On a more general level, bronze bushings are desirable for their durability and resistance properties. However, there are significant differences between the oil-impregnated and cast bronze bushings. In many ways, the component types are manufactured, which use different processes. As a result, it lends itself to different physical characteristics.
The bearing manufacturers made oil-impregnated bronze bushings by the metal powder process. In contrast, the variety of cast is produced through more traditional machining methods. So, understanding this detail which affects the final product. It is also important as one type which may be more appropriate for your applications.
Oil-impregnated bronze bushings
Oil-impregnated bronze bushings are characterized as per their ability to self-lubricate. It is possibly effective cause the powder metallurgy process is:
Bronze powder is gravity-filled into a die set, which is desired the size of bushing. The powder is also pressed to connect the particles of powder.
The powder particles in part bonded together in a furnace. The furnace temperature is a bit high enough to bond the particles without melting the metal.
The sintering procedure is crucial for bronze bushing lubrication. Sintering by energy decreases the porosity of the output, and it bonds the powder particles together. However, it is also possible to control the degree to which this happens.
For oil-impregnated bronze bushings, the last porosity is controlled around 25percent; tiny, interconnected capillaries are woven through the materials.
The bushing is also pressed through calibration set tools. It requires tolerance to finish the manufacturing process. Finally, the bushing is vacuum impregnated, which forces the oil and interconnect to porosity.
Benefits and applications
The powder was developed as a cost-effective alternative to standard machines and remained a convenient option. In some cases, the efficient high-volume production methods translate into cost savings on the customer end. In addition, oil impregnation eliminates the requirement for lubricants and frequent maintenance.
Oil-impregnated metal bushings originate as an automotive component. However, they are used in many other industries. Generally, the oil bronze bushings are the best and suitable for low, moderate loads. But they also tolerate high-velocity loads, which are better than the alternatives. In addition, the functions are well across the wide temperature range, which is approximately 10–220°F suitable. Or you can use it for outdoor and industrial environments.
Cast bronze bushings
Unlike oil-impregnated bushings, the cast bronze bushings are not formed from powder. Instead, they are created from the solid or hollow-cast that undergoes machining processes to achieve a final shape.
First, bronze is continuous or centrifugally cast in a solid bar.
Most modern manufacturers use a CNC machine to cut the cast bar to final the size. Although, you may use other machine techniques to finish and form the bushing.
Benefits and applications
Cast bronze bushings don't begin as particles, so maintain a finer grain structure and a higher strength. As a result, the bronze sleeve bearings and bushings are more vital, durable, and reliable under the compressive force.
This combination of properties makes the bushings ideal for applications that involve heavier loads. The sintered bronze bushing of comparable size would be simply unable to withstand the same forces of the cast one.
The selection of bearing bronze bushings
The decision between cast and oil-impregnated bronze bushings, the bearing is ready to fulfill your order with quality components. In addition, the extensive catalog of both plain and flanged bushing designs is made from cast bronze.
However, oil-impregnated options are also available in an incomparable range of designs. All the standards for chemical properties, physical properties, and tolerances.
A bearing manufacturing company also tries to earn a reputation as trustworthy. Which provides for the stock and custom components. As one of the largest providers of bearing in the nation, we decide to offer the exact parts which you need at the right price,