Threaded roller planetary bearing

Abstract

The invention provides a threaded roller planetary bearing. The threaded roller planetary bearing comprises a bearing inner ring, a bearing outer ring, a plurality of rollers and two planet carriers,wherein the screw pitch of the threads on the rollers is the same as that of the threads on the outer wall of the bearing inner ring and the inner wall of the bearing outer ring so as to realize engagement; the bearing inner ring is embedded into the bearing outer ring, the two planet carriers are respectively located on both ends of an annular space formed by embedding of the bearing inner ring and the bearing outer ring, and optical axis steps on both ends of the rollers are inserted into optical holes of the planet carriers, so that the plurality of rollers which are parallel to each otherrotate in the annular space. Compared with a conventional bearing of the same size, the load of the threaded roller planetary bearing is more than three times that of the conventional bearing, the maximum rotating speed is more than two times that of the conventional bearing, the service life is greatly prolonged, and the reliability is greatly increased. Therefore, the threaded roller planetary bearing has the advantages of small size, light weight, long service life, high rotating speed, high axial load carrying capacity and high radial load carrying capacity.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a threaded roller planetary bearing. Background technique [0002] Currently commonly used bearings are ball bearings, cylindrical roller bearings, tapered roller bearings or needle roller bearings, which can only bear unidirectional loads and have low limit speeds. The threaded roller planetary bearing provided by the invention can not only bear large radial load, but also can bear large axial load, and can also bear radial load and axial load at the same time. Compared with the original bearing, its dynamic load , limit speed have been greatly improved, greatly improving life and reliability. Contents of the invention [0003] The invention provides a threaded roller planetary bearing, which is used in application scenarios that need to carry large loads, bear radial loads and axial loads at the same time, or high-speed applications. Compared with traditional bearings, the ...

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Problems solved by technology

[0002] Currently commonly used bearings are ball bearings, cylindrical roller bearings, tapered rol

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