Can New Crankshaft and New Bearings Be Installed Directly?
1 Answers
New crankshaft and new bearings cannot be installed directly. Here are the details: 1. Introduction: The crankshaft is the most important component in an engine. It bears the force transmitted by the connecting rod and converts it into torque, which is then output through the crankshaft to drive other engine accessories. The crankshaft is subjected to centrifugal forces from rotating masses, periodically varying gas inertial forces, and reciprocating inertial forces, causing it to endure bending and torsional loads. Therefore, the crankshaft must have sufficient strength and stiffness, with wear-resistant journal surfaces, uniform operation, and good balance. 2. Casting Technology: Melting: Obtaining high-temperature, low-sulfur pure molten iron is key to producing high-quality ductile iron. Molding: Airflow impact molding is significantly superior to clay sand molding, enabling high-precision crankshaft castings. The sand molds produced by this process feature no rebound deformation, which is particularly important for multi-throw crankshafts. Electroslag Melting: Electroslag remelting technology applied to crankshaft production allows cast crankshafts to potentially match the performance of forged ones. It also offers advantages such as fast R&D cycles, high metal utilization, simple equipment, and superior product performance.
