The effect of slewing bearing used in mechanical equipment

2019-07-15

The role of slewing bearing (slewing ring) in mechanical equipment

Its function is to connect the upper and lower parts of the machine together, and at the same time support the weight of the upper part and the load generated when the machine is working, and make the upper part of the machine rotate relative to the lower part (or the lower part relative to work).

Slewing bearings (slewing bearings) have unique load-bearing characteristics and are generally used in hoisting machinery, excavators, turrets, wind generators, telescopes, tank turrets and other equipment. Through the improvement of processing methods and the update of design concepts, today's slewing bearings can be used in smaller, more messy and more refined occasions.

In the machine tool industry, the standard structure of the slewing bearing (slewing ring) uses a high-precision grade to apply preload together to eliminate voids and reduce vibration. The radial runout and diameter tolerance of the slewing ring bearing (slewing ring) range from one thousandth to one ten thousandth of an inch (2.54 tan). The structure is compact, the cross-sectional dimension is small, and the diameter can be as small as 50 mm (this type of turntable The steel ball size of the bearing (slewing ring) is smaller than that of the traditionally used heavy series slewing ring). This prompted designers to begin to reconsider traditional slewing bearing equipment.

Boom column bearings used to accept radial, axial and moment loads. The equipment is equipped with two sets of ball or roller slewing bearings arranged at intervals along the shaft. This form of equipment is through the use of two sets of slewing bearings on the shaft for a longer distance Set to obtain higher moment load capacity. However, for such equipment, it is difficult to adapt to new use occasions due to space constraints and the messy nature of the equipment, and this is the advantage of the slewing bearing. Replacing two sets of slewing bearings with one set of slewing bearings can not only reduce the height of the equipment, but also simplify the structure of the components. Therefore, the slewing bearings are particularly suitable for new control equipment in industrial automation.