Sprocket wheel 链轮
Use 1 key and 2 jackscrew(2nd 120 degree from 1st tightening the key) / possible also to add one ring at shaft end
Nylon guiding plate尼龙导板
Add 45 degree,5 mm gap between two guiding plate + fix only at 1 point and 1 point free
Roller and brush sealing
Improve sealing machining + use deflector on shaft and flatness of frame
急求这几句话的翻译！！谢谢！！
