回转支承轴承有无齿式，外齿式和内齿式的四点接触球轴承、双排角接触式球轴

Have toothed slewing rings, and the external-tooth gear type four-point contact ball bearings, double row angular contact ball bearings Cross cylindrical roller bearings, tapered roller bearings and cross three-row cylindrical roller bearing has four series, four point contact ball bearing having a high static load capacity, cross-cylindrical roller having a high dynamic load capacity, cross tapered roller bearings preloaded bearings can have greater support rigidity and rotation accuracy, Tri-row cylindrical roller bearings due to increased load bearing capacity of the lead height, the forces are absorbed by the different track, the same force conditions, which can greatly reduce the diameter of the bearing, and therefore there is more compact so that the host is characterized by a rotary support bearing a high load capacity.

Swing support bearing has tooth type, outer tooth type and inner tooth type four-point contact ball bearing, double-row angle contact ball bearing cross cylindrical roller bearing, cross-cone roller bearing and three row cylindrical roller composite bearing four series, of which four-point contact ball bearing has a high static load capacity, cross-tooth roller has a higher dynamic load capacity, The pre-over-profit of the cross-cone roller bearing can make the bearing have a larger support rigidity and swing accuracy, the three-row cylindrical roller combination bearing leads to bearing height due to the increase of carrying capacity, the various forces are borne by different raceways, so under the same force conditions, the bearing diameter can be greatly reduced, Thus there is a more compact host characterized by a high carrying capacity of the swing support bearing.

There are four series of slewing bearing, namely, four point contact ball bearing, double row angular contact ball bearing cross cylindrical roller bearing, cross tapered roller bearing and three row cylindrical roller composite bearing. Four point contact ball bearing has higher static load capacity, cross cylindrical roller has higher dynamic load capacity, and cross tapered roller bearing pre load capacity The interference can make the bearing have greater support rigidity and rotation accuracy. Due to the improvement of bearing capacity, the three row cylindrical roller composite bearing is oriented to the bearing height, and various forces are respectively borne by different raceways. Therefore, under the same stress, the bearing diameter can be greatly reduced, which makes the main engine more compact. It is a kind of high bearing capacity slewing bearing.<br>