Four Contact Ball Slewing Bearings without ToothDelivery term:The date of payment from buyers deliver within days
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The LTZC four point contact ball slewing bearing inner ring, outer ring have integral and split structure. The rigidity of the integral rings is relatively good in holding its rigidity. The split structure is fastened by bolts, this facilitates for a more convenient adjustment process. Normally the LTZC four point contact ball slewing bearing have cages (or spacing blocks). The full ball type has a larger load carrying capacity. In some situations this type would be selected for heavy loading applications. However, this design has a high frictional resistance, this could cause nicks on ball surface.
This contact ball design slewing bearing is suitable for tilting moment and small frictional resistance applications. The contact mounting surface must have adequate radial rigidity.
Considerations in the design selection process
The determination of the boundary dimensions (inner diameter, outer diameter, height etc) must be able to guarantee the max load capacity (in addition to a safety factor), service life. Estimation of load capacity and service life should be obtained through factual and theoretical data calculations and application experiences etc. Safety requirement is shown in Table 3.3
In general when the load capacity, service life and safety margins are identified then the boundary dimension of SR bearing is relatively smaller compared with that of a ball bearing.
When main unit is limited to the horizontal orientation (radial direction of bearing), then the dimension of vertical orientation (axial direction of bearing) can be adjusted accordingly.
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