Excavator Slewing Bearing DX340

The slewing bearing is a large-scale bearing, which looks like a plate, so it is called a slewing bearing. The slewing bearing can bear 3 kinds of bearing capacity at the same time, so it is widely used in the machinery industry.

The slewing ring is generally composed of an inner ring, an outer ring and rolling elements. The slewing bearing must rely on the outer ring or the inner ring as a support body when it is working, and then rely on the rolling of the rolling body to achieve rotation. Although the structure of the slewing ring is similar, there are still different models. According to current industry standards, there are five types of combined three-row cylindrical roller slewing bearings, crossed tapered roller bearings, crossed cylindrical roller bearings, four-point contact ball slewing bearings, and double-row angular contact thrust ball slewing bearings.

Therefore, the role of the excavator slewing support is obvious. The slewing support of the excavator realizes the rotation of the device through the action of friction and lubrication, which can drive mechanical propaganda in the excavator and provide supporting capacity.

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Note:
1. n1 is the nos of lubricating holes.Oil cup M10×1JB/T7940.1~JB/T7940.2.The Oil nipple's location can be change according to the user's application.
2. n-φcan change to tapped hole,the diameter of tapped hole is M,depth is 2M.
3. The tangential tooth force in the form is the max tooth force,the nominal tangential tooth force is 1/2 of the max one.
4. "K" is addendum reduction coefficient.