What is the cause of the abnormal noise of the extruder?


Ningbo Fangli Technology Co., Ltd. is a mechanical equipment manufacturer with nearly 30 years’ experiences of plastic pipe extrusion equipment, new environmental protection and new materials equipment. Since its establishment Fangli has been developed based on user’s demands. Through continuous improvement, independent R&D on the core technology and digestion & absorption of advanced technology and other means, we have developed PVC pipe extrusion line, PP-R pipe extrusion line, PE water supply / gas pipe extrusion line, which was recommended by the Chinese Ministry of Construction to replace imported products. We have gained the title of “First-class Brand in Zhejiang Province”.



In the current society, the extruder is an important equipment for plastic molding and granulation. The normal use of the extruder can give full play to the efficiency of the machine and maintain a good working condition. It must be maintained unremittingly and carefully to prolong the service life of the machine.


In order to avoid failure, in addition to daily maintenance, service and overhaul in strict accordance with requirements, it is also necessary to know these:


Abnormal noise:


1If it happens in the reducer, it may be caused by bearing damage or poor lubrication, or by gear wear, improper installation or poor engagement. It can be solved by changing bearings, improving lubrication, changing gears or adjusting gear meshing conditions.


2If the noise is a sharp scraping sound, the possibility of scraping between the shaft head and the transmission shaft sleeve due to the deflection of the barrel position shall be considered. It can be solved by adjusting the barrel.


3、If the barrel makes noise, it may be that the screw is bent to sweep the bore or the set temperature is too low, resulting in excessive friction of solid particles. It can be handled by straightening the screw or increasing the set temperature.


If you need more information, Ningbo Fangli Technology Co., Ltd. welcomes you to contact for a detailed inquiry, we will provide you with professional technical guidance or equipment procurement suggestions.

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