... cam slot to a full extent,increasing the pressure pulverization oil pump,thus extends the operation life of the spare parts.3 ... one set mould,one set water tank,one set vacuum pump,one set dust collector.3).Packing size:1.05m*1 ... the host computer,motor,graduator,vaccum pump,linear bearing,transducer;lubricates the key parts without oil,so that prolong the usage life ...