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Have You Seen The 23.5-meter-long Super-large Crankshaft?

2021-09-28

How big is the largest crankshaft you have ever seen? On a tractor, car or truck? See if this one is big enough


This picture only sees the villain, and does not see the whole picture of the crankshaft, let’s take a look at the picture below


This is the 12S90ME-C crankshaft with a total length of 23 meters and a weight of nearly 460 tons. It is installed in the heart of the world's largest and latest 21000TEU standard container freighter built by China for the first time.

Marine crankshafts have almost strict requirements for accuracy, with more than 700 test parameters. Any error in any process will be an irreversible disaster.

Large-scale crankshaft manufacturing capacity is an important indicator of the level of a country's shipbuilding industry. Fortunately, our manufacturing capacity is still improving.



Just 3 months ago, the W12X92 marine crankshaft manufactured by Shanghai Electric Marine Crankshaft Co., Ltd. officially rolled off the assembly line. The crankshaft adopts a spliced ??structure with a total length of 23.5 meters and a weight of 488 tons, making it one of the heaviest marine crankshafts in the world. one.


The marine crankshaft is a high-power low-speed marine diesel engine crankshaft, which is a super-long and super-heavy product. It adopts segmented (two-segment) splicing processing, which has reached the processing limit of existing equipment. In the manufacturing process, in order to ensure the quality control of the "red sleeve" of the marine crankshaft, the process requirement that the center deviation is less than 2 mm is achieved.