Bushing SBA: page 5
For articulation points exposed to repeated shocks, SBA bronze bushings offer a good balance between strength and friction reduction.
The alloy used in SBA bushings contains elements that increase the material’s fatigue strength, an important factor for joints subjected to repeated loading and unloading cycles, not just constant loads. This additional fatigue resistance extends the service life compared to standard bronze, particularly in construction equipment that experiences frequent impact — such as hydraulic hammers, excavator arms, or loading buckets.
What are SBA bushings and where are they used?
SBA bushings are fitted in the moving joints of heavy machinery, where the pin or shaft rotates or oscillates under constant load. Their role is identical to that of other bronze bushings — providing guidance and reducing wear — but the alloy used is designed to withstand harsher conditions than a standard bushing.
The resistance of SBA alloys to impact and heavy loads
The composition of the alloy from which SBA bushings are manufactured gives them good tolerance to impact loads, without failing rapidly under repeated vibrations. This makes them suitable for construction equipment and industrial machinery subjected to constant, rather than just occasional, mechanical stresses.
The advantages of SBA bushings for reducing friction and wear
Like other bronze bushings, SBA bushings reduce direct friction between moving metal components, extending the service life of the joint. For similar applications, BK-1 and BK-2 bushings offer additional strength options, while HRC2 bushings are a suitable choice for collar-mounted installations. To seal the shaft in the same area, the range of oil seals often completes the repair.
Why buy SBA bushings from the Hydraulic Seals Store
At the Hydraulic Seals Store, SBA bushings are available in standard sizes, with specifications clearly displayed for each product. Up-to-date stock levels and fast delivery minimize machine downtime.
The full dimensions of SBA bushings are shown for each product in the catalogue, and up-to-date stock availability allows for quick ordering, including for larger quantities required for complete overhauls of construction machinery joints.