-Lubricating Solutions Tailored To Viiplus’S Diverse Manufacturing Operations Spanning Marine, Material Handling, Metals, Mining, Mineral Processing, And Cement Industries!

Bushings are mechanical components used to reduce friction between two surfaces while also providing support and alignment. There are several types of bushings available, each designed for specific applications. When selecting a bushing material, various factors such as load, temperature, chemical resistance, and wear characteristics need to be considered.

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Overview of Bushing Types & Material: Bushing materials comprise cast or machined metals, stabilized polymers (dry bearing slide layer bushing), metal polymer composite sleeve bushes, and material combinations.Bushing design often considers the application’s load capacity, speed, and environment. Metals like bronze, brass, and steel are favored for their durability and ability to withstand high temperatures and pressures. On the other hand, polymers like PTFE provide excellent low-friction surfaces, ideal for reducing wear and extending lifespan in less rigorous conditions. Metal polymer composite sleeve bushes offer a balance of strength and low friction, making them suitable for a wide range of automotive and industrial applications. These combinations allow engineers to tailor the bushings to specific operational demands, enhancing performance and efficiency. Selecting the right bushing involves evaluating factors such as lubrication needs, potential exposure to corrosive substances, and desired noise reduction. Each material and type presents unique advantages, guiding optimal decisions for varied engineering challenges.

Self-Lubricating Bearings and Custom Metal Parts Made to Order. Upload your design files to instantly view pricing and lead times. Viiplus is your all-in-one solution for custom manufacturing.

Global Industrial: Catering to a varied end-market mix with an expanding portfolio of self-lubricating bearing products.

The PTFE-based sliding surface permits smooth, low-friction operation without lubrication. During a short running-in phase, there will be some transfer of PTFE material from the sliding contact surface to the counterface. After this transfer, the characteristic low friction and wear properties of these bearings will be achieved.

The choice of material will depend on the specific application and requirements of the bushing. Consulting with a materials expert or supplier can help ensure the right material is chosen for the job.

* Flange Bushing Depending on operating conditions, Metal-Polymer Hydrodynamic Composite Bearings, Metal-Polymer Self-lubricating Bearing Solutions …RED and the expected life and performance. Dimensional Stability.

The presence, or continuous supply of oil or other non-corrosive fluids may be advantageous and improve the performance of these bearings.