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- W2375341925 abstract "This article mainly introduces technical program,technical data,structure feature,and main parameters of JC-90D drawworks.It is the first time to use three sets of main electric motor to drive drawworks,and equip auto drilling unit with small AC variable frequency motor on DC drawworks,and first time to apply hydraulic disc brake on sand drum.This drawworks shall be widely used on lifting equipment for on-shore as well as off-shore drilling rigs with matured technology,simple electric drive,high efficient for drilling,low dynamic,high hook speed and high ratio between feature and price." @default.
- W2375341925 created "2016-06-24" @default.
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- W2375341925 date "2008-01-01" @default.
- W2375341925 modified "2023-09-25" @default.
- W2375341925 title "Design and Analysis of JC-90D Drawworks" @default.
- W2375341925 hasPublicationYear "2008" @default.
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