3945917 3802210 3945929 3945930 | CUMMINS MAIN BEARING
The Main Bearing (Part Number: 3945930) is an essential component of an internal combustion engine, supporting the crankshaft and ensuring smooth rotation. Typically made of high-strength steel or aluminum alloy, it is designed to withstand heavy loads and high temperatures. Located in the engine block, the main bearing consists of two halves that encircle the crankshaft journals. These halves feature a thin layer of soft metal, such as lead or tin, providing a low-friction surface for the crankshaft to rotate on. Over time, main bearings can wear down due to friction and heat, potentially causing excessive vibration or even engine failure. Regular maintenance, including oil changes and inspections, can help prevent these issues.
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3945917 3802210 3945929 3945930 CUMMINS MAIN BEARING
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