![]() While we have an excellent reputation as a bearing supplier, we also have extensive manufacturing capabilities, allowing us to perform many key machining processes, including milling, turning, grinding, broaching, and more. We’re known as one of the top babbitt bearing suppliers, with a reputation for reliability. For over 40 years, we’ve delivered high-quality, precision-machined parts on time and on budget. It is found that the addition of 9 wt.% SiC exhibited the highest performance with the improvement of ∼43% in hardness, ∼55% in compressive strength and ∼80% in wear resistance over the Sn-Sb-Cu alloy.Krueger Bearings isn’t new to the game. The hardness, compressive strength and wear resistance properties of the Sn-Sb-Cu alloy increased with the increase in SiC composition. The volumetric ratio of SnSb:Sn in the composites was found to increase as the SiC composition increased. The composites comprise uniformly dispersed SiC powders in the Sn-base matrix. The microstructure of the alloy revealed the presence of SnSb and Cu-rich angularly shaped phases randomly dispersed in Sn-rich matrix. PM technique was successfully utilised to produce fully dense Babbit alloy and composites with porosity ranging between 1.3% and 6.7%. The results were analysed and compared with that of the Sn-Sb-Cu alloy. The microstructure, mechanical and tribological properties of the composites were investigated using optical microscopy, scanning electron microscopy (equipped with energy dispersive spectrometer), X-ray diffraction machine, Vickers hardness tester, Instron Universal testing machine and pin-on-disk tribometer. In this work, Sn-Sb-Cu composites reinforced with 3, 6 and 9 wt.% of SiC were fabricated via powder metallurgy (PM) technique. However, the load bearing capacity of Sn-Sb-Cu alloy is limited in high speed and heavy load engines. Sn base Babbit (Sn-Sb-Cu) has become a material of choice for making sliding bearings and liners because of the anti-friction and excellent embedability properties of Sn while the intermetallics (SnSb, Cu 6Sn 5) act as the load bearers. ![]()
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