In the design of special rotary table for NC vertical turning, bearing selection is more important. At present, TIMKEN series cross tapered roller bearings are selected for domestic high precision CNC vertical turning machines. This type of bearing can guarantee rotation precision and bearing rigidity under the premise of ensuring rotation precision and bearing rigidity. To achieve a relatively high rotational speed, suitable for the use of CNC vertical car demand, should be widely used, Luoyang Yujie Industry and Trade Co., Ltd. is committed to the R & D and production of such bearings for nearly ten years, Product precision and structural strength to meet the needs of the same kind of foreign products, supporting the supply of several domestic CNC machine tools manufacturers.
This paper introduces the structure of the cross-conical roller bearing to the technical personnel of YOGIE. The main characteristics of this type of bearing are as follows:
1. The cross-arranged conical roller can bear the multi-directional load such as partial load and overcome the overturning moment in the turning state;
2. The nylon spacer is used between the roller and the roller to minimize the friction torque and noise.
3. Bearing inner ring split-body structure, there is a gap between the two inner rings, the bearing can be installed according to the machine tool requirements pre-tight, to maintain normal enough rigidity;
