CAD of kinetic analysis for the upper carriage of the slewing mechanism of a hydraulic excavator driven by variable displacement pumps;

If the lower support bearing of the slewing mechanism in M10-25 portal crane occurs failue, the protal crane occurs vibration, unusual sound and strenuous rotation during slewing.

This paper introduces the working principle of the slewing gear of 1900/200t stationary slewing crane, and briefly analyzes its structural layout and features and the uses.

Rotating reducer is an important part of blasthole, it holds biggest loads while drilling.

The main structure and the rotating mechanism of autorotation container were introduced.

The application of the double gyration device on LAMOST fiber positioning unit is introduced.

Conjugate cam profile curve design of stopping and slewing mechanism of silk screen printing press tumbling cylinder