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Gantry crane slewing bearings how to replace
Gantry crane slewing bearings how to replace
2014-07-06 by seoerccy
If you mention this portal crane slewing bearing is used in a large three-row roller bearings, replace many aspects to note, first you have to know the upper slewing bearing overall center of gravity must be changed before the boom replaced by tilt angle or decrease counterweight to keep the center of gravity in the center of the range of slewing bearings; choose windless good weather; choose at least four more jack sufficient tonnage; choose a smooth bearing more propped up on the machine, under strong point; unified command password, ensuring that all synchronous lifting jacks; take the necessary security measures to prevent the crane lifting the upper course of the tilt instability

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