With the main blade liftingscrew, nut structure, stable and reliable.
主锯片升降采用螺杆，螺母结构，平稳可靠。
2
The upper end and the lower end of a liftingscrew are in a double-self-aligning hanging structure with a self-aligning roller step bearing so that the stress state of the liftingscrew is improved.
提升螺杆上、下端采用调心滚柱止推轴承双调心吊挂结构改善提升螺杆受力状态。
3
Departments should pay attention to before installing the screw force is balanced, lifting (activity) it is flexible.