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When and how to change oil for lab twin screw extruder?

For Hartek Lab twin screw extruder, There are two parts need oil: the Gearbox and the Vacuum pump. 

When it need to change the oil? and how to change the oil? please check details as below:

lab twin screw extruder oil


lab twin screw extruder-2

For more details of Lab extruding equipments pls kindly contact us, email:  ;   whatsapp: +86 13249707502
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