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Advantages of the internal & external slewing bearings?

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What materials used for the slewing bearing of the crane is the best?
May 27, 2019
FLAW DURING BLACK OXIDE
May 30, 2019
Published by admin at May 27, 2019
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The teeth of slewing ring are directly machining on the inner or outer ring, and are usually machined by a gear-hobbing machine or a gear shaping machine. If the loading is heavy, the stress is high, then teeth quenching is required. What are the advantages of slewing bearings?

The advantages of the internal gear slewing bearing: the gear and the slewing bearing do not need to be equipped with a safety cover, the gear has good dust resistance, long time working with grease, and the transmission contact stress of the internal tooth meshing Lower, wear resisting and long service life.

Advantages of external gear slewing bearing: External tooth processing is convenient, and utilized the utmost space. Fault detective and gear meshing inspection are easy. Because the P.C.D is large, it can better obtain larger. The gear ratio greatly reduces the circumferential force and torque on the pinion.

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