Shah,

Experienced Lube specalist will rarely recommend addition of additives. Lubes are not like food items, that you need to add salt, pepper etc., for taste.

A good high VI oil from Hydrotreated base stocks like Group II type should suffice.

M Hussam Adeni

the machine under question is a 130 ton inj moulding machine from DGP windsor, the oil tank capacity is around 250 litres, we had modified the machine last year, and thrown out all the old parts and converted it to a PLC [ microprocessor controlled ] machine. We added proportional valves, normal fixed output vane [ injection ] pump from yuken, the electric motor is from hindustan motors, the hydromotor is from danfoss, when we were operating the modified machine we goofed up on the oil cooler capacity , and the oil temprature used to rise to around 65 deg and some times used to touch 70 degrees, this went on for around 6 months, at that time we were under pressure to complete a export commitment so we could not stop the machine . after which we changed the oil cooler and put in a new one with larger capacity then the old one, and the oil temprature rise problem was solved permanently , but then due to mistake of our workmen water got ingressed into the oil tank, abt 10 litres got mixed with oil, our production staff tried to evapourate the oil by shutting down the oil cooler and raising the oil temprature, all thought this method was very crude, do you think that longer exposure of oil at higher temprature caused the oil to change its colour, also there were some plastic granules in the oil tank which had ingressed , we have now cleaned the oil tank thoroughly and will prevent future contaminations,

in my earlier message i said my workmen tried to evapourate the oil, it was not evapourate the oil but evapourating water, by shutting down oil cooler, we are cooling the oil using conventional oil cooler, in which there are copper tubes, in which cool water is passed and area outside the pipe is where hot oil flows, and due to conduction oil is cooled.
and when we had shut down the oil cooler to evapourate the water, the oil temprature never crossed 70 degrees, when it touched 70 we used to shut down the machine for a while to let the oil cool down, as machine used to malfunction, becuase of rise in oil temprature i think we faced lot of problems like breakage of rubber o rings, and leakages from different valves etc.

Shah,

Dehydration may not be possible on-line. The fail safe arrangement in the systems would trip.

Better leave it to the professionals. like Dave.

M Hussam Adeni

Shah,

I do recall that DGP Windsor recommended Castrol products during 2000. Please seek old manuals.

M HUssam Adeni

Mr Adeni , Currently our oil contamination problem is solved, i have contacted Mr Dave and i will requistion his services in future , when we have oil filtration requirements, his machine looks pretty advance compared to the people in the field, your advice on using higher visocity oil is noteworthy , i will keep in mind the benefits of using higher viscoity oil and the grades u mentioned,
thank u very much ,
Dhaval

Shah,

Correction please, I have suggested
"higher VI" oil
not
"higher Visscosity" oil.

M H Adeni

thank u for correcting the misconeception Mr Adeni

Permanent installation of some Oil Cleaning System which can maintain oil at NAS 6 and free from moisture is always better than intermittent filtration.Klarol Oil Cleaning System is capable of achieving desired results if it is installed permanently on your IJM, the cost is viable, you may contact me at myminimac@yahoo.com

We are manufacturers located in China.We have technology applicable to lube oil(such as engine oil,hydraulic oil,turbine oil and transformer oil) purification and filtration.

We recently put a Balanced Charge Agglomeration (BCA)system on an injection molding machine hydraulic system which had a micro-filtration bypass filter. The BCA system cleaned the submicron particles very effectively from the oil, over 98% particle removal by gravimetric analysis.

Later filter analysis indicated the BCA system filters were the actual agglomerate removal filters. The bypass filter had little to nothing in agglomerated particles. The data just came in, but I expect we will have a paper on this case study soon. Call or email for more information.